what is Reynolds number in my case, help please

Sufyan · October 7, 2012, 12:02

Re=density*velocity*dia/ viscocity fluid is air , dia=1m , velocity is 40m/s

Viscosity for air got 1.7894e-5 kg/ms density= 1.225 Kg/m3

I want to simulate air at 40m/s flow past a 2D cylinder.

cfd seeker · October 7, 2012, 13:49

Re.No= 1.225*40*1/(1.789*10^-5)= 2.738*10^6
this is so simple....what's the issue?

Sufyan · October 7, 2012, 14:49

Quote:

Originally Posted by cfd seeker

Re.No= 1.225*40*1/(1.789*10^-5)= 2.738*10^6
this is so simple....what's the issue?

Thanks . I was just confuse, i havent imagine such a huge value of reynolds number ,i am dealing with.

October 7, 2012, 12:02	what is Reynolds number in my case, help please	#1
Sufyan New Member Muhammad Sufyan Join Date: Jun 2012 Location: South Korea Posts: 17 Rep Power: 13	Re=densityvelocitydia/ viscocity fluid is air , dia=1m , velocity is 40m/s Viscosity for air got 1.7894e-5 kg/ms density= 1.225 Kg/m3 I want to simulate air at 40m/s flow past a 2D cylinder. __________________ SUFI

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October 7, 2012, 13:49		#2
cfd seeker Senior Member Join Date: Mar 2011 Location: Germany Posts: 552 Rep Power: 20	Re.No= 1.225401/(1.78910^-5)= 2.73810^6 this is so simple....what's the issue?