Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations

Abstract Particle-laden gravity currents propagating in stratified environments, such as turbidity currents induced by floods in estuaries or triggered by landslides in oceans, are important and complicated geophysical processes that require multidisciplinary studies. This paper numerically investig...
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Autor*in:	He, Zhiguo [verfasserIn] Zhao, Liang [verfasserIn] Chen, Jingyao [verfasserIn] Yu, Ching-Hao [verfasserIn] Meiburg, Eckart [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	Computational methods Stratification Turbidity current Gravity current

Anmerkung:	© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021

Übergeordnetes Werk:	Enthalten in: Environmental earth sciences - Berlin : Springer, 2009, 80(2021), 21 vom: 26. Okt.
Übergeordnetes Werk:	volume:80 ; year:2021 ; number:21 ; day:26 ; month:10

Links:	Volltext

DOI / URN:	10.1007/s12665-021-10014-z

Katalog-ID:	SPR045405204

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allfields	10.1007/s12665-021-10014-z doi (DE-627)SPR045405204 (SPR)s12665-021-10014-z-e DE-627 ger DE-627 rakwb eng 550 ASE 38.95 bkl He, Zhiguo verfasserin aut Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 Abstract Particle-laden gravity currents propagating in stratified environments, such as turbidity currents induced by floods in estuaries or triggered by landslides in oceans, are important and complicated geophysical processes that require multidisciplinary studies. This paper numerically investigates the dynamic features of lock-release particle-laden gravity currents in linear stratification on a flat bed, with the main focus on the front velocity, entrainment ratio, and energy budget. The direct numerical simulations reveal that the suppressive effect of the ambient stratification on the turbulence may cause a particle-laden current to quickly lose momentum so that the near-constant front velocity of the particle-laden current cannot be maintained if no more particles are resuspended. After the acceleration stage, the entrainment ratio of a particle-laden gravity current barely changes with ambient stratification due to a combined effect from suppressed turbulent structures and deposition of particles. The energy-conversion process is accelerated by particle settling and is suppressed by ambient stratification. Specifically, because of the suppressive effect of a stronger stratification on the turbulence, a larger part of the energy is dissipated by microscopic Stokes flow around particles, while a smaller part of the energy is dissipated by the macroscopic convective motion of the fluids. Computational methods (dpeaa)DE-He213 Stratification (dpeaa)DE-He213 Turbidity current (dpeaa)DE-He213 Gravity current (dpeaa)DE-He213 Zhao, Liang verfasserin aut Chen, Jingyao verfasserin aut Yu, Ching-Hao verfasserin aut Meiburg, Eckart verfasserin aut Enthalten in Environmental earth sciences Berlin : Springer, 2009 80(2021), 21 vom: 26. Okt. (DE-627)599673451 (DE-600)2493699-6 1866-6299 nnns volume:80 year:2021 number:21 day:26 month:10 https://dx.doi.org/10.1007/s12665-021-10014-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.95 ASE AR 80 2021 21 26 10
spelling	10.1007/s12665-021-10014-z doi (DE-627)SPR045405204 (SPR)s12665-021-10014-z-e DE-627 ger DE-627 rakwb eng 550 ASE 38.95 bkl He, Zhiguo verfasserin aut Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 Abstract Particle-laden gravity currents propagating in stratified environments, such as turbidity currents induced by floods in estuaries or triggered by landslides in oceans, are important and complicated geophysical processes that require multidisciplinary studies. This paper numerically investigates the dynamic features of lock-release particle-laden gravity currents in linear stratification on a flat bed, with the main focus on the front velocity, entrainment ratio, and energy budget. The direct numerical simulations reveal that the suppressive effect of the ambient stratification on the turbulence may cause a particle-laden current to quickly lose momentum so that the near-constant front velocity of the particle-laden current cannot be maintained if no more particles are resuspended. After the acceleration stage, the entrainment ratio of a particle-laden gravity current barely changes with ambient stratification due to a combined effect from suppressed turbulent structures and deposition of particles. The energy-conversion process is accelerated by particle settling and is suppressed by ambient stratification. Specifically, because of the suppressive effect of a stronger stratification on the turbulence, a