LPT random walk

Edison_Ge · September 10, 2010, 00:52

I want to use Lagrangian particle and stochasitc trasport equation to simulate passive scalar tranportation. But I don't know how to incorporate effactive diffusivity from turbulece model to partciel. Can somebody help?
How can I let particel read turbulence->nuEff()?

Edison_Ge · September 10, 2010, 12:29

I achieved it by creating a volScalarField nuEff in createField.H and then in the solver assign turbulence->nuEff() to the nuEff field. In this way, the cloud can take the nuEff field as a member and then interpolate it to the particle location.
It seems to work, but is there a more elegant way of doing it ?

sisetrun · September 9, 2016, 08:49

Hey,

it's been a while since your last post but I am working on the same issue at the moment.
Have you built a more "elegant" solution?

Cheers

September 10, 2010, 00:52	LPT random walk	#1
Edison_Ge Member edison Join Date: May 2009 Location: Australia Posts: 35 Rep Power: 16	I want to use Lagrangian particle and stochasitc trasport equation to simulate passive scalar tranportation. But I don't know how to incorporate effactive diffusivity from turbulece model to partciel. Can somebody help? How can I let particel read turbulence->nuEff()?

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September 10, 2010, 12:29		#2
Edison_Ge Member edison Join Date: May 2009 Location: Australia Posts: 35 Rep Power: 16	I achieved it by creating a volScalarField nuEff in createField.H and then in the solver assign turbulence->nuEff() to the nuEff field. In this way, the cloud can take the nuEff field as a member and then interpolate it to the particle location. It seems to work, but is there a more elegant way of doing it ?

September 9, 2016, 08:49		#3
sisetrun Member Sebastian Trunk Join Date: Mar 2015 Location: Erlangen, Germany Posts: 60 Rep Power: 11	Hey, it's been a while since your last post but I am working on the same issue at the moment. Have you built a more "elegant" solution? Cheers