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supersonic flow at inlet and subsonic flow at outlet |
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March 13, 2011, 00:11 |
supersonic flow at inlet and subsonic flow at outlet
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#1 |
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pradeep
Join Date: Mar 2011
Posts: 2
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Plz help me
i m working on supersonic flow initial conditions Mach no.1.5 inlet condition velocity and total pressure -supersonic flow outlet condition-subsonic flow i m getting problem is slover mach no. is going very high then crash it plz help me whatever condition is required for this type of problem. |
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March 13, 2011, 06:46 |
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#2 |
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Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,871
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Try very small physical time steps to get things started. If that does not work try local time scale factor. Once things are starting to converge go back to physical time scale.
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March 14, 2011, 04:58 |
supersonic flow at inlet and subsonic flow at outlet
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#3 |
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pradeep
Join Date: Mar 2011
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thank you very much Glenn Horrocks,
i tried but still i m getting problem i mention about the boundary conditions and error --------------------------------------------------------------------+ | ERROR #001100279 has occurred in subroutine ErrAction. | | Message: | | Floating point exception: Overflow | | | | | | | | | | | +--------------------------------------------------------------------+ +--------------------------------------------------------------------+ | ERROR #001100279 has occurred in subroutine ErrAction. | | Message: | | Stopped in routine FPX: C_FPX_HANDLER | | | | | | | | | | | +--------------------------------------------------------------------+ +--------------------------------------------------------------------+ | An error has occurred in cfx5solve: | | | | The ANSYS CFX solver exited with return code 1. No results file | | has been created. | +--------------------------------------------------------------------+ End of solution stage. +--------------------------------------------------------------------+ | The following user files have been saved in the directory | | F:\run\plasam_101_010: | | | | mon | +--------------------------------------------------------------------+ This run of the ANSYS CFX Solver has finished. 1. Diameter: 1m 2. Mach no.:1.5 3.temp: 1300k 4.Velocity at inlet:1053m/s(cal from mach no.) 5. at outlet condition: mass flow rate:224.3 plz tell me the process its very urgent plz help me |
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March 14, 2011, 17:02 |
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#4 | |
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