k-? two equation turbulence model
k-? two equation turbulence model
(OP)
I need to find two parameters in order to implement it in the CFD software we are currently using. The two parameters are; Eddy k Energy Field and Eddy length field.
I have been told that the length can be averaged between min and max values of the Nikuradse formula, and the energy by μ / (ρ * L), where L is initial length. I have not been able to find the Nikuradse formula, what is it?
Is it some other way of finding these two parameters?
I have been told that the length can be averaged between min and max values of the Nikuradse formula, and the energy by μ / (ρ * L), where L is initial length. I have not been able to find the Nikuradse formula, what is it?
Is it some other way of finding these two parameters?





RE: k-? two equation turbulence model
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: k-? two equation turbulence model
RE: k-? two equation turbulence model
velocity profile is discussed here,
ht
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: k-? two equation turbulence model
RE: k-? two equation turbulence model
Pick the first free one,
http://www.texstan.com/m3.php
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: k-? two equation turbulence model