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July 24, 2005, 23:08 |
Anyone know DUNS?
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#1 |
Guest
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I want to learn DUNS code. I have the test case named 'airfoil' which is originally for subsonic flow and I want to compute supersonic flow by using it. The following is my new script2 file:
# This is the input deck for the DUNS-2.4-alpha # Generated by Douglas Schwer 4/30/00 # # ************************************************** ************* # Specify solution domain by reading in a grid/connectivity file # ************************************************** ************* grid formatted # # ************************************************** ************* # Select flow type (necessary) # ************************************************** ************* # flow-field viscous turbulent # # ************************************************** ************* # Select gas model and properties for the gas # ************************************************** ************* # gas-properties compressible gas-constant 287. gamma 1.4 viscosity 1e-5 prandtl-number 0.7 # # ************************************************** ************* # Specify turbulent parameters # ************************************************** ************* # turbulence prandtl-number 1. # # ************************************************** ************* # Initialize the flow field to begin simulation # ************************************************** ************* # initialize pressure 0.7e5 temperature 350. u-velocity 408. turbulent-intensity 0.012 turbulent-viscosity 7.e-5 # # ************************************************** ************* # Set up boundary conditions for the flow field (necessary) # ************************************************** ************* # boundary-conditions surface 1 viscous-wall adiabatic # surface 2 inviscid-wall adiabatic # surface 3 inviscid-wall adiabatic # surface 4 supersonic-outflow # surface 5 supersonic-inflow mach-number 1.2 temperature 350 pressure 0.7e5 turbulent-intensity 0.012 turbulent-viscosity 7.e-5 # # ************************************************** ************* # Spatial accuracy of flow field # ************************************************** ************* # spatial-accuracy third # # ************************************************** ************* # Select type of preconditioning # ************************************************** ************* # precondition inviscid on viscous on pressure 0.7e5 velocity 408. # # ************************************************** ************* # This will actually run a simulation for 1200 steps # ************************************************** ************* # run min-cfl max-vnn cfl 1.0 vnn 0.2 print-conv 5 print-rstrt 100 steps 1000 # # ************************************************** ************* # Save results in a new file # ************************************************** ************* # save-restart filename save # # ************************************************** ************* # Save plotting file # ************************************************** ************* # save-plotting filename save cell-vertices variables "u v p t tke nut" quit Help me. |
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July 24, 2005, 23:12 |
Re: Anyone know DUNS?
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#2 |
Guest
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to be continued: I got wrong info with my new script2 file: Program is stopping due to non-physical temperatures.
What is wrong? |
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