Hi Marcello, If you supply 0.1 m/s through the floor (as experiment in your mind) that would lead to about 133 ACH if the room is 2.7 m high. So 28 is possible...
According to my (limited) knowledge, and in absence of an answer by the experts, phenomena causing air flow in COMIS include - wind pressure (meteo data in...
Hi all, Currently, I got a big problem with coupling TRNSYS and COMIS. Is there anyone familiar with integration with TRNSYS and COMIS? I hope someone can help...
Dear Ming, To use the coupling, you should simply create a new project in Simulation Studio, and choose File/New ... Then select 'Coupled project'. This will...
Hi all, Currently, I am trying to solve a big problem about integration with TRNSYS and COMIS. I am supposed to get two kinds of result: temperature and...
Dear TRNSYS and COMIS users, I cannot get cos-files with Type 157. I attach the files of coupled project created with the wizard of Simulation Studio. It is a...
Dear Ken, The COS files are written by COMIS at the end of a COMIS simulation. Therefore, they are not available when COMIS is used as a TRNSYS type. As far as...
Hello, I used to use COMIS several ago and have just coming back to it. Could any of the users of this group suggest any text that discusses how the nodes and...
See in: Fundamentals of the Multizone Air Flow Model- COMIS Edited by: Helmut E Feustel and Alison Raynor-Hoosen Francis Allard (France), Viktor B Dorer...
Thanks for the advice. I will attempt to get my library to get hold of it. While I am waiting, is there any source that is freely available on the internet. ...
Hello all, I am using comis301.exe and I am having some problems with Comis excel and dos. No SET-file; using defaults Comis finished WRONG NUMBER OF COMMAND...
Hi, You can obtain the structure of the command line arguments by just typing the name of the executable. The typical command to run the simulation of...
Dear COMIS users, An increasing number of users contact me about numerical problems running coupled simulations (using COMIS as a TYPE in TRNSYS). It appears...
my dear I need help In the coupeled projects (comis-trnsys) how can I defined a temperature schedule and can I defined a hourly temperature schedule for three...
Dear Mohamed Comis schedules are not working in coupled comis-trnsys projects. All time depending variables of comis have to be declared as inputs and must be...
Dear COMIS users, I have a question about the calculation of the opening area in the case of pivoting windows. For this type of windows the opening plane is...
Colleagues, I am attempting to model a clerestory building. On the lower roof there are a number of solar chimneys that rise above the roof but not so high as...
Multizone Infiltration ModellingDear David, I can provide some reference values from the wind tunnel experiments performed for this study: Unsteady natural...
Dear David The pressure coefficient at the end of a chimney is a combination the Cp value on the considered position above the roof and on the Cp value of the...
David, in the past TNO has done wind tunnel research on that topic. It was the basis for Dutch regulations for exhaust outlet and chimney positions above the...
Try this: Experimental and Theoretical Studies of a Solar Chimney with Uniform Wall Heat Flux by Jónas Halldórsson and Christian Byrjalsen Aalborg University...
Dear David, I can provide some reference values for you. However, it may not be the best case to use any "reference" data due to the strong dependence between...
Hi All, My name is Sylwia Wiankowska I am a student from Poland and I am planning t to use COMIS in my master thesis. But before I will use it I want to...
Dear all, I used the COMIS 3.2 to run a case which was studied by Roulet et al.(1999). The results show there are large differences in the same settings. I...
Dear Justin In your input file two things are missing: 1) According to Roulet(1999) zone D is a thermally layered zone with a temperature gradient of 1.67K/m....
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