Entropy Generation Analysis in Turbulent Reacting Flows and Near Wall: A Review
Amsini Sadiki1,2,3, Senda Agrebi1,3,4, Florian Ries1,3
1Institute of Reactive Flows and Diagnostics, Technical University of Darmstadt, 64287 Darmstadt, Germany.
Entropy (Basel, Switzerland)
|August 26, 2022
Summary
Entropy generation analysis (EGA) in turbulent combustion systems is reviewed, covering experimental and numerical methods. EGA offers a promising approach for optimizing combustion efficiency in various applications.
Area of Science:
- Thermodynamics
- Fluid Mechanics
- Combustion Science
Background:
- Turbulent combustion systems are complex, with entropy generation significantly impacting efficiency.
- Understanding entropy generation is crucial for optimizing these systems.
- Existing research spans various parametric studies and applications.
Purpose of the Study:
- To review contributions to entropy generation analysis (EGA) in turbulent combustion.
- To highlight experimental and numerical modeling approaches.
- To identify future research directions for efficient combustion systems.
Main Methods:
- Review of parametric studies including wall effects, operating conditions, fuels, and geometries.
- Discussion of experimental challenges and the lumped approach for total entropy generation rate.
- Description of numerical modeling within non-equilibrium thermodynamics, including RANS and LES.
Main Results:
- Comprehensive overview of EGA in turbulent combustion.
- Analysis of different modeling degrees for entropy production terms.
- Exemplary investigations from canonical to practical configurations (engines, turbines, power plants).
Conclusions:
- Entropy generation analysis is a valuable tool for optimizing combustion systems.
- Further research is needed to enhance EGA for improved combustion efficiency.
- The review provides a foundation for future development in this area.
Keywords:
applicationscombustion systemsentropy generationexergynear wallnumerical modeling approachesoptimizationreviewMore Related Videos
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