Re: [TRNSYS-users] generating wind pressure coefficients

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Subject: Re: [TRNSYS-users] generating wind pressure coefficients

From: "Dols, William Stuart (Fed)" <william.dols@nist.gov>

Date: Mon, 6 Jul 2020 12:55:01 +0000

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Thread-topic: [TRNSYS-users] generating wind pressure coefficients

David,
You can use CFD0 incorporated into the CFD0Editor to generate wind pressure coefficient profiles for your specific building geometry.
Please see the following web page for the Coupled Multizone-CFD Tutorial which provides a link to a zip file that contains a CONTAM-30-Tutorial.pdf and files required to run the example cases. https://www.nist.gov/el/energy-and-environment-division-73200/nist-multizone-modeling/software-tools/contam/tutorials

See CASE 2: Exterior Zone Coupling within the PDF for a tutorial on how to accomplish this using the CFD0 Editor.

- Stuart

W. Stuart Dols

National Institute of Standards and Technology

Engineering Laboratory

Energy and Environment Division

Indoor Air Quality and Ventilation Group

Gaithersburg, MD USA

From: TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org> On Behalf Of Jean Marais via TRNSYS-users
Sent: Friday, July 3, 2020 10:11 AM
To: TRNSYS users mailing list at OneBuilding.org <trnsys-users@lists.onebuilding.org>
Cc: Jean Marais <jeannieboef@gmail.com>
Subject: Re: [TRNSYS-users] generating wind pressure coefficients

I would also love to know. I've been pushing for DesignBuilder to incorporate this into their external CFD Model so I can transfer the boundary conditions easily to e+. I've been waiting 7 years at least. Till now, I've been using the algorithm in e+ AFN modules, but it's not ideal. I have to manually tweak for courtyards, and so on.

Am Di., 30. Juni 2020 um 07:39 Uhr schrieb David BRADLEY via TRNSYS-users <trnsys-users@lists.onebuilding.org>:

Colleagues,

Does anyone have any suggestions for tools to help with generating wind pressure coefficient values for buildings? I used to use CpGenerator and was very happy with its results. Sadly, it is no longer available. CPCALC is a little rough around the edges and I do not have project time or budget to get Cp values by testing. I imagine that the values can be generated by CFD analysis but I have no direct experience in that regard. I am interested to know whether people have found cost effective ways of generating Cp values.

I hope everyone is staying healthy!

David
-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA
 
P:+1.608.274.2577
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d.bradley@tess-inc.com
 
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