Experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure
The effects of external forcing on a turbulent, liquid-fuelled, swirl-stabilized gas turbine combustor operating at a pressure of approximately 1 MPa are explored experimentally. In particular, the dynamics and coupling between the hydrodynamics, flame dynamics and acoustics are compared for various...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Passarelli, Mitchell L. [verfasserIn] Kazbekov, Askar [verfasserIn] Salazar, Victor [verfasserIn] Venkatesan, Krishna [verfasserIn] Steinberg, Adam M. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Proceedings of the Combustion Institute - Combustion Institute ; ID: gnd/1004025-0, Amsterdam [u.a.] : Elsevier, 2000, 39, Seite 4751-4759 |
|---|---|
| Übergeordnetes Werk: |
volume:39 ; pages:4751-4759 |
| DOI / URN: |
10.1016/j.proci.2022.10.024 |
|---|
| Katalog-ID: |
ELV010207899 |
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| 245 | 1 | 0 | |a Experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure |
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| 520 | |a The effects of external forcing on a turbulent, liquid-fuelled, swirl-stabilized gas turbine combustor operating at a pressure of approximately 1 MPa are explored experimentally. In particular, the dynamics and coupling between the hydrodynamics, flame dynamics and acoustics are compared for various forcing amplitudes at a fixed forcing frequency f f . The hydrodynamics were characterized via laser Mie scattering from droplets in the fuel spray, while the flame dynamics were qualitatively measured using chemiluminescence (CL) emissions in the 312 ± 12.5 nm wavelength range, both at 10 kHz. The dynamics at the frequencies of interest were extracted using spectral proper orthogonal decomposition (SPOD). In the unforced case, the spray and CL oscillations exhibited similar dynamics, dominated by oscillations at frequency f 0 , whereas the pressure fluctuations were predominantly at f P . As the forcing amplitude was increased from zero, the spray and CL exhibited changes in their power spectra characteristic of the suppression route to synchronization. The pressure fluctuations, however, were observed to follow the phase-locking route to synchronization. In contrast with expectations from synchronization theory, the amplitude of the pressure fluctuations increased significantly not only after lock-on, but also as the frequency detuning with f f decreased. It is shown that this increase in amplitude is not due to intermittency in the frequency of the pressure oscillations. The simultaneous occurrence of phase-locking and suppression illustrates the rich variety of dynamics that can occur in practical combustor systems. In addition, the amplification of the pressure oscillations based on the frequency detuning with the forcing suggests that classical reasoning based on the Rayleigh Index may not be sufficient to understand the high amplitude behaviour of multimodal systems. | ||
| 650 | 4 | |a Combustion instability | |
| 650 | 4 | |a Thermoacoustics | |
| 650 | 4 | |a Cross-frequency interactions | |
| 650 | 4 | |a Synchronization | |
| 650 | 4 | |a External forcing | |
| 700 | 1 | |a Kazbekov, Askar |e verfasserin |0 (orcid)0000-0001-6652-557X |4 aut | |
| 700 | 1 | |a Salazar, Victor |e verfasserin |4 aut | |
| 700 | 1 | |a Venkatesan, Krishna |e verfasserin |4 aut | |
| 700 | 1 | |a Steinberg, Adam M. |e verfasserin |0 (orcid)0000-0001-6571-6673 |4 aut | |
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10.1016/j.proci.2022.10.024 doi (DE-627)ELV010207899 (ELSEVIER)S1540-7489(22)00515-6 DE-627 ger DE-627 rda eng 660 VZ Passarelli, Mitchell L. verfasserin (orcid)0000-0003-0105-9111 aut Experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The effects of external forcing on a turbulent, liquid-fuelled, swirl-stabilized gas turbine combustor operating at a pressure of approximately 1 MPa are explored experimentally. In particular, the dynamics and coupling between the hydrodynamics, flame dynamics and acoustics are compared for various forcing amplitudes at a fixed forcing frequency f f . The hydrodynamics were characterized via laser Mie scattering from droplets in the fuel spray, while the flame dynamics were qualitatively measured using chemiluminescence (CL) emissions in the 312 ± 12.5 nm wavelength range, both at 10 kHz. The dynamics at the frequencies of interest were extracted using spectral proper orthogonal decomposition (SPOD). In the unforced case, the spray and CL oscillations exhibited similar dynamics, dominated by oscillations at frequency f 0 , whereas the pressure fluctuations were predominantly at f P . As the forcing amplitude was increased from zero, the spray and CL exhibited changes in their power spectra characteristic of the suppression route to synchronization. The pressure fluctuations, however, were observed to follow the phase-locking route to synchronization. In contrast with expectations from