John C. Chien

June 10, 1999 17:08 
Re: CFD and fluid power components
(1). Very good. So, you are looking for CFD solution of flow through pipes and fittings. (2). For the straight pipe and straight fitting, axisymmetric flow analysis would give you quicker answer because it is 2D axisymmetric. (3). In general, you need a 3D analysis. (4). I can only guess that you need a 3D incompressible flow code, you need the geometry of the pipe, fitting, and Tjunction ( internal geometry), you need to build a computational mesh. Then you set the inlet, exit and the wall boundary conditions to start the computation. (5). The wall temperature can be set to either the constant temperature condition, or zero heat transfer condition. (6). Since you are looking for the temperature increase effect, you have to include the energy equation in the calculation. You also must include the viscous dissipating function terms in the energy equation. (7). Is this enough for you to get started?