larger part of the energy is dissipated by microscopic Stokes flow around particles, while a smaller part of the energy is dissipated by the macroscopic convective motion of the fluids. Computational methods (dpeaa)DE-He213 Stratification (dpeaa)DE-He213 Turbidity current (dpeaa)DE-He213 Gravity current (dpeaa)DE-He213 Zhao, Liang verfasserin aut Chen, Jingyao verfasserin aut Yu, Ching-Hao verfasserin aut Meiburg, Eckart verfasserin aut Enthalten in Environmental earth sciences Berlin : Springer, 2009 80(2021), 21 vom: 26. Okt. (DE-627)599673451 (DE-600)2493699-6 1866-6299 nnns volume:80 year:2021 number:21 day:26 month:10 https://dx.doi.org/10.1007/s12665-021-10014-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.95 ASE AR 80 2021 21 26 10
allfields_unstemmed	10.1007/s12665-021-10014-z doi (DE-627)SPR045405204 (SPR)s12665-021-10014-z-e DE-627 ger DE-627 rakwb eng 550 ASE 38.95 bkl He, Zhiguo verfasserin aut Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 Abstract Particle-laden gravity currents propagating in stratified environments, such as turbidity currents induced by floods in estuaries or triggered by landslides in oceans, are important and complicated geophysical processes that require multidisciplinary studies. This paper numerically investigates the dynamic features of lock-release particle-laden gravity currents in linear stratification on a flat bed, with the main focus on the front velocity, entrainment ratio, and energy budget. The direct numerical simulations reveal that the suppressive effect of the ambient stratification on the turbulence may cause a particle-laden current to quickly lose momentum so that the near-constant front velocity of the particle-laden current cannot be maintained if no more particles are resuspended. After the acceleration stage, the entrainment ratio of a particle-laden gravity current barely changes with ambient stratification due to a combined effect from suppressed turbulent structures and deposition of particles. The energy-conversion process is accelerated by particle settling and is suppressed by ambient stratification. Specifically, because of the suppressive effect of a stronger stratification on the turbulence, a larger part of the energy is dissipated by microscopic Stokes flow around particles, while a smaller part of the energy is dissipated by the macroscopic convective motion of the fluids. Computational methods (dpeaa)DE-He213 Stratification (dpeaa)DE-He213 Turbidity current (dpeaa)DE-He213 Gravity current (dpeaa)DE-He213 Zhao, Liang verfasserin aut Chen, Jingyao verfasserin aut Yu, Ching-Hao verfasserin aut Meiburg, Eckart verfasserin aut Enthalten in Environmental earth sciences Berlin : Springer, 2009 80(2021), 21 vom: 26. Okt. (DE-627)599673451 (DE-600)2493699-6 1866-6299 nnns volume:80 year:2021 number:21 day:26 month:10 https://dx.doi.org/10.1007/s12665-021-10014-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.95 ASE AR 80 2021 21 26 10
allfieldsGer	10.1007/s12665-021-10014-z doi (DE-627)SPR045405204 (SPR)s12665-021-10014-z-e DE-627 ger DE-627 rakwb eng 550 ASE 38.95 bkl He, Zhiguo verfasserin aut Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 Abstract Particle-laden gravity currents propagating in stratified environments, such as turbidity currents induced by floods in estuaries or triggered by landslides in oceans, are important and complicated geophysical processes that require multidisciplinary studies. This paper numerically investigates the dynamic features of lock-release particle-laden gravity currents in linear stratification on a flat bed, with the main focus on the front velocity, entrainment ratio, and energy budget. The direct numerical simulations reveal that the suppressive effect of the ambient stratification on the turbulence may cause a particle-laden current to quickly lose momentum so that the near-constant front velocity of the particle-laden current cannot be maintained if no more particles are resuspended. After the acceleration stage, the entrainment ratio of a particle-laden gravity current barely changes with ambient stratification due to a combined effect from suppressed turbulent structures and deposition of particles. The energy-conversion process is accelerated by particle settling and is suppressed by ambient stratification. Specifically, because of the suppressive effect of a stronger stratification on the turbulence, a larger part of the energy is dissipated by microscopic Stokes flow around particles, while a smaller part of the energy is dissipated by the macroscopic convective motion of the fluids. Computational methods (dpeaa)DE-He213 Stratification (dpeaa)DE-He213 Turbidity current (dpeaa)DE-He213 Gravity current (dpeaa)DE-He213 Zhao, Liang verfasserin aut Chen, Jingyao verfasserin aut Yu, Ching-Hao verfasserin aut Meiburg, Eckart verfasserin aut Enthalten in Environmental earth sciences Berlin : Springer, 2009 80(2021), 21 vom: 26. Okt. (DE-627)599673451 (DE-600)2493699-6 1866-6299 nnns volume:80 year:2021 number:21 day:26 month:10 https://dx.doi.org/10.1007/s12665-021-10014-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.95 ASE AR 80 2021 21 26 10
