hi,all

when grids are generated, this webpage maybe be helpful for you.that can estimat the normal spacing to be used in a viscous CFD grid.

can anyone tell what formula is used?

I assume you mean the calculator at this web site!

http://geolab.larc.nasa.gov/APPS/YPlus/

See if you can make sense of this HTML/JAVA code for the Sutherland formula! Or find a good book which explains it somewhat!

Boundary-Layer Theory by Hermann Schlichting, et al (Hardcover - December 1999) should tell you what you need.

Regards James

Thanks,James! sorry I forgot to write down the address of the website.however,the website that you offered is exactly what i meaning. I have the electronic edition book Boundary-Layer Theory by Hermann Schlichting,which was an old edition, translated by chinese. I will read it carefully. With kind regards

Please can u send electronic edition book Boundary-Layer Theory by Hermann Schlichting. I need to read it. Or please send link from where I can Download it

Chetan Shah

chetan1373@hotmail.com

I downloaded it witch is the chinese edition from the adress .

http://202.121.226.4/bookhtm/

http://202.121.226.4/bookhtm/search.asp?text=%B1%DF%BD%E7%B2%E3%C0%ED%C2%DB&item=%CA%E9%C3% FB&item0=ALL&Submit.x=7&Submit.y=13

if you are a user in the educational internet, i think you can download it.

Regards