- **OpenFOAM Running, Solving & CFD**
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- - **ShockTube tutorial modification**
(*https://www.cfd-online.com/Forums/openfoam-solving/111629-shocktube-tutorial-modification.html*)

ShockTube tutorial modificationCan anyone give me a bit of an explanation with i needed to input my patch types as symmetryPlanes instead of wall or patch in order to observe shockwave reflections in a shocktube?
my scenario that I modeled: 1 x 0.1 x 0.1 tube LHS to 0.5: p = 10atm, T = 300 0.5 to RHS: p = 1atm T = 300 runtime: 0.020 i think dimensions and initial conditions for p and setFieldsDict were all i changed (other then the symmetryPlane input). thanks, Cris |

sonicFoam strange results with shockTube slightly modified1 Attachment(s)
Hello,
I modified the shockTube tutorial keeping P_left = 10 atm, P_right = 1 atm, T=300. setFieldDict P is at 50% x: Case 1: x=1 nx =100 y=0.05 ny = 5 z=0.001 nz = 1 max U = 301 m/s Case2: x=1 nx=100 y_left=0.05 y_right=0.08 ny = 5 (diverging pipe) z=0.001 nz=1 max U = 100m/s Case3: x=1 nx=100 y_left=0.05 y_right=0.03 ny=5 (converging pipe) z=0.001 nz=1 max U = 24m/s logically thinking the results are incorrect. Can someone please help with why this could be happening? Update 2-Feb-2013: The above solution was with sonicFoam. I have tried now with rhoCentralFoam too. Exactly same behaviour! This time: shockTube tutorial, the standard in rhoCentralFoam shockTubeDiv : x_left = (-5,-1)(-5,1) x_right=(5,-1.05)(5,1.05) I have uploaded the cases for reference. Someone please help! |

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