### 1.2.6. Conjugate Heat Transfer

CFX enables you to specify regions that are occupied by conducting solids. You can specify such a region as a solid domain using the domains form.

To specify a source of energy in a solid domain, you should create a subdomain for the solid region (which may include the entire region) and apply the source term to the subdomain. Energy sources can be specified in terms of a source value and a linear source coefficient.

Information on the mathematical implementation of subdomain sources is available in Sources in the CFX-Solver Theory Guide.

The mathematical equations solved in a solid domain are available in the Solver Theory documentation in Conjugate Heat Transfer in the CFX-Solver Theory Guide.

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