Self Similarity of Turbulent Kinetic Energy

m_saha · August 10, 2018, 23:10

Hello all, I am studying jet flow in my CFD course. My question is, Can turbulent kinetic energy profiles be self similar in case of jet flow? If it is so, what is the way to normalize it? Thanks in advance.

phoenics_cfd · August 16, 2018, 10:04

The maximum velocity excess and the jet half width can be used to normalise the cross-stream profiles of the mean and turbulence fields. An excellent discussion of similarity theory for free turbulent shear flows is given here:

Rodi, W. “A review of experimental data of uniform density free turbulent boundary layers” In “Studies in convection” B.E. Launder (Editor), Academic Press, New York, 1975.

m_saha · August 16, 2018, 10:12

Thanks a lot.

August 10, 2018, 23:10	Self Similarity of Turbulent Kinetic Energy	#1
m_saha New Member M Saha Join Date: Aug 2018 Posts: 2 Rep Power: 0	Hello all, I am studying jet flow in my CFD course. My question is, Can turbulent kinetic energy profiles be self similar in case of jet flow? If it is so, what is the way to normalize it? Thanks in advance.

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August 16, 2018, 10:04		#2
phoenics_cfd Member michael malin Join Date: Mar 2009 Location: london Posts: 35 Rep Power: 18	The maximum velocity excess and the jet half width can be used to normalise the cross-stream profiles of the mean and turbulence fields. An excellent discussion of similarity theory for free turbulent shear flows is given here: Rodi, W. “A review of experimental data of uniform density free turbulent boundary layers” In “Studies in convection” B.E. Launder (Editor), Academic Press, New York, 1975.

August 16, 2018, 10:12		#3
m_saha New Member M Saha Join Date: Aug 2018 Posts: 2 Rep Power: 0	Thanks a lot.