synchronization theory, the amplitude of the pressure fluctuations increased significantly not only after lock-on, but also as the frequency detuning with f f decreased. It is shown that this increase in amplitude is not due to intermittency in the frequency of the pressure oscillations. The simultaneous occurrence of phase-locking and suppression illustrates the rich variety of dynamics that can occur in practical combustor systems. In addition, the amplification of the pressure oscillations based on the frequency detuning with the forcing suggests that classical reasoning based on the Rayleigh Index may not be sufficient to understand the high amplitude behaviour of multimodal systems. Combustion instability Thermoacoustics Cross-frequency interactions Synchronization External forcing Kazbekov, Askar verfasserin (orcid)0000-0001-6652-557X aut Salazar, Victor verfasserin aut Venkatesan, Krishna verfasserin aut Steinberg, Adam M. verfasserin (orcid)0000-0001-6571-6673 aut Enthalten in Combustion Institute ; ID: gnd/1004025-0 Proceedings of the Combustion Institute Amsterdam [u.a.] : Elsevier, 2000 39, Seite 4751-4759 Online-Ressource (DE-627)495741140 (DE-600)2197968-6 (DE-576)259486582 1873-2704 nnns volume:39 pages:4751-4759 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_31 GBV_ILN_63 GBV_ILN_95 GBV_ILN_150 GBV_ILN_2004 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2336 GBV_ILN_4251 AR 39 4751-4759 |
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10.1016/j.proci.2022.10.024 doi (DE-627)ELV010207899 (ELSEVIER)S1540-7489(22)00515-6 DE-627 ger DE-627 rda eng 660 VZ Passarelli, Mitchell L. verfasserin (orcid)0000-0003-0105-9111 aut Experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The effects of external forcing on a turbulent, liquid-fuelled, swirl-stabilized gas turbine combustor operating at a pressure of approximately 1 MPa are explored experimentally. In particular, the dynamics and coupling between the hydrodynamics, flame dynamics and acoustics are compared for various forcing amplitudes at a fixed forcing frequency f f . The hydrodynamics were characterized via laser Mie scattering from droplets in the fuel spray, while the flame dynamics were qualitatively measured using chemiluminescence (CL) emissions in the 312 ± 12.5 nm wavelength range, both at 10 kHz. The dynamics at the frequencies of interest were extracted using spectral proper orthogonal decomposition (SPOD). In the unforced case, the spray and CL oscillations exhibited similar dynamics, dominated by oscillations at frequency f 0 , whereas the pressure fluctuations were predominantly at f P . As the forcing amplitude was increased from zero, the spray and CL exhibited changes in their power spectra characteristic of the suppression route to synchronization. The pressure fluctuations, however, were observed to follow the phase-locking route to synchronization. In contrast with expectations from synchronization theory, the amplitude of the pressure fluctuations increased significantly not only after lock-on, but also as the frequency detuning with f f decreased. It is shown that this increase in amplitude is not due to intermittency in the frequency of the pressure oscillations. The simultaneous occurrence of phase-locking and suppression illustrates the rich variety of dynamics that can occur in practical combustor systems. In addition, the amplification of the pressure oscillations based on the frequency detuning with the forcing suggests that classical reasoning based on the Rayleigh Index may not be sufficient to understand the high amplitude behaviour of multimodal systems. Combustion instability Thermoacoustics Cross-frequency interactions Synchronization External forcing Kazbekov, Askar verfasserin (orcid)0000-0001-6652-557X aut Salazar, Victor verfasserin aut Venkatesan, Krishna verfasserin aut Steinberg, Adam M. verfasserin (orcid)0000-0001-6571-6673 aut Enthalten in Combustion Institute ; ID: gnd/1004025-0 Proceedings of the Combustion Institute Amsterdam [u.a.] : Elsevier, 2000 39, Seite 4751-4759 Online-Ressource (DE-627)495741140 (DE-600)2197968-6 (DE-576)259486582 1873-2704 nnns volume:39 pages:4751-4759 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_31 GBV_ILN_63 GBV_ILN_95 GBV_ILN_150 GBV_ILN_2004 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2336 GBV_ILN_4251 AR 39 4751-4759 |
