Volume 4, 2013Progress in Propulsion Physics
|Page(s)||569 - 582|
|Section||Chapter Five. Combustion diagnostics and modeling|
|Published online||06 March 2013|
Assumed PDF modeling in rocket combustor simulations
University of Stuttgart, Institute of Combustion
In order to account for the interaction between turbulence and chemistry, a multivariate assumed PDF (Probability Density Function) approach is used to simulate a model rocket combustor with finite-rate chemistry. The reported test case is the PennState preburner combustor with a single shear coaxial injector. Experimental data for the wall heat flux is available for this configuration. Unsteady RANS (Reynolds-averaged Navier-Stokes) simulation results with and without the assumed PDF approach are analyzed and compared with the experimental data. Both calculations show a good agreement with the experimental wall heat flux data. Significant changes due to the utilization of the assumed PDF approach can be observed in the radicals, e. g., the OH mass fraction distribution, while the effect on the wall heat flux is insignificant.
© Owned by the authors, published by EDP Sciences, 2013