allfieldsSound	10.1007/s12665-021-10014-z doi (DE-627)SPR045405204 (SPR)s12665-021-10014-z-e DE-627 ger DE-627 rakwb eng 550 ASE 38.95 bkl He, Zhiguo verfasserin aut Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 Abstract Particle-laden gravity currents propagating in stratified environments, such as turbidity currents induced by floods in estuaries or triggered by landslides in oceans, are important and complicated geophysical processes that require multidisciplinary studies. This paper numerically investigates the dynamic features of lock-release particle-laden gravity currents in linear stratification on a flat bed, with the main focus on the front velocity, entrainment ratio, and energy budget. The direct numerical simulations reveal that the suppressive effect of the ambient stratification on the turbulence may cause a particle-laden current to quickly lose momentum so that the near-constant front velocity of the particle-laden current cannot be maintained if no more particles are resuspended. After the acceleration stage, the entrainment ratio of a particle-laden gravity current barely changes with ambient stratification due to a combined effect from suppressed turbulent structures and deposition of particles. The energy-conversion process is accelerated by particle settling and is suppressed by ambient stratification. Specifically, because of the suppressive effect of a stronger stratification on the turbulence, a larger part of the energy is dissipated by microscopic Stokes flow around particles, while a smaller part of the energy is dissipated by the macroscopic convective motion of the fluids. Computational methods (dpeaa)DE-He213 Stratification (dpeaa)DE-He213 Turbidity current (dpeaa)DE-He213 Gravity current (dpeaa)DE-He213 Zhao, Liang verfasserin aut Chen, Jingyao verfasserin aut Yu, Ching-Hao verfasserin aut Meiburg, Eckart verfasserin aut Enthalten in Environmental earth sciences Berlin : Springer, 2009 80(2021), 21 vom: 26. Okt. (DE-627)599673451 (DE-600)2493699-6 1866-6299 nnns volume:80 year:2021 number:21 day:26 month:10 https://dx.doi.org/10.1007/s12665-021-10014-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.95 ASE AR 80 2021 21 26 10
language	English
source	Enthalten in Environmental earth sciences 80(2021), 21 vom: 26. Okt. volume:80 year:2021 number:21 day:26 month:10
sourceStr	Enthalten in Environmental earth sciences 80(2021), 21 vom: 26. Okt. volume:80 year:2021 number:21 day:26 month:10
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Computational methods Stratification Turbidity current Gravity current
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container_title	Environmental earth sciences
authorswithroles_txt_mv	He, Zhiguo @@aut@@ Zhao, Liang @@aut@@ Chen, Jingyao @@aut@@ Yu, Ching-Hao @@aut@@ Meiburg, Eckart @@aut@@
publishDateDaySort_date	2021-10-26T00:00:00Z
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author	He, Zhiguo
spellingShingle	He, Zhiguo ddc 550 bkl 38.95 misc Computational methods misc Stratification misc Turbidity current misc Gravity current Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations
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topic_title	550 ASE 38.95 bkl Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations Computational methods (dpeaa)DE-He213 Stratification (dpeaa)DE-He213 Turbidity current (dpeaa)DE-He213 Gravity current (dpeaa)DE-He213
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title	Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations
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title_full	Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations
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title_sort	particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations
title_auth	Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations