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10.1016/j.proci.2022.10.024 doi (DE-627)ELV010207899 (ELSEVIER)S1540-7489(22)00515-6 DE-627 ger DE-627 rda eng 660 VZ Passarelli, Mitchell L. verfasserin (orcid)0000-0003-0105-9111 aut Experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The effects of external forcing on a turbulent, liquid-fuelled, swirl-stabilized gas turbine combustor operating at a pressure of approximately 1 MPa are explored experimentally. In particular, the dynamics and coupling between the hydrodynamics, flame dynamics and acoustics are compared for various forcing amplitudes at a fixed forcing frequency f f . The hydrodynamics were characterized via laser Mie scattering from droplets in the fuel spray, while the flame dynamics were qualitatively measured using chemiluminescence (CL) emissions in the 312 ± 12.5 nm wavelength range, both at 10 kHz. The dynamics at the frequencies of interest were extracted using spectral proper orthogonal decomposition (SPOD). In the unforced case, the spray and CL oscillations exhibited similar dynamics, dominated by oscillations at frequency f 0 , whereas the pressure fluctuations were predominantly at f P . As the forcing amplitude was increased from zero, the spray and CL exhibited changes in their power spectra characteristic of the suppression route to synchronization. The pressure fluctuations, however, were observed to follow the phase-locking route to synchronization. In contrast with expectations from synchronization theory, the amplitude of the pressure fluctuations increased significantly not only after lock-on, but also as the frequency detuning with f f decreased. It is shown that this increase in amplitude is not due to intermittency in the frequency of the pressure oscillations. The simultaneous occurrence of phase-locking and suppression illustrates the rich variety of dynamics that can occur in practical combustor systems. In addition, the amplification of the pressure oscillations based on the frequency detuning with the forcing suggests that classical reasoning based on the Rayleigh Index may not be sufficient to understand the high amplitude behaviour of multimodal systems. Combustion instability Thermoacoustics Cross-frequency interactions Synchronization External forcing Kazbekov, Askar verfasserin (orcid)0000-0001-6652-557X aut Salazar, Victor verfasserin aut Venkatesan, Krishna verfasserin aut Steinberg, Adam M. verfasserin (orcid)0000-0001-6571-6673 aut Enthalten in Combustion Institute ; ID: gnd/1004025-0 Proceedings of the Combustion Institute Amsterdam [u.a.] : Elsevier, 2000 39, Seite 4751-4759 Online-Ressource (DE-627)495741140 (DE-600)2197968-6 (DE-576)259486582 1873-2704 nnns volume:39 pages:4751-4759 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_31 GBV_ILN_63 GBV_ILN_95 GBV_ILN_150 GBV_ILN_2004 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2336 GBV_ILN_4251 AR 39 4751-4759 |
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10.1016/j.proci.2022.10.024 doi (DE-627)ELV010207899 (ELSEVIER)S1540-7489(22)00515-6 DE-627 ger DE-627 rda eng 660 VZ Passarelli, Mitchell L. verfasserin (orcid)0000-0003-0105-9111 aut Experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The effects of external forcing on a turbulent, liquid-fuelled, swirl-stabilized gas turbine combustor operating at a pressure of approximately 1 MPa are explored experimentally. In particular, the dynamics and coupling between the hydrodynamics, flame dynamics and acoustics are compared for various forcing amplitudes at a fixed forcing frequency f f . The hydrodynamics were characterized via laser Mie scattering from droplets in the fuel spray, while the flame dynamics were qualitatively measured using chemiluminescence (CL) emissions in the 312 ± 12.5 nm wavelength range, both at 10 kHz. The dynamics at the frequencies of interest were extracted using spectral proper orthogonal decomposition (SPOD). In the unforced case, the spray and CL oscillations exhibited similar dynamics, dominated by oscillations at frequency f 0 , whereas the pressure fluctuations were predominantly at f P . As the forcing amplitude was increased from zero, the spray and CL exhibited changes in their power spectra characteristic of the suppression route to synchronization. The pressure fluctuations, however, were observed to follow the phase-locking route to synchronization. In contrast with expectations from synchronization theory, the amplitude of the pressure fluctuations increased significantly not only after lock-on, but also as the frequency detuning with f f decreased. It is shown that this increase in amplitude is not due to intermittency in the frequency of the pressure oscillations. The simultaneous occurrence of phase-locking and suppression illustrates the rich variety of dynamics that can occur in practical combustor systems. In addition, the amplification of the pressure oscillations based on the frequency detuning with the forcing suggests that classical reasoning based on the Rayleigh Index may not be sufficient to understand the high amplitude behaviour of multimodal systems. Combustion instability Thermoacoustics Cross-frequency interactions Synchronization External forcing Kazbekov, Askar verfasserin (orcid)0000-0001-6652-557X aut Salazar, Victor verfasserin aut Venkatesan, Krishna verfasserin aut Steinberg, Adam M. verfasserin (orcid)0000-0001-6571-6673 aut Enthalten in Combustion Institute ; ID: gnd/1004025-0 Proceedings of the Combustion Institute Amsterdam [u.a.] : Elsevier, 2000 39, Seite 4751-4759 Online-Ressource (DE-627)495741140 (DE-600)2197968-6 (DE-576)259486582 1873-2704 nnns volume:39 pages:4751-4759 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_31 GBV_ILN_63 GBV_ILN_95 GBV_ILN_150 GBV_ILN_2004 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2336 GBV_ILN_4251 AR 39 4751-4759 |
