Thermal transport phenomena of turbulent jet diffusion flames by means of anisotropic k–ϵ–t2–ϵt model
✍ Scribed by Shuichi Torii
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 110 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0363-907X
No coin nor oath required. For personal study only.
✦ Synopsis
A numerical study is performed on transport phenomena in a turbulent jet di usion ame of hydrogen from a vertical circular nozzle. An anisotropic k--t 2t model and the eddy-dissipation model are employed to simulate thermal uid ow and combustion phenomena, respectively. The governing boundary-layer equations are discretized by means of a control volume ÿnite-di erence technique and are numerically solved. The model predicts the experimental data in the existing literature. It is found from the study that (i) the model employed here can be applied to combustion phenomenon, and (ii) the presence of ame enhances the anisotropy of turbulence and causes a substantial attenuation in the turbulent kinetic energy, that is, most turbulent kinetic energy in the ame in the downstream part is laden exclusively in the streamwise uctuation.