Near-limit detonations of methane–oxygen mixtures in long narrow tubes
Abstract The near-limit gaseous detonation behavior of three different methane–oxygen mixtures was investigated. Experiments were performed in transparent tubes of three different inner diameters (d). Due to the relatively large tube length l ($$\frac{l}{d} > 2500$$ except $$\frac{l}{d} > 1000...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Cao, W. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag GmbH Germany, part of Springer Nature 2020 |
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| Übergeordnetes Werk: |
Enthalten in: Shock waves - Springer Berlin Heidelberg, 1991, 30(2020), 7-8 vom: 28. Feb., Seite 713-719 |
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| Übergeordnetes Werk: |
volume:30 ; year:2020 ; number:7-8 ; day:28 ; month:02 ; pages:713-719 |
| Links: |
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| DOI / URN: |
10.1007/s00193-020-00940-5 |
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| Katalog-ID: |
OLC2123448990 |
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| 520 | |a Abstract The near-limit gaseous detonation behavior of three different methane–oxygen mixtures was investigated. Experiments were performed in transparent tubes of three different inner diameters (d). Due to the relatively large tube length l ($$\frac{l}{d} > 2500$$ except $$\frac{l}{d} > 1000$$ for the largest diameter), the tube was arranged in a spiral configuration for the convenience of testing. Photodiodes were spaced at uniform intervals along the tube to provide a high-resolution velocity measurement, such that up to eight cycles of the galloping mode were registered. From the velocity histogram and the probability distribution function, a bimodal behavior was observed in all galloping regimes for different unstable mixtures, with dominant modes near 70% of the Chapman–Jouguet detonation velocity ($$0.7D_{\mathrm{CJ}}$$) and $$D_{\mathrm{CJ}}$$. With decreasing pressure, the lower-velocity mode became more prevalent until the failure of detonation. The range of initial pressures, within which galloping detonations were observed, decreased rapidly with increasing tube diameter and with increasing mixture stability. These results suggest that both the instability and the boundary effect influence the existence of galloping detonations. The normalized wavelength of the galloping cycle ($$\frac{L}{d}$$) was in the range of 200–450 for the three different mixture compositions and exhibited a general trend that the wavelength increased with decreasing initial pressure. | ||
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10.1007/s00193-020-00940-5 doi (DE-627)OLC2123448990 (DE-He213)s00193-020-00940-5-p DE-627 ger DE-627 rakwb eng 530 VZ Cao, W. verfasserin (orcid)0000-0003-0135-4209 aut Near-limit detonations of methane–oxygen mixtures in long narrow tubes 2020 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract The near-limit gaseous detonation behavior of three different methane–oxygen mixtures was investigated. Experiments were performed in transparent tubes of three different inner diameters (d). Due to the relatively large tube length l ($$\frac{l}{d} > 2500$$ except $$\frac{l}{d} > 1000$$ for the largest diameter), the tube was arranged in a spiral configuration for the convenience of testing. Photodiodes were spaced at uniform intervals along the tube to provide a high-resolution velocity measurement, such that up to eight cycles of the galloping mode were registered. From the velocity histogram and the probability distribution function, a bimodal behavior was observed in all galloping regimes for different unstable mixtures, with dominant modes near 70% of the Chapman–Jouguet detonation velocity ($$0.7D_{\mathrm{CJ}}$$) and $$D_{\mathrm{CJ}}$$. With decreasing pressure, the lower-velocity mode became more prevalent until the failure of detonation. The range of initial pressures, within which galloping detonations were observed, decreased rapidly with increasing tube diameter and with increasing mixture stability. These results suggest that both the instability and the boundary effect influence the existence of galloping detonations. The normalized wavelength of the galloping cycle ($$\frac{L}{d}$$) was in the range of 200–450 for the three different mixture compositions and exhibited a general trend that the wavelength increased with decreasing initial pressure. Gaseous detonation Near-limit detonation Galloping detonation Methane–oxygen Instability Ng, H. D. (orcid)0000-0002-8459-5990 aut Lee, J. H. S. aut Enthalten in Shock waves Springer Berlin Heidelberg, 1991 30(2020), 7-8 vom: 28. Feb., Seite 713-719 (DE-627)130966657 (DE-600)1068310-0 (DE-576)025185977 0938-1287 nnns volume:30 year:2020 number:7-8 day:28 month:02 pages:713-719 https://doi.org/10.1007/s00193-020-00940-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4277 AR 30 2020 7-8 28 02 713-719 |