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10.1016/j.proci.2022.10.024 doi (DE-627)ELV010207899 (ELSEVIER)S1540-7489(22)00515-6 DE-627 ger DE-627 rda eng 660 VZ Passarelli, Mitchell L. verfasserin (orcid)0000-0003-0105-9111 aut Experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The effects of external forcing on a turbulent, liquid-fuelled, swirl-stabilized gas turbine combustor operating at a pressure of approximately 1 MPa are explored experimentally. In particular, the dynamics and coupling between the hydrodynamics, flame dynamics and acoustics are compared for various forcing amplitudes at a fixed forcing frequency f f . The hydrodynamics were characterized via laser Mie scattering from droplets in the fuel spray, while the flame dynamics were qualitatively measured using chemiluminescence (CL) emissions in the 312 ± 12.5 nm wavelength range, both at 10 kHz. The dynamics at the frequencies of interest were extracted using spectral proper orthogonal decomposition (SPOD). In the unforced case, the spray and CL oscillations exhibited similar dynamics, dominated by oscillations at frequency f 0 , whereas the pressure fluctuations were predominantly at f P . As the forcing amplitude was increased from zero, the spray and CL exhibited changes in their power spectra characteristic of the suppression route to synchronization. The pressure fluctuations, however, were observed to follow the phase-locking route to synchronization. In contrast with expectations from synchronization theory, the amplitude of the pressure fluctuations increased significantly not only after lock-on, but also as the frequency detuning with f f decreased. It is shown that this increase in amplitude is not due to intermittency in the frequency of the pressure oscillations. The simultaneous occurrence of phase-locking and suppression illustrates the rich variety of dynamics that can occur in practical combustor systems. In addition, the amplification of the pressure oscillations based on the frequency detuning with the forcing suggests that classical reasoning based on the Rayleigh Index may not be sufficient to understand the high amplitude behaviour of multimodal systems. Combustion instability Thermoacoustics Cross-frequency interactions Synchronization External forcing Kazbekov, Askar verfasserin (orcid)0000-0001-6652-557X aut Salazar, Victor verfasserin aut Venkatesan, Krishna verfasserin aut Steinberg, Adam M. verfasserin (orcid)0000-0001-6571-6673 aut Enthalten in Combustion Institute ; ID: gnd/1004025-0 Proceedings of the Combustion Institute Amsterdam [u.a.] : Elsevier, 2000 39, Seite 4751-4759 Online-Ressource (DE-627)495741140 (DE-600)2197968-6 (DE-576)259486582 1873-2704 nnns volume:39 pages:4751-4759 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_31 GBV_ILN_63 GBV_ILN_95 GBV_ILN_150 GBV_ILN_2004 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2336 GBV_ILN_4251 AR 39 4751-4759 |
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Passarelli, Mitchell L. ddc 660 misc Combustion instability misc Thermoacoustics misc Cross-frequency interactions misc Synchronization misc External forcing Experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure |
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660 VZ Experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure Combustion instability Thermoacoustics Cross-frequency interactions Synchronization External forcing |
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Experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure |
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experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure |
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Experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure |
| abstract |
The effects of external forcing on a turbulent, liquid-fuelled, swirl-stabilized gas turbine combustor operating at a pressure of approximately 1 MPa are explored experimentally. In particular, the dynamics and coupling between the hydrodynamics, flame dynamics and acoustics are compared for various forcing amplitudes at a fixed forcing frequency f f . The hydrodynamics were characterized via laser Mie scattering from droplets in the fuel spray, while the flame dynamics were qualitatively measured using chemiluminescence (CL) emissions in the 312 ± 12.5 nm wavelength range, both at 10 kHz. The dynamics at the frequencies of interest were extracted using spectral proper orthogonal decomposition (SPOD). In the unforced case, the spray and CL oscillations exhibited similar dynamics, dominated by oscillations at frequency f 0 , whereas the pressure fluctuations were predominantly at f P . As the forcing amplitude was increased from zero, the spray and CL exhibited