abstract	Abstract Particle-laden gravity currents propagating in stratified environments, such as turbidity currents induced by floods in estuaries or triggered by landslides in oceans, are important and complicated geophysical processes that require multidisciplinary studies. This paper numerically investigates the dynamic features of lock-release particle-laden gravity currents in linear stratification on a flat bed, with the main focus on the front velocity, entrainment ratio, and energy budget. The direct numerical simulations reveal that the suppressive effect of the ambient stratification on the turbulence may cause a particle-laden current to quickly lose momentum so that the near-constant front velocity of the particle-laden current cannot be maintained if no more particles are resuspended. After the acceleration stage, the entrainment ratio of a particle-laden gravity current barely changes with ambient stratification due to a combined effect from suppressed turbulent structures and deposition of particles. The energy-conversion process is accelerated by particle settling and is suppressed by ambient stratification. Specifically, because of the suppressive effect of a stronger stratification on the turbulence, a larger part of the energy is dissipated by microscopic Stokes flow around particles, while a smaller part of the energy is dissipated by the macroscopic convective motion of the fluids. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021
abstractGer	Abstract Particle-laden gravity currents propagating in stratified environments, such as turbidity currents induced by floods in estuaries or triggered by landslides in oceans, are important and complicated geophysical processes that require multidisciplinary studies. This paper numerically investigates the dynamic features of lock-release particle-laden gravity currents in linear stratification on a flat bed, with the main focus on the front velocity, entrainment ratio, and energy budget. The direct numerical simulations reveal that the suppressive effect of the ambient stratification on the turbulence may cause a particle-laden current to quickly lose momentum so that the near-constant front velocity of the particle-laden current cannot be maintained if no more particles are resuspended. After the acceleration stage, the entrainment ratio of a particle-laden gravity current barely changes with ambient stratification due to a combined effect from suppressed turbulent structures and deposition of particles. The energy-conversion process is accelerated by particle settling and is suppressed by ambient stratification. Specifically, because of the suppressive effect of a stronger stratification on the turbulence, a larger part of the energy is dissipated by microscopic Stokes flow around particles, while a smaller part of the energy is dissipated by the macroscopic convective motion of the fluids. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021
abstract_unstemmed	Abstract Particle-laden gravity currents propagating in stratified environments, such as turbidity currents induced by floods in estuaries or triggered by landslides in oceans, are important and complicated geophysical processes that require multidisciplinary studies. This paper numerically investigates the dynamic features of lock-release particle-laden gravity currents in linear stratification on a flat bed, with the main focus on the front velocity, entrainment ratio, and energy budget. The direct numerical simulations reveal that the suppressive effect of the ambient stratification on the turbulence may cause a particle-laden current to quickly lose momentum so that the near-constant front velocity of the particle-laden current cannot be maintained if no more particles are resuspended. After the acceleration stage, the entrainment ratio of a particle-laden gravity current barely changes with ambient stratification due to a combined effect from suppressed turbulent structures and deposition of particles. The energy-conversion process is accelerated by particle settling and is suppressed by ambient stratification. Specifically, because of the suppressive effect of a stronger stratification on the turbulence, a larger part of the energy is dissipated by microscopic Stokes flow around particles, while a smaller part of the energy is dissipated by the macroscopic convective motion of the fluids. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021
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container_issue	21
title_short	Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations
url	https://dx.doi.org/10.1007/s12665-021-10014-z
remote_bool	true
author2	Zhao, Liang Chen, Jingyao Yu, Ching-Hao Meiburg, Eckart
author2Str	Zhao, Liang Chen, Jingyao Yu, Ching-Hao Meiburg, Eckart
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doi_str	10.1007/s12665-021-10014-z
up_date	2024-07-03T15:46:55.899Z
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Particle-laden gravity currents interacting with stratified ambient water using direct numerical simulations

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