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Is it possible to modify turbulence constant in part of domain?

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Old   September 22, 2021, 13:11
Smile Is it possible to modify turbulence constant in part of domain?
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xicheng wang
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Hellow everyone,

I'm trying to use single-phase liquid to resolve the effect induced by steam condensation (steam to water). One of the main issues is that the current RANS modes are calibrated by single-phase flow tests.

In my case, the turbulent kinetic energy (tke) in the condensation core region is much higher than the usual single-phase flow and would not dissipate rapidly (intensity >50%). The least complicated way is to modify the 'beta*_inf'
(I use k-omega BSL) to avoid such rapid dissipation of k(tke).

My question is if it is possible to just modify this constant in the region closed to orifice but to keep the default value in the rest of the domain? Or, is there any simple way to avoid such rapid dissipation of k?
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fluent, rapid dissipation, turbulence model

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