On the importance of inlet boundary conditions for aerothermal predictions of turbine stages with large eddy simulation
| Autor: | Jérôme Dombard, Charlie Koupper, Laurent Gicquel, Florent Duchaine |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
020301 aerospace & aeronautics
geography geography.geographical_feature_category General Computer Science Turbine blade Stator General Engineering 02 engineering and technology Mechanics Aerodynamics Inlet 01 natural sciences Turbine 010305 fluids & plasmas law.invention 0203 mechanical engineering law 0103 physical sciences Combustor Environmental science Combustion chamber Large eddy simulation |
| Zdroj: | Computers & Fluids. 154:60-73 |
| ISSN: | 0045-7930 |
| DOI: | 10.1016/j.compfluid.2017.05.024 |
| Popis: | The analysis of a combustion chamber effects on the aerodynamics and thermal loads applied on a turbine stage is proposed. To do so, an integrated wall-modeled Large-Eddy Simulation of a combustion chamber simulator along with its high pressure turbine stage is performed and compared to a standalone turbine stage computation operated under the same mean conditions. For the standalone stage simulations, a parametric study of the turbulence injected at the turbine stage inlet is also discussed. For this specific configuration and with the mesh resolution used, results illustrate that the aerodynamic expansion of the turbine stage is almost insensitive to the inlet turbulent conditions. However, the temperature distribution in the turbine passages as well as on the stator and rotor walls are highly impacted by these inlet conditions underlying the importance of inlet conditions in turbine stage computations and the potential of integrated combustion chamber/turbine simulations in such a context. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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