Modeling and simulation of coaxial jet flow
This paper presents various hybrid approaches to simulate the turbulent coaxial jet ow and its uctuating quantities, a generic configuration relevant to engineering applications. The Detached- Eddy Simulation (DES) is applied to treat the turbulence. The in uence of the grid filter width used in the DES length scale has been preliminarily studied. It is found that the maximum formulation cannot resolve jet ow on the mesh used, while the cubic root formulation is able to capture the turbulent structures. Thereafter, two different DES formulations are used in combination with the cubic root formulation. In the first one, the DES length scale is substituted only in the turbulent kinetic energy equation, while in the second one additionally in the turbulence eddy viscosity expression. With respect to turbulent structure and spectral analysis, the second formulation has better resolution than the first one.
detached eddy simulation coaxial jet ow turbulence modeling jet noise short-cowl nozzle
J.Yan D.Eschricht F.Thiele X.Li
Institute of Fluid Mechanics and Engineering Acoustics (ISTA), Technical University of Berlin, 10623 School of Jet Propulsion, Beijing University of Aeronautics & Astronautics, Beijing, 100083 China
国际会议
The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)
上海
英文
2007-08-15（万方平台首次上网日期，不代表论文的发表时间）