how can i calculate the lift and drag coefficient

January 21, 2003, 09:48

when i read the the article about the cfd, i met the lift and drag curve ,but i don't know how to get them.please tell me. thanks

January 21, 2003, 21:41

it all depends on what you have. If you have a physical model, then you need to use a wind tunnel, but if you have a line profile (airfoil), then you might want to go to THEORY OF WING SECTIONS by Ira. H Abbot, perhaps it has one matching your airfoil.

January 22, 2003, 03:12

first thank you very much.and i have a profile and get the pressure about the profile of a submarine.then i want to know: how i calculate the drag coefficient with the distribution of the pressure .

January 22, 2003, 12:55

Go to C.C. Mei's book "The Applied Ocean Dynamics".

January 23, 2003, 02:20

thank you very much. I can't find this book.Can you provide some internet address about this thesis,please.

January 23, 2003, 16:16

Sorry, the full name of the book is actually:

<<The Applied Dynamics of Ocean Surface Waves>>

You can also look at Dean & Dalrymple book <<Water Wave Mechanics for Engineers and Scientists >>in Chapter 8, wave forces on bodies are discussed. These are all for non-viscid flows.

January 21, 2003, 09:48	how can i calculate the lift and drag coefficient	#1
yujun Guest Posts: n/a	when i read the the article about the cfd, i met the lift and drag curve ,but i don't know how to get them.please tell me. thanks

January 21, 2003, 21:41	Re: how can i calculate the lift and drag coeffici	#2
Carlos Guest Posts: n/a	it all depends on what you have. If you have a physical model, then you need to use a wind tunnel, but if you have a line profile (airfoil), then you might want to go to THEORY OF WING SECTIONS by Ira. H Abbot, perhaps it has one matching your airfoil.

January 22, 2003, 03:12	Re: how can i calculate the lift and drag coeffici	#3
yujun Guest Posts: n/a	first thank you very much.and i have a profile and get the pressure about the profile of a submarine.then i want to know: how i calculate the drag coefficient with the distribution of the pressure .

January 22, 2003, 12:55	Re: how can i calculate the lift and drag coeffici	#4
Wen Long Guest Posts: n/a	Go to C.C. Mei's book "The Applied Ocean Dynamics".

January 23, 2003, 02:20	Re: how can i calculate the lift and drag coeffici	#5
yujun Guest Posts: n/a	thank you very much. I can't find this book.Can you provide some internet address about this thesis,please.

January 23, 2003, 16:16	Re: how can i calculate the lift and drag coeffici	#6
Wen Long Guest Posts: n/a	Sorry, the full name of the book is actually: <<The Applied Dynamics of Ocean Surface Waves>> You can also look at Dean & Dalrymple book <<Water Wave Mechanics for Engineers and Scientists >>in Chapter 8, wave forces on bodies are discussed. These are all for non-viscid flows.

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