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Diffusion term

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[[Image:Nm_descretisation_diffusionterms_01.jpg]] <br>
[[Image:Nm_descretisation_diffusionterms_01.jpg]] <br>
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Figure 1.1 <br>
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'''Figure 1.1''' <br>
<math> \vec r_{0} </math> and <math> \vec r_{1} </math> are position vector of centroids of cells cell 0 and cell 1 respectively. <br>
<math> \vec r_{0} </math> and <math> \vec r_{1} </math> are position vector of centroids of cells cell 0 and cell 1 respectively. <br>
<math> {\rm{d\vec s}} =  \vec r_{1}  - \vec r_{0}  </math>
<math> {\rm{d\vec s}} =  \vec r_{1}  - \vec r_{0}  </math>

Revision as of 22:26, 14 September 2005

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}

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