Source Data Input from Other Files

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Author Message   shohel mahmud (smahmud) Member Username: smahmud Post Number: 5 Registered: 09-2003 Posted on Tuesday, June 29, 2004 - 08:55 am:    Hi there I need some help/information about the handling of initial data. Suppose I solved a 2-D steady-state problem in Flexpde to get field data of velocity (u,v), temperature (Temp). For example, I can use the buoyant.pde (Samples-steady_state-fluid-bouyant.pde) in the Flexpde’s sample files. Now, I want to solve the following equation: “dxx(H)+dyy(H)=source” for the same geometry, where H is a variable and source is a function of already obtained steady-state data of u, v, and T. How can I set this problem, where source is related to some given data and unchanged throughout the solution for H. For one boundary, the boundary condition is an integral function similar to the following equation: “Integral(C1*normal(grad(Temp)))” along the line ‘ac’ as shown in the attached figure. Other boundary conditions are either “value( )” or “natural( )” boundary condition. Shohel see geometry and bc heatline.pdf (50.8 k)   Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 171 Registered: 06-2003 Posted on Tuesday, June 29, 2004 - 03:11 pm:    In general, you can transfer data from one FlexPDE run to another by use of TABLE or TRANSFER commands (see these items in the Help Index). You can transfer single values by use of a SUMMARY page with the EXPORT modifier. But there is no mechanism for forming a partial integral table, ie, an integral against a variable limit.