Al,
For answers to your questions on thermal modeling and analysis you can
refer to these books- 'Transport Phenomina' by R. B. Bird, W. E. Stewart,
E. N. Lightfoot or 'Analysis of Transport Phenomina' by W. M. Deen.
Typically, enthalpy will not figure into heat transfer equations, but
specific heat and thermal conductivity will. Enthalpy is usually used in
thermodynamics analyses..
We use FEMLAB to carry out modeling/simulation of thermal and other
transport-related problems for our devices. It is a matlab based tool for
finite element modeling/analysis of 3-d geometries and for solving coupled
PDEs representing physical phenomina and comes with good tutorial
examples. You can ask for a demo version (www.femlab.com), we have found
it to be well suited for such analysis compared to other packages. Note
that you will also need Matlab to use it.
Hope this helps,
-Ashish
=========================================================================
Ashish Pattekar |Off. : 610-758-4668
Integrated Microchemical Systems Lab|Res. : 610-954-9352
Department of Chemical Engineering |Email : asp2@lehigh.edu
Lehigh University, |Web : http://www.lehigh.edu/~asp2
Bethlehem, PA 18015 |
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>
>
>I am using ANSYS 5.3. I am looking for examples of thermal problems. I
>have explored the example problem in the Help file, but the type of
>boundary conditions I wish to set do not appear in this example.
>
>Also, I am looking for descriptions of some of the fine points involved
>in the thermal modeling, such as:
>
>-- what equations are used in the thermal model?
>-- how are boundary conditions set in the thermal model?
>-- must the enthalpy for each material be defined, or is it sufficient
>to define just the specific heat, and thermal conductivity?
> (Alternatively: where does the enthalpy appear in the equations?)
>
>Thanks,
>
>Al Henning
>
>--
>Albert K. Henning, Ph.D.
>Director of Technology 650-617-0854
>Redwood Microsystems, Inc. 650-326-1899 (FAX)
>959 Hamilton Avenue henning@redwoodmicro.com
>Menlo Park, CA 94025 http://www.redwoodmicro.com
>
>
>