1 / 3

~Introduction~ Numerical Analysis of turbulence

~Introduction~ Numerical Analysis of turbulence. １. Reduce computational cost. No wall models. W all F unction. Numerical analysis of turbulence. Design of industrial products. Reducing noise ・ Improvement of the stability of the body ・ R educing resistance…etc. DNS. LES. RANS.

aletta
Download Presentation

~Introduction~ Numerical Analysis of turbulence

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ~Introduction~ Numerical Analysis of turbulence １ Reduce computational cost No wall models Wall Function Numerical analysis of turbulence Design of industrial products Reducing noise ・ Improvement of the stability of the body ・ Reducing resistance…etc. DNS LES RANS [1] [1] [1] accuracy How to ･･･? efficiency [1] Rodi,W. Large-eddy simulations of the flow past bluff bodies: state-of-the art, JSME Int. J.,Ser.B Vol.41, No.2(1998), pp.361-374

  2. ~Numerical Method~ Analytical Wall Function 2 Momentum equation in the near-wall cells SGSeddy viscosity Velocity gradient Momentum eqn. (L.H.S) Velocity Outer layer Viscous sub-layer Inner layer wall Wall shear stress Boundary condition related to the momentum equation [2] Suga, K., Craft, T.J., Iacovides, H., 2005, A Generalized Analytical Wall-Function for Turbulence, Transactions of the Japan Society of Mechanical Engineers, 71, 711 B

  3. ~Results and discussions~ The Improvement of the new LES-AWF 3 Mean velocity Turbulence kinetic energy conventional New

More Related