ISSN Online: 2377-424X
International Heat Transfer Conference 3
APPLICATION OF INTEGRAL DIFFUSION METHOD TO A TURBULENT FLOW
要約
The generalization of the mixing-length theory of the turbulent incompressible flow is considered for the cases when the turbulent stress does not have a gradient expression. In this paper the formulas for turbulent stress tensor and heat flux vector are obtained. For the more private cases such as the turbulent boundary layer and channel flows these expressions are simplified by using the gradient representation, but the eddy diffusivity still keeps its integral representation. In the limiting case the integral diffusion model gives the Prandtl's mixing-length theory.
It is shown that the results obtained are in a satisfactory agreement with the data for the boundary layer and channel flows.
The turbulent Couette flow problem is also considered.
It is shown that the results obtained are in a satisfactory agreement with the data for the boundary layer and channel flows.
The turbulent Couette flow problem is also considered.