openFoam //thermal buoyancy on a double skin facade

Fetze · October 2, 2019, 03:19

I have a problem with a double facade. The goal is to find out the surface and air temperatures in the space between the panes. To simplify the problem and get a feeling for it there is no radiation and the surfaces get a fixed temperature.
Open atmosphere boundary conditions
That didn't get me anywhere. I use OF 1806 with the solver buoyantSimpleFoam
Had anyone a similar problem?
Tobias

Attached a picture of my case and BCs
Thanks for helping

muhammss · July 1, 2020, 09:20

Hi.

I am running into a similar problem, did you find solution?

Fetze · July 2, 2020, 02:40

Hi,

its a long time ago, but try totalPressure for bottom, front and zeroGradint for Top and for U presuereInletOutletVelocity (0,0,0) for bottom, front and inletoutlet for top

muhammss · July 2, 2020, 11:16

Hi.

thanks.

Did you publish any article based on that research?
I am working on CFD of double skin facades at present. My aim is to understand various thermophysical phenomenon, inside temperatures and flow profiles.

Why did you use buoyantSimpleFoam against buoyantBoussineqSimpleFoam? Actually i am also using the former, because for my case the latter did not give me accurate velocity profiles inside the cavity.

muhammss · July 2, 2020, 11:18

Hi.

If possible, can you share one case file of working case for reference?

Fetze · July 3, 2020, 02:33

Hi,

that wasnt for research. This is a too planed building in which we wanted to estimate the influence of the facade on the cooling load. So I can't give you a case, sorry. I used the solver for the radiation.

muhammss · July 3, 2020, 06:01

Hi,

No problem.
Did you integrate DSF with this complete building to understand/estimate the heating and cooling loads?
I am at present performing 2D DSF simulation - to understand velocity and temperatures inside the cavity. I am also interested to understand how different configurations of the opening of top and bottom influence the flow.

What could be the next step is to integrate the DSF with the complete building or neighborhood to understand how it affects the heating or cooling loads. Did you have any experience with this?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
OpenFOAM 4.0 Released	CFDFoundation	OpenFOAM Announcements from OpenFOAM Foundation	2	October 6, 2017 05:40
OpenFOAM Training Jan-Jul 2017, Virtual, London, Houston, Berlin	CFDFoundation	OpenFOAM Announcements from Other Sources	0	January 4, 2017 06:15
Request for CFD help: Dynamic double skin facades	fadisami	CFD Freelancers	2	August 4, 2014 10:38
air flow simulation in double skin facade with openfoam	gygfei	OpenFOAM	1	December 20, 2010 04:50
what's wrong about my code for 2d burgers equation	morxio	Main CFD Forum	3	April 27, 2007 10:38

July 1, 2020, 09:20		#2
muhammss New Member M. Salman Siddiqui Join Date: Mar 2015 Posts: 16 Rep Power: 11	Hi. I am running into a similar problem, did you find solution?

July 2, 2020, 02:40		#3
Fetze New Member Tobias Join Date: Apr 2019 Posts: 4 Rep Power: 7	Hi, its a long time ago, but try totalPressure for bottom, front and zeroGradint for Top and for U presuereInletOutletVelocity (0,0,0) for bottom, front and inletoutlet for top

July 2, 2020, 11:16		#4
muhammss New Member M. Salman Siddiqui Join Date: Mar 2015 Posts: 16 Rep Power: 11	Hi. thanks. Did you publish any article based on that research? I am working on CFD of double skin facades at present. My aim is to understand various thermophysical phenomenon, inside temperatures and flow profiles. Why did you use buoyantSimpleFoam against buoyantBoussineqSimpleFoam? Actually i am also using the former, because for my case the latter did not give me accurate velocity profiles inside the cavity.

July 2, 2020, 11:18		#5
muhammss New Member M. Salman Siddiqui Join Date: Mar 2015 Posts: 16 Rep Power: 11	Hi. If possible, can you share one case file of working case for reference?

July 3, 2020, 02:33		#6
Fetze New Member Tobias Join Date: Apr 2019 Posts: 4 Rep Power: 7	Hi, that wasnt for research. This is a too planed building in which we wanted to estimate the influence of the facade on the cooling load. So I can't give you a case, sorry. I used the solver for the radiation.

July 3, 2020, 06:01		#7
muhammss New Member M. Salman Siddiqui Join Date: Mar 2015 Posts: 16 Rep Power: 11	Hi, No problem. Did you integrate DSF with this complete building to understand/estimate the heating and cooling loads? I am at present performing 2D DSF simulation - to understand velocity and temperatures inside the cavity. I am also interested to understand how different configurations of the opening of top and bottom influence the flow. What could be the next step is to integrate the DSF with the complete building or neighborhood to understand how it affects the heating or cooling loads. Did you have any experience with this?