single-phase boiling

rezahemmat1985 · June 12, 2012, 01:12

hi guys
I am simluating single-phase boiling in engine coolinhg passages via CFD software AVL Fire, but it diverges alot. I wanna to know what's the problem???I used a nice mesh (tet) , what do u think?what about turbulence parameters?I use turbulence lenght scale=0.001 m and turbulence kinetik energy 1 m2/s3 . I use k-e model and upwind scheme to discretise the all equations. please help me . if have any cooment tell me . thanks in advance
best wishes

Ayoshi · July 13, 2012, 13:47

first check your mesh using check info option. check for negative cells, volumes, skewness, partially negative cells, twisted faces. if u find any fault then u have to smoothen ur mesh or worst case redo whole thing

June 12, 2012, 01:12	single-phase boiling	#1
rezahemmat1985 New Member reza hemmat Join Date: Jan 2012 Posts: 24 Rep Power: 3	hi guys I am simluating single-phase boiling in engine coolinhg passages via CFD software AVL Fire, but it diverges alot. I wanna to know what's the problem???I used a nice mesh (tet) , what do u think?what about turbulence parameters?I use turbulence lenght scale=0.001 m and turbulence kinetik energy 1 m2/s3 . I use k-e model and upwind scheme to discretise the all equations. please help me . if have any cooment tell me . thanks in advance best wishes

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July 13, 2012, 13:47		#2
Ayoshi New Member Join Date: Jun 2012 Posts: 6 Rep Power: 2	first check your mesh using check info option. check for negative cells, volumes, skewness, partially negative cells, twisted faces. if u find any fault then u have to smoothen ur mesh or worst case redo whole thing