Доступ предоставлен для: Guest
TSFP DL Home Архив Исполнительный Комитет

TRANSVERSE INJECTION OF A PLANE REACTING JET INTO COMPRESSIBLE TURBULENT CHANNEL FLOW

Christoph Schaupp
Lehrstuhl fur Aerodynamik und Stromungsmechanik Technische Universitat Munchen Boltzmannstr. 15, D-85748 Garching

Holger Foysi
Aerodynamic Institute RWTH Aachen; Fachgebiet Stromungsmechanik TU Munchen, Boltzmannstr. 15, D-85748 Garching, Germany; UC San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA

Rainer Friedrich
Lehrstuhl für Aerodynamik, Technische Universität München Boltzmannstrasse 15, D-85748 Garching, Germany

Аннотация

A semi-implicit large-eddy simulation technique is used to predict transport and infinitely fast reaction processes of an H2/N2-jet injected through a narrow spanwise slot into a subsonic turbulent air flow between isothermal channel walls. The LES technique is based on approximate deconvolution and explicit modelling of the filtered heat release term. Spatial derivatives are computed using sixth order accurate central compact schemes. An explicit fourth-order Runge-Kutta algorithm serves for time-integration. Turbulent inflow conditions are generated by a separate LES of fully developed channel flow and are introduced well upstream of the injection station using characteristic boundary conditions. The complex transport processes in the vicinity of the injection region are highlighted by instantaneous and statistically averaged flow quantities.