Flowfield Modeling in Practical Combustors: A Review

A. Some Engineering Combustion Processes I combustion system design and development today, efforts are being expended on producing efficient and clean combustion in a variety of practical situations. Here are some examples: 1) The gasoline engine. Here the combustion system must be free from knock, give certain ignition by spark, reduce heat transfer, and burn fuel completely under all conditions. 2) The diesel engine. High compression must provide smooth ignition, use all available oxygen, reduce heat transfer, reduce pumping power, and emit little smoke. 3) The industrial furnace. Flame control is especially important in providing specified distributions of radiant and convective heat transfer, complete combustion, freedom from noise and oscillation, and insensitivity to fuel changes. 4) The gas turbine. This is a high-intensity combustion engine which must burn fuel completely, cause little pressure drop, produce gases of nearly uniform temperature, occupy small volume, and maintain stable combustion over a wide range of operating conditions (pressure and air-fuel ratio, for example). The combustion designer has a formidable problem in aerothermochemistry, and the task is to provide a route which leads to the accomplishment of design objectives more quickly and less expensively than current practice permits.