航空系系列学术讲座秋季学期第一场

      Many technical processes involve high pressure inert or reacting turbulent flows, notably the combustion in rocket, gas turbine and diesel internal combustion engine combustors and also processes in chemical engineering (e.g. using supercritical CO2). The CFD simulation of such processes requires a CFD code using thermodynamically consistent equations of state and suitable turbulent combustion models which take into account possible heat losses.

      In recent years we have developed a pressure based real gas combustion CFD code using OpenFOAM. Cubical equations of state are Peng-Robinson and Redlich-Kwong, sometimes using additionally a volume shift. Subgrid models are Smagorinsky, k-equation, Vreman and WALE models, combustion models are Flamelet models with heat loss extension and Eulerian Stochastic Fields. I will present an efficient method to simulate real gas reacting flows using flamelet tables and methods to represent heat loss within the flamelet tables.

    In the talk I will show validation of the code using inert supercritical nitrogen jets, transcritical co-injection of nitrogen and hydrogen and research rocket combustors studied experimentally at TU Munich and DLR Lampoldshausen. Comparison of experimental, Flamelet and Eulerian Fields results show the relative accuracy of the methods and their predictive capability in particular regarding the accurate representation of wall heat fluxes.

报告人简介：

      Michael Pfitzer is faculty full professor in the University of the Bundeswehr Munich. He got the PhD degree from Technische Universität München. His research interests include the thermodynamics and heat / mass transfer.