how can i calculate the lift and drag coefficient
 

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

Re: how can i calculate the lift and drag coeffici
 

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.

Re: how can i calculate the lift and drag coeffici
 

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 .

Re: how can i calculate the lift and drag coeffici
 

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

Re: how can i calculate the lift and drag coeffici
 

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

Re: how can i calculate the lift and drag coeffici
 

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.