Variable name of turb. intensity

September 5, 2002, 07:05

I want to specify inlet value of turbulent intensity thru' plant.

What is the variable name - can you pl. suggest, whether, EPKE??

September 12, 2002, 00:13

WHAT IS EPKE IN PHOENICS.

pL. hELP

September 12, 2002, 06:27

You will have to specify KE and EP for the inlet if you are using k-e family turbulence models. The suggested values for KE and EP can be found in POLIS, or you can use your own values. KE and EP then will be solved by PHOENICS with the boundary conditions specified. EPKE = EP/KE which is a ratio of dissipation rate over turbulent energy, so this may be a measure of the state of turbulence.

September 13, 2002, 01:36

Thank you Dr. Hu

CHAM should take more care in Polis documentation, each qauntity should be well specified.

September 18, 2002, 03:46

I posted a similar question a year(ish) ago and got the following response.

EPKE = EP/KE and this ratio provides a measure of the frequency of the large-scale turbulent motion

You might like also to try to search the archives for epke.

September 5, 2002, 07:05	Variable name of turb. intensity	#1
Chatterjee Guest Posts: n/a	I want to specify inlet value of turbulent intensity thru' plant. What is the variable name - can you pl. suggest, whether, EPKE??

September 12, 2002, 00:13	WHAT IS EPKE	#2
ROY Guest Posts: n/a	WHAT IS EPKE IN PHOENICS. pL. hELP

September 12, 2002, 06:27	Re: Variable name of turb. intensity	#3
Hu Guest Posts: n/a	You will have to specify KE and EP for the inlet if you are using k-e family turbulence models. The suggested values for KE and EP can be found in POLIS, or you can use your own values. KE and EP then will be solved by PHOENICS with the boundary conditions specified. EPKE = EP/KE which is a ratio of dissipation rate over turbulent energy, so this may be a measure of the state of turbulence.

September 13, 2002, 01:36	Thanks Hu and ATTENTION CHAM	#4
ROY Guest Posts: n/a	Thank you Dr. Hu CHAM should take more care in Polis documentation, each qauntity should be well specified.

September 18, 2002, 03:46	Re: WHAT IS EPKE	#5
Short Guest Posts: n/a	I posted a similar question a year(ish) ago and got the following response. EPKE = EP/KE and this ratio provides a measure of the frequency of the large-scale turbulent motion You might like also to try to search the archives for epke.

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