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10.1007/s00193-020-00940-5 doi (DE-627)OLC2123448990 (DE-He213)s00193-020-00940-5-p DE-627 ger DE-627 rakwb eng 530 VZ Cao, W. verfasserin (orcid)0000-0003-0135-4209 aut Near-limit detonations of methane–oxygen mixtures in long narrow tubes 2020 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract The near-limit gaseous detonation behavior of three different methane–oxygen mixtures was investigated. Experiments were performed in transparent tubes of three different inner diameters (d). Due to the relatively large tube length l ($$\frac{l}{d} > 2500$$ except $$\frac{l}{d} > 1000$$ for the largest diameter), the tube was arranged in a spiral configuration for the convenience of testing. Photodiodes were spaced at uniform intervals along the tube to provide a high-resolution velocity measurement, such that up to eight cycles of the galloping mode were registered. From the velocity histogram and the probability distribution function, a bimodal behavior was observed in all galloping regimes for different unstable mixtures, with dominant modes near 70% of the Chapman–Jouguet detonation velocity ($$0.7D_{\mathrm{CJ}}$$) and $$D_{\mathrm{CJ}}$$. With decreasing pressure, the lower-velocity mode became more prevalent until the failure of detonation. The range of initial pressures, within which galloping detonations were observed, decreased rapidly with increasing tube diameter and with increasing mixture stability. These results suggest that both the instability and the boundary effect influence the existence of galloping detonations. The normalized wavelength of the galloping cycle ($$\frac{L}{d}$$) was in the range of 200–450 for the three different mixture compositions and exhibited a general trend that the wavelength increased with decreasing initial pressure. Gaseous detonation Near-limit detonation Galloping detonation Methane–oxygen Instability Ng, H. D. (orcid)0000-0002-8459-5990 aut Lee, J. H. S. aut Enthalten in Shock waves Springer Berlin Heidelberg, 1991 30(2020), 7-8 vom: 28. Feb., Seite 713-719 (DE-627)130966657 (DE-600)1068310-0 (DE-576)025185977 0938-1287 nnns volume:30 year:2020 number:7-8 day:28 month:02 pages:713-719 https://doi.org/10.1007/s00193-020-00940-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4277 AR 30 2020 7-8 28 02 713-719 |
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10.1007/s00193-020-00940-5 doi (DE-627)OLC2123448990 (DE-He213)s00193-020-00940-5-p DE-627 ger DE-627 rakwb eng 530 VZ Cao, W. verfasserin (orcid)0000-0003-0135-4209 aut Near-limit detonations of methane–oxygen mixtures in long narrow tubes 2020 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract The near-limit gaseous detonation behavior of three different methane–oxygen mixtures was investigated. Experiments were performed in transparent tubes of three different inner diameters (d). Due to the relatively large tube length l ($$\frac{l}{d} > 2500$$ except $$\frac{l}{d} > 1000$$ for the largest diameter), the tube was arranged in a spiral configuration for the convenience of testing. Photodiodes were spaced at uniform intervals along the tube to provide a high-resolution velocity measurement, such that up to eight cycles of the galloping mode were registered. From the velocity histogram and the probability distribution function, a bimodal behavior was observed in all galloping regimes for different unstable mixtures, with dominant modes near 70% of the Chapman–Jouguet detonation velocity ($$0.7D_{\mathrm{CJ}}$$) and $$D_{\mathrm{CJ}}$$. With decreasing pressure, the lower-velocity mode became more prevalent until the failure of detonation. The range of initial pressures, within which galloping detonations were observed, decreased rapidly with increasing tube diameter and with increasing mixture stability. These results suggest that both the instability and the boundary effect influence the existence of galloping detonations. The normalized wavelength of the galloping cycle ($$\frac{L}{d}$$) was in the range of 200–450 for the three different mixture compositions and exhibited a general trend that the wavelength increased with decreasing initial pressure. Gaseous detonation Near-limit detonation Galloping detonation Methane–oxygen Instability Ng, H. D. (orcid)0000-0002-8459-5990 aut Lee, J. H. S. aut Enthalten in Shock waves Springer Berlin Heidelberg, 1991 30(2020), 7-8 vom: 28. Feb., Seite 713-719 (DE-627)130966657 (DE-600)1068310-0 (DE-576)025185977 0938-1287 nnns volume:30 year:2020 number:7-8 day:28 month:02 pages:713-719 https://doi.org/10.1007/s00193-020-00940-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4277 AR 30 2020 7-8 28 02 713-719 |
