Доступ предоставлен для: Guest

ISSN Online: 2377-424X

ISBN Print: 978-1-56700-421-2

International Heat Transfer Conference 15
August, 10-15, 2014, Kyoto, Japan

Experimental and Numerical Study of a Cooled Rocket Combustion Chamber

Get access (open in a dialog) DOI: 10.1615/IHTC15.cmb.009238
pages 1310-1322

Аннотация

This paper presents the numerical simulation of a model rocket engine with a Reynolds-Averaged Navier-Stokes solver. The objective is to validate the prediction of heat fluxes at the walls of the combustion chamber versus experimental data. Two numerical strategies are developed for the wall boundary condition. The first one uses the experimental measurement of the temperature at the chamber wall. The second simulation simultaneously resolves turbulent combustion in the chamber and heat transfer in the wall and only requires the prescription of the cooling-fluid temperature and flow rate. The limitations of the simulation are also discussed, with specific attention on the critical issue of turbulent combustion modeling. The Reynolds-Averaged Navier-Stokes framework is shown to be very sensitive to combustion models, yielding unphysical results when combustion is modeled in a way that is not consistent with the steady-state assumption of the turbulence model.