CFD Online URL
Home > Wiki > Diffusion term

Diffusion term

From CFD-Wiki

Revision as of 22:25, 14 September 2005 by Zxaar (Talk | contribs)
Jump to: navigation, search

Discretisation of Diffusive Term

1. Description

A control volume in mesh is made up of set of faces enclosing it. The figure 1.1 shows a typical situation. Where A represent the magnitude of area of the face. And n represents the normal unit vector of the face under consideration.
Nm descretisation diffusionterms 01.jpg
Figure 1.1
 \vec r_{0} and  \vec r_{1} are position vector of centroids of cells cell 0 and cell 1 respectively.
 {\rm{d\vec s}} =  \vec r_{1}  - \vec r_{0}

My wiki