- **ANSYS Meshing & Geometry**
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- - **Two or Three Dimensional for a coil**
(*http://www.cfd-online.com/Forums/ansys-meshing/89177-two-three-dimensional-coil.html*)

Two or Three Dimensional for a coil1 Attachment(s)
Hi all;
I'm solving fluid flow & heat transfer for a coil with a circular cross section according to the following attached figure. Just As anybody observes, this pattern has two returns (two couple elbows ). My question is that if I can model this problem by a two dimensional model or I have to model this example by a three dimensional one. The boundary conditions are same for every cross section. If your answer is ok, Please lead me how to consider this configuration. Also,Suppose , a gas within the coil is my model being heated by a liquid fluid. Which boundary condition is suitable for outlet Temperature? Dirichlet or neumann ,d()/dn=0.0 or another one? What's your opinion? What about should we take for other outlet boundary conditions,too ? For example, the pressure or velocity. Also, consider a semi-cylinder surrounds this coil. How can I mesh this three dimensional pattern by subtracting this semi-cylinder from coil? Actually, which mesh type with which quality can be used for this problem? My email is mehdiasgh@gmail.com for any further information. Thanks a lot for any help. Attachment 7930 |

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