[Throughflow-main] Questions on using SKV
Status: Alpha
Brought to you by:
boroli
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From: Oliver B. <oli...@we...> - 2012-12-12 12:21:36
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Re: Questions on using SKV Postby boroli » 27 Jun 2012 21:08 You're welcome. There is a special git branch for centrifugal compressor design of the bladedesigner. Please post all further questions regarding the bladedesigner at the bladedesigner forum. Thanks! Re: Questions on using SKV Postby mstrocking » 27 Jun 2012 14:31 Hi, thank you for the answers. Is there an example for a radial compressor for the Blade Designer? Re: Questions on using SKV Postby boroli » 22 Jun 2012 14:20 Hi, you can use the BladeDesigner Software, which has support for creating the grid and write out the cgns file with all needed Initial and boundary values: http://sourceforge.net/projects/bladedesigner/. You can also create manually for each blade row, the input file in ASCII format. For the documentation of the parameters, please have a look into the doc directory. There is a handbook (written in German). Unfortunately I have not the time to translate it for you into English. Maybe some translation software will do the job for you. At the moment I think, the molar mass is hardcoded in daten.cpp. And from that the specific gas constant is computed. But it should be possible to make this run-time selectable. Cp is initialised in Knoten.cpp, but it is possible to use a NASA polynom (coefficents read from the cgns file). Cp is the computed in Knoten::update_cp(double T). With this cp and R from daten.cpp, kappa is computed in each node. At least static pressure, Temperature and the velocity should be in the output file. Totalpressure is not computed for the moment, but if you want it, just comment out the desired lines. Have a look at CGNSformat.cpp -> CGNSformat::writeCGNS In order to visualise the cgns file, we also convert it to vtk and use paraview. Oliver Questions on using SKV Postby mstrocking » 20 Jun 2012 13:03 I would like to use the SKV program, but I don't know how to generate a grid. Should I use some 3rd party program, are there examples on this? How can I put the initial parameters (Omega,r,p,z,sigma,entropie) into a CGNS file, where can I get information on its structure and which editor would you suggest? Also I'm not sure if I understand what the parameters above stand for. Is it possible to change the gas constant R or to give moll mass in the input to SKV? Is to possible to give the heat capacity c_p in the input? Is it doable to retrieve Total and Relative Static Pressure and Temperature from the output file? I cannot see it in the 'FlowSolution', but it seems like it is computed internally in SKV (at least Total values are, AFAIK). What is the preferred way to visualize the data? I'm currently converting CGNS to VTK and viewing it in ParaView and HDFView to look into the CGNS file. |