Boundary Layer

mahadevan.swamy · May 23, 2009, 23:33

I have a 2D car body in a tunnel and I am not sure if I have to add a boundary layer to the body and then mesh it. Should I add a boundary layer?

I was looking at the airfoil tutorial and they didn't even use a boundary layer. Can anyone tell me if I have to add a boundary layer? Thanks

harishg · May 24, 2009, 03:19

Adding BL depends on what you exactly plan to compute.

CapSizer · May 24, 2009, 05:27

Well if you need to ask this question I would suggest that it doesn't matter.

Null · May 24, 2009, 10:41

if you have a 2D representation of a car, a boundary layer is the least of your problems right now. for a car its real effects will come when you start getting interference drag in three dimensions .
besides, you don't " add a boundary layer", you use mathematics that handle a boundary layer. you need to dig way deeper into what a boundary later is.

sivam · May 24, 2009, 13:01

For a flow visualization simple geometry with outer body condition is enough.

May 23, 2009, 23:33	Boundary Layer	#1
mahadevan.swamy New Member mahadevan.swamy@gmail.com Join Date: Apr 2009 Posts: 15 Rep Power: 16	I have a 2D car body in a tunnel and I am not sure if I have to add a boundary layer to the body and then mesh it. Should I add a boundary layer? I was looking at the airfoil tutorial and they didn't even use a boundary layer. Can anyone tell me if I have to add a boundary layer? Thanks

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May 24, 2009, 03:19		#2
harishg Senior Member N/A Join Date: Mar 2009 Posts: 189 Rep Power: 17	Adding BL depends on what you exactly plan to compute.

May 24, 2009, 05:27		#3
CapSizer Senior Member Charles Join Date: Apr 2009 Posts: 185 Rep Power: 18	Well if you need to ask this question I would suggest that it doesn't matter.

May 24, 2009, 10:41		#4
Null New Member Join Date: May 2009 Posts: 11 Rep Power: 16	if you have a 2D representation of a car, a boundary layer is the least of your problems right now. for a car its real effects will come when you start getting interference drag in three dimensions . besides, you don't " add a boundary layer", you use mathematics that handle a boundary layer. you need to dig way deeper into what a boundary later is.

May 24, 2009, 13:01		#5
sivam Member SIVALINGAM Join Date: May 2009 Location: Kodaikanal,Madurai,India Posts: 31 Rep Power: 16	For a flow visualization simple geometry with outer body condition is enough.