changes in their power spectra characteristic of the suppression route to synchronization. The pressure fluctuations, however, were observed to follow the phase-locking route to synchronization. In contrast with expectations from synchronization theory, the amplitude of the pressure fluctuations increased significantly not only after lock-on, but also as the frequency detuning with f f decreased. It is shown that this increase in amplitude is not due to intermittency in the frequency of the pressure oscillations. The simultaneous occurrence of phase-locking and suppression illustrates the rich variety of dynamics that can occur in practical combustor systems. In addition, the amplification of the pressure oscillations based on the frequency detuning with the forcing suggests that classical reasoning based on the Rayleigh Index may not be sufficient to understand the high amplitude behaviour of multimodal systems. |
| abstractGer |
The effects of external forcing on a turbulent, liquid-fuelled, swirl-stabilized gas turbine combustor operating at a pressure of approximately 1 MPa are explored experimentally. In particular, the dynamics and coupling between the hydrodynamics, flame dynamics and acoustics are compared for various forcing amplitudes at a fixed forcing frequency f f . The hydrodynamics were characterized via laser Mie scattering from droplets in the fuel spray, while the flame dynamics were qualitatively measured using chemiluminescence (CL) emissions in the 312 ± 12.5 nm wavelength range, both at 10 kHz. The dynamics at the frequencies of interest were extracted using spectral proper orthogonal decomposition (SPOD). In the unforced case, the spray and CL oscillations exhibited similar dynamics, dominated by oscillations at frequency f 0 , whereas the pressure fluctuations were predominantly at f P . As the forcing amplitude was increased from zero, the spray and CL exhibited changes in their power spectra characteristic of the suppression route to synchronization. The pressure fluctuations, however, were observed to follow the phase-locking route to synchronization. In contrast with expectations from synchronization theory, the amplitude of the pressure fluctuations increased significantly not only after lock-on, but also as the frequency detuning with f f decreased. It is shown that this increase in amplitude is not due to intermittency in the frequency of the pressure oscillations. The simultaneous occurrence of phase-locking and suppression illustrates the rich variety of dynamics that can occur in practical combustor systems. In addition, the amplification of the pressure oscillations based on the frequency detuning with the forcing suggests that classical reasoning based on the Rayleigh Index may not be sufficient to understand the high amplitude behaviour of multimodal systems. |
| abstract_unstemmed |
The effects of external forcing on a turbulent, liquid-fuelled, swirl-stabilized gas turbine combustor operating at a pressure of approximately 1 MPa are explored experimentally. In particular, the dynamics and coupling between the hydrodynamics, flame dynamics and acoustics are compared for various forcing amplitudes at a fixed forcing frequency f f . The hydrodynamics were characterized via laser Mie scattering from droplets in the fuel spray, while the flame dynamics were qualitatively measured using chemiluminescence (CL) emissions in the 312 ± 12.5 nm wavelength range, both at 10 kHz. The dynamics at the frequencies of interest were extracted using spectral proper orthogonal decomposition (SPOD). In the unforced case, the spray and CL oscillations exhibited similar dynamics, dominated by oscillations at frequency f 0 , whereas the pressure fluctuations were predominantly at f P . As the forcing amplitude was increased from zero, the spray and CL exhibited changes in their power spectra characteristic of the suppression route to synchronization. The pressure fluctuations, however, were observed to follow the phase-locking route to synchronization. In contrast with expectations from synchronization theory, the amplitude of the pressure fluctuations increased significantly not only after lock-on, but also as the frequency detuning with f f decreased. It is shown that this increase in amplitude is not due to intermittency in the frequency of the pressure oscillations. The simultaneous occurrence of phase-locking and suppression illustrates the rich variety of dynamics that can occur in practical combustor systems. In addition, the amplification of the pressure oscillations based on the frequency detuning with the forcing suggests that classical reasoning based on the Rayleigh Index may not be sufficient to understand the high amplitude behaviour of multimodal systems. |
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Experimental study of forced synchronization and cross-coupling in a liquid-fuelled gas turbine combustor at elevated pressure |
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