Wall Damping Function

May 7, 2003, 18:40

HI,

While working on k-epsilon turbulence model, for low Re case we use wall damping functions as given by Lam & Bremhost, and Launder-Sharma. I want to know how will we decide that how many cells from the wall boundary should we use the function. Is it just the cell adjacent to wall or on some other criteria.

Thanks

Apurva

May 8, 2003, 05:24

Hi,

Wall damping functions are applied to all the cells in the domain. The fact is that their value is 1 (no damping then...) far from the walls. The "frontier" is obtained as a result of the calculation and then, is very difficult to know which cells will be affected previously.

Best regards,

Gorka

May 9, 2003, 05:44

See Poisont & Veynante's book, page345 for details

May 9, 2003, 06:30

Hi,

can you tell me the full name of the book.

Thanks

Apurva

May 14, 2003, 12:34

The only book they wrote together: Theoretical and Numerical Combustion

May 7, 2003, 18:40	Wall Damping Function	#1
Apurva Guest Posts: n/a	HI, While working on k-epsilon turbulence model, for low Re case we use wall damping functions as given by Lam & Bremhost, and Launder-Sharma. I want to know how will we decide that how many cells from the wall boundary should we use the function. Is it just the cell adjacent to wall or on some other criteria. Thanks Apurva

May 8, 2003, 05:24	Re: Wall Damping Function	#2
gorka Guest Posts: n/a	Hi, Wall damping functions are applied to all the cells in the domain. The fact is that their value is 1 (no damping then...) far from the walls. The "frontier" is obtained as a result of the calculation and then, is very difficult to know which cells will be affected previously. Best regards, Gorka

May 9, 2003, 05:44	See Poisont & Veynante's book, page345 for details	#3
XX_x Guest Posts: n/a	See Poisont & Veynante's book, page345 for details

May 9, 2003, 06:30	Re: See Poisont & Veynante's book, page345 for det	#4
Apurva Guest Posts: n/a	Hi, can you tell me the full name of the book. Thanks Apurva

May 14, 2003, 12:34	The only book they wrote together:	#5
RMG Guest Posts: n/a	The only book they wrote together: Theoretical and Numerical Combustion

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