How to make heat source of beer-lambert law (surface radiation) in TEq.

join4us · March 11, 2014, 04:43

Hi. There.

I wanna to make a source term of similar beer-lambert law.

The law related with permeation of light in water.

Q(z)=Q*exp(-kz)

Q(z): Light intensity at (z)
Q: Intensity of light at surface (given value)
k: extinction coefficient of light in water (0.035 for pure water)
z: depth

I use a test case that is half of water on a cup (big cup) with interFoam.

1. I already implemented boussinesq approx. in UEquation. as source term.

2. I wanna to know implementation of above the law in energy equation.
- is it possible to make source term?
- How can I find out free-surface coordinate location at alpha=0.5 ?
- if I find out the location point of free-surface, Could I use forAll to all domain with the law?

thanks to read it.

Germilly · September 27, 2018, 05:01

Hello,

Have you found any solution?
I think I am dealing with the same problem.

Regards,
GB

March 11, 2014, 04:43	How to make heat source of beer-lambert law (surface radiation) in TEq.	#1
join4us New Member edward jr shin Join Date: Sep 2013 Posts: 2 Rep Power: 0	Hi. There. I wanna to make a source term of similar beer-lambert law. The law related with permeation of light in water. Q(z)=Q*exp(-kz) Q(z): Light intensity at (z) Q: Intensity of light at surface (given value) k: extinction coefficient of light in water (0.035 for pure water) z: depth I use a test case that is half of water on a cup (big cup) with interFoam. 1. I already implemented boussinesq approx. in UEquation. as source term. 2. I wanna to know implementation of above the law in energy equation. - is it possible to make source term? - How can I find out free-surface coordinate location at alpha=0.5 ? - if I find out the location point of free-surface, Could I use forAll to all domain with the law? thanks to read it.

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September 27, 2018, 05:01		#2
Germilly New Member Germilly Barreto Join Date: Jul 2016 Location: Portugal Posts: 25 Rep Power: 10	Hello, Have you found any solution? I think I am dealing with the same problem. Regards, GB