Turbulent combustion modelling in a side dump ramjet combustor
Abstract
Experimental and theoretical studies are reported on the turbulent flow in a side dump rectangular combustor. Hot wire velocimetry was used to measure the axial and transverse mean velocity and turbulence intensity components in the nonreacting case. Flow oscillations in nonreacting case are determined from spectral analysis of the signal. In the presence of combustion, gas analysis (CO, CO2) was carried out in the chamber to obtain the temperature field. Light emission from CH radicals provides additional information which is interpreted as mean rate of heat release per unit volume. Regions where combustion takes place are identified. Measurements are compared with calculations performed with a combustion model relying on the flamelet concept and using a transport equation for the surface density. Good agreement is achieved between the model predictions and experimental results.
- Publication:
-
Joint Propulsion Conference and Exhibit
- Pub Date:
- July 1992
- Bibcode:
- 1992jpnt.confTV...M
- Keywords:
-
- Dump Combustors;
- Ramjet Engines;
- Turbulent Combustion;
- Turbulent Flow;
- Carbon Dioxide Concentration;
- Carbon Monoxide;
- Combustion Chambers;
- Free Radicals;
- Gas Analysis;
- Hot-Wire Anemometers;
- Hydrocarbons;
- Fluid Mechanics and Heat Transfer