Exploration of shock-induced flow dynamics and turbulence-driven combustion optimization in advanced cavity configurations of hydrogen fueled scramjet combustors
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Shaik Shajahan
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Raju Muthyala
Abstract
This study investigates the impact of shockwaves induced by various combustor wall geometries – wedge, wavy wall, circular bumps, and triangular bumps – on scramjet combustor performance. Using CFD simulations in ANSYS Fluent 23.1 with RANS equations and the SST turbulence model, key parameters such as velocity, static pressure, temperature, turbulence intensity, and combustion efficiency are analyzed. Circular bumps exhibit superior performance, achieving higher turbulence intensity (42 %), enhanced fuel-air mixing, and minimized static pressure losses (8 %), optimizing supersonic flow dynamics. This geometry ensures better combustion efficiency, reducing unburned fuel and maximizing heat release. While wedge and triangular geometries improve mixing and flow stability, they are less effective than circular bumps. The wavy wall structure provides a balanced performance. The findings highlight the potential of circular bumps in advancing scramjet combustor designs, offering valuable insights for hypersonic propulsion system enhancements.
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Research ethics: The authors declare that no experiments involving human participants or animals were conducted in this study.
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Informed consent: Not applicable for this study, as no human participants were involved.
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Author Contributions: All authors contributed significantly and equally to the research reported in this manuscript.
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Use of Large Language Models, Ai and Machine Learning Tools: Not applicable.
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Conflict of Interest: The authors declare that there are no conflicts of interest regarding the publication of this paper. The authors have no financial or personal relationships that could inappropriately influence the work presented in this paper.
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Research Funding: No funding received.
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Data Availability: All data used to support the findings of this study are included in the manuscript.
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Plagiaraism and Originality: The authors declare that this manuscript is their original work and has not been published elsewhere in any form. Furthermore, the manuscript is not under consideration for publication elsewhere. All sources of information are appropriately acknowledged, and no portion of this manuscript is plagiarized.
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© 2025 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Simulation and analysis of the over-expanded flow field in asymmetric nozzles with lateral expansion
- Design optimization of a fluidic thrust vectoring system based on coanda effect using meta-models
- Research on vibration damping of integral squeeze film damper based on fan rotor tester of turbofan
- Influence of conical shaft stiffness on the dynamic characteristics of flexible rotor
- A novel design methodology for preventing dislocation in the Zig-zag shroud
- Numerical study of effect of the casing slot on the tip leakage vortex and vortex cavitation of a fuel pump
- Multi-parameter study on array-jets impingement with crossflow temperature effect
- Exploration of shock-induced flow dynamics and turbulence-driven combustion optimization in advanced cavity configurations of hydrogen fueled scramjet combustors
- A part-load performance analysis method for gas turbines based on the stage by stages model of the power turbine
- Effect of lip-thickness on rectangular nozzle co-flowing subsonic jet
- Numerical analysis of pollutant formation and exhaust emission in a short annular combustor under part load operation
- Analysis of leakage characteristics and structural optimization of two-stage floating ring seal
- Hypersonic boundary layer flow at an axisymmetric stagnation point on a blunt body
- Numerical simulations of a turbulent lifted hydrogen flame in vitiated coflow with flamelet generated manifold approach
- Optimization of labyrinth seal leakage with independently varied tooth parameters using efficient global optimization
- Investigations of modified cooling hole injection angle configurations for improved trench film cooling performance
- Influence of non-axisymmetric endwall profiling under incoming vortex on the corner separation of a diffusion cascade
- Impact of annular ribs in sudden expansion flow conditions to control base pressure
- Effect of preheated swirling multi-annular jets on mixing and flow characteristics in various expanded confinements
Articles in the same Issue
- Frontmatter
- Simulation and analysis of the over-expanded flow field in asymmetric nozzles with lateral expansion
- Design optimization of a fluidic thrust vectoring system based on coanda effect using meta-models
- Research on vibration damping of integral squeeze film damper based on fan rotor tester of turbofan
- Influence of conical shaft stiffness on the dynamic characteristics of flexible rotor
- A novel design methodology for preventing dislocation in the Zig-zag shroud
- Numerical study of effect of the casing slot on the tip leakage vortex and vortex cavitation of a fuel pump
- Multi-parameter study on array-jets impingement with crossflow temperature effect
- Exploration of shock-induced flow dynamics and turbulence-driven combustion optimization in advanced cavity configurations of hydrogen fueled scramjet combustors
- A part-load performance analysis method for gas turbines based on the stage by stages model of the power turbine
- Effect of lip-thickness on rectangular nozzle co-flowing subsonic jet
- Numerical analysis of pollutant formation and exhaust emission in a short annular combustor under part load operation
- Analysis of leakage characteristics and structural optimization of two-stage floating ring seal
- Hypersonic boundary layer flow at an axisymmetric stagnation point on a blunt body
- Numerical simulations of a turbulent lifted hydrogen flame in vitiated coflow with flamelet generated manifold approach
- Optimization of labyrinth seal leakage with independently varied tooth parameters using efficient global optimization
- Investigations of modified cooling hole injection angle configurations for improved trench film cooling performance
- Influence of non-axisymmetric endwall profiling under incoming vortex on the corner separation of a diffusion cascade
- Impact of annular ribs in sudden expansion flow conditions to control base pressure
- Effect of preheated swirling multi-annular jets on mixing and flow characteristics in various expanded confinements