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10.1007/s00193-020-00940-5 doi (DE-627)OLC2123448990 (DE-He213)s00193-020-00940-5-p DE-627 ger DE-627 rakwb eng 530 VZ Cao, W. verfasserin (orcid)0000-0003-0135-4209 aut Near-limit detonations of methane–oxygen mixtures in long narrow tubes 2020 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract The near-limit gaseous detonation behavior of three different methane–oxygen mixtures was investigated. Experiments were performed in transparent tubes of three different inner diameters (d). Due to the relatively large tube length l ($$\frac{l}{d} > 2500$$ except $$\frac{l}{d} > 1000$$ for the largest diameter), the tube was arranged in a spiral configuration for the convenience of testing. Photodiodes were spaced at uniform intervals along the tube to provide a high-resolution velocity measurement, such that up to eight cycles of the galloping mode were registered. From the velocity histogram and the probability distribution function, a bimodal behavior was observed in all galloping regimes for different unstable mixtures, with dominant modes near 70% of the Chapman–Jouguet detonation velocity ($$0.7D_{\mathrm{CJ}}$$) and $$D_{\mathrm{CJ}}$$. With decreasing pressure, the lower-velocity mode became more prevalent until the failure of detonation. The range of initial pressures, within which galloping detonations were observed, decreased rapidly with increasing tube diameter and with increasing mixture stability. These results suggest that both the instability and the boundary effect influence the existence of galloping detonations. The normalized wavelength of the galloping cycle ($$\frac{L}{d}$$) was in the range of 200–450 for the three different mixture compositions and exhibited a general trend that the wavelength increased with decreasing initial pressure. Gaseous detonation Near-limit detonation Galloping detonation Methane–oxygen Instability Ng, H. D. (orcid)0000-0002-8459-5990 aut Lee, J. H. S. aut Enthalten in Shock waves Springer Berlin Heidelberg, 1991 30(2020), 7-8 vom: 28. Feb., Seite 713-719 (DE-627)130966657 (DE-600)1068310-0 (DE-576)025185977 0938-1287 nnns volume:30 year:2020 number:7-8 day:28 month:02 pages:713-719 https://doi.org/10.1007/s00193-020-00940-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4277 AR 30 2020 7-8 28 02 713-719 |
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10.1007/s00193-020-00940-5 doi (DE-627)OLC2123448990 (DE-He213)s00193-020-00940-5-p DE-627 ger DE-627 rakwb eng 530 VZ Cao, W. verfasserin (orcid)0000-0003-0135-4209 aut Near-limit detonations of methane–oxygen mixtures in long narrow tubes 2020 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract The near-limit gaseous detonation behavior of three different methane–oxygen mixtures was investigated. Experiments were performed in transparent tubes of three different inner diameters (d). Due to the relatively large tube length l ($$\frac{l}{d} > 2500$$ except $$\frac{l}{d} > 1000$$ for the largest diameter), the tube was arranged in a spiral configuration for the convenience of testing. Photodiodes were spaced at uniform intervals along the tube to provide a high-resolution velocity measurement, such that up to eight cycles of the galloping mode were registered. From the velocity histogram and the probability distribution function, a bimodal behavior was observed in all galloping regimes for different unstable mixtures, with dominant modes near 70% of the Chapman–Jouguet detonation velocity ($$0.7D_{\mathrm{CJ}}$$) and $$D_{\mathrm{CJ}}$$. With decreasing pressure, the lower-velocity mode became more prevalent until the failure of detonation. The range of initial pressures, within which galloping detonations were observed, decreased rapidly with increasing tube diameter and with increasing mixture stability. These results suggest that both the instability and the boundary effect influence the existence of galloping detonations. The normalized wavelength of the galloping cycle ($$\frac{L}{d}$$) was in the range of 200–450 for the three different mixture compositions and exhibited a general trend that the wavelength increased with decreasing initial pressure. Gaseous detonation Near-limit detonation Galloping detonation Methane–oxygen Instability Ng, H. D. (orcid)0000-0002-8459-5990 aut Lee, J. H. S. aut Enthalten in Shock waves Springer Berlin Heidelberg, 1991 30(2020), 7-8 vom: 28. Feb., Seite 713-719 (DE-627)130966657 (DE-600)1068310-0 (DE-576)025185977 0938-1287 nnns volume:30 year:2020 number:7-8 day:28 month:02 pages:713-719 https://doi.org/10.1007/s00193-020-00940-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4277 AR 30 2020 7-8 28 02 713-719 |
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Cao, W. Ng, H. D. Lee, J. H. S. |
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near-limit detonations of methane–oxygen mixtures in long narrow tubes |
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Near-limit detonations of methane–oxygen mixtures in long narrow tubes |
