Premixed combustion in a turbulent boundary layer with injection

✍ Scribed by S. Meunier; M. Champion; J.C. Bellet

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 483 KB
• Volume: 50
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(83)90064-0

✦ Synopsis

The reactive flow obtained by injecting a fresh mixture of propane and air into a stream of hot gas through a porous plate is studied both theoretically and experimentally. Using mass weighted Favre averages, we close the system of partial differential equations through a k'-~'model of turbulence and a probability density function of the product mass fraction. The closed set of seven mean transport equations is solved for an injection rate varying between 0 and 2%. The numerical results are compared with measurements of mean velocity, streamwise rms velocity, and mean temperature, and good agreement is shown for injection rate values up to 1%. For larger rates of injection, factors such as the transve~e pressure gradient and dissipation of the turbulent kinetic energy due to heat release, not taken into account by the k-e'model, become inportant and the extent of agreement is reduced.