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Abstract The near-limit gaseous detonation behavior of three different methane–oxygen mixtures was investigated. Experiments were performed in transparent tubes of three different inner diameters (d). Due to the relatively large tube length l ($$\frac{l}{d} > 2500$$ except $$\frac{l}{d} > 1000$$ for the largest diameter), the tube was arranged in a spiral configuration for the convenience of testing. Photodiodes were spaced at uniform intervals along the tube to provide a high-resolution velocity measurement, such that up to eight cycles of the galloping mode were registered. From the velocity histogram and the probability distribution function, a bimodal behavior was observed in all galloping regimes for different unstable mixtures, with dominant modes near 70% of the Chapman–Jouguet detonation velocity ($$0.7D_{\mathrm{CJ}}$$) and $$D_{\mathrm{CJ}}$$. With decreasing pressure, the lower-velocity mode became more prevalent until the failure of detonation. The range of initial pressures, within which galloping detonations were observed, decreased rapidly with increasing tube diameter and with increasing mixture stability. These results suggest that both the instability and the boundary effect influence the existence of galloping detonations. The normalized wavelength of the galloping cycle ($$\frac{L}{d}$$) was in the range of 200–450 for the three different mixture compositions and exhibited a general trend that the wavelength increased with decreasing initial pressure. © Springer-Verlag GmbH Germany, part of Springer Nature 2020 |
| abstractGer |
Abstract The near-limit gaseous detonation behavior of three different methane–oxygen mixtures was investigated. Experiments were performed in transparent tubes of three different inner diameters (d). Due to the relatively large tube length l ($$\frac{l}{d} > 2500$$ except $$\frac{l}{d} > 1000$$ for the largest diameter), the tube was arranged in a spiral configuration for the convenience of testing. Photodiodes were spaced at uniform intervals along the tube to provide a high-resolution velocity measurement, such that up to eight cycles of the galloping mode were registered. From the velocity histogram and the probability distribution function, a bimodal behavior was observed in all galloping regimes for different unstable mixtures, with dominant modes near 70% of the Chapman–Jouguet detonation velocity ($$0.7D_{\mathrm{CJ}}$$) and $$D_{\mathrm{CJ}}$$. With decreasing pressure, the lower-velocity mode became more prevalent until the failure of detonation. The range of initial pressures, within which galloping detonations were observed, decreased rapidly with increasing tube diameter and with increasing mixture stability. These results suggest that both the instability and the boundary effect influence the existence of galloping detonations. The normalized wavelength of the galloping cycle ($$\frac{L}{d}$$) was in the range of 200–450 for the three different mixture compositions and exhibited a general trend that the wavelength increased with decreasing initial pressure. © Springer-Verlag GmbH Germany, part of Springer Nature 2020 |
| abstract_unstemmed |
Abstract The near-limit gaseous detonation behavior of three different methane–oxygen mixtures was investigated. Experiments were performed in transparent tubes of three different inner diameters (d). Due to the relatively large tube length l ($$\frac{l}{d} > 2500$$ except $$\frac{l}{d} > 1000$$ for the largest diameter), the tube was arranged in a spiral configuration for the convenience of testing. Photodiodes were spaced at uniform intervals along the tube to provide a high-resolution velocity measurement, such that up to eight cycles of the galloping mode were registered. From the velocity histogram and the probability distribution function, a bimodal behavior was observed in all galloping regimes for different unstable mixtures, with dominant modes near 70% of the Chapman–Jouguet detonation velocity ($$0.7D_{\mathrm{CJ}}$$) and $$D_{\mathrm{CJ}}$$. With decreasing pressure, the lower-velocity mode became more prevalent until the failure of detonation. The range of initial pressures, within which galloping detonations were observed, decreased rapidly with increasing tube diameter and with increasing mixture stability. These results suggest that both the instability and the boundary effect influence the existence of galloping detonations. The normalized wavelength of the galloping cycle ($$\frac{L}{d}$$) was in the range of 200–450 for the three different mixture compositions and exhibited a general trend that the wavelength increased with decreasing initial pressure. © Springer-Verlag GmbH Germany, part of Springer Nature 2020 |
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Near-limit detonations of methane–oxygen mixtures in long narrow tubes |
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