[esp-r] FW: Re: CFD problem

[Achim Geissler]

Dear Nalin, please find some more information below.

Thanks Aizaz

Regards 
Achim

-----Original Message-----
From: Aizaz Samuel [mailto:aizaz.a.samuel at strath.ac.uk] 
Sent: Dienstag, 28. April 2009 15:49
To: Achim Geissler
Subject: Re: [esp-r] Re: CFD problem

The 3 is the air flow node number representative of the CFD domain. 
Programming it in for each connection was easiest that way. The number after 
that is the air flow connection number representative of that CFD opening 
type boundary condition.

-Aizaz

On Tuesday 28 April 2009 14:07, you wrote:
> Dear Nalin
>
> A first glance at the files you sent seems to indicate that the conflation
> with the flow network is not really done. Did you try this via prj?
>
> Something like the following must be in the cfd file:
>
> *air_flow
> open1        Velocity  0.001 Temp 18.000 Hum  0.000 Area  0.000 Ang  0.000 
> 0.000    3    6 open2        Velocity -0.001 Temp 18.000 Hum  0.000 Area 
> 0.000 Ang  0.000  0.000    3    1
>
> The last numbers describe the connection with the air flow network.
> However, I am not quite sure what is what. The "6" and the "1" are most
> likely the corresponding connections in the air flow network. The "3" I
> can't recall right now.
>
> Don’t give up!
>
> Regards
> Achim
>
>
> -----Original Message-----
> From: esp-r-bounces at lists.strath.ac.uk
> [mailto:esp-r-bounces at lists.strath.ac.uk] On Behalf Of NALIN SWAROOP Sent:
> Dienstag, 28. April 2009 10:42
> To: Aizaz Samuel
> Cc: esp-r at lists.strath.ac.uk
> Subject: [esp-r] Re: CFD problem
>
> Please find attached zip file containing the ESP-r and CFD definition
> files.Please take a look and identify the problem
>
> Regards
> Nalin
>
> > It looks like the cells that you have nominated for each of the
> > boundary conditions (regardless of conflation type) are defined more
> > than once or not at all. Make sure that all the cells in each of x,y
> > and z directions are only used once when defining your boundary
> > conditions.
> >
> > If the problem persists please provide the exact text string
> > describing the error.
> >
> > -Aizaz
> >
> > On Thursday 23 April 2009 06:16, NALIN SWAROOP wrote:
> >> The problem is when I do CFD conflation with network flow and choose
> >> the respective nodes it asks which node is the CFD domain and which
> >> connection represents the openings when I give the respective names
> >> it gives the error that your cells are not compatible with the chosen
> >> face. please redefine and the program stops working at that point.
> >>
> >> Nalin
> >>
> >> > Dear Nalin,
> >> >
> >> > yes, you must use conflation of the CFD with an air flow network.
> >> >
> >> > Regards
> >> > Achim
> >> >
> >> >
> >> > -----Original Message-----
> >> > From: esp-r-bounces at lists.strath.ac.uk
> >> > [mailto:esp-r-bounces at lists.strath.ac.uk] On Behalf Of NALIN
> >> > SWAROOP
> >> > Sent: Mittwoch, 22. April 2009 11:50
> >> > To: esp-r at lists.strath.ac.uk
> >> > Subject: [esp-r] CFD problem
> >> >
> >> > Hello all
> >> >
> >> > I have a modeled a single room with 2 opposite windows/openings I
> >> > have
> >>
> >> to
> >>
> >> > give pressure inlet and pressure outlet for the first case and
> >>
> >> velocity
> >>
> >> > inlet and velocity outlet for the second case now the problem is
> >> > when
> >>
> >> I
> >>
> >> > use CFD interface it asks for, in the case of pressure BCs inlet
> >> > and outlet pressure and in the case of velocity BCs inlet and
> >> > outlet
> >>
> >> velocity
> >>
> >> > but these are constant values and I want to run a transient case
> >> > which uses the weather data file to calculate the pressure inlet
> >> > and outlet
> >>
> >> and
> >>
> >> > velocity inlet and outlet boundary conditions what should I do?
> >> > should use the airflow conflation with CFD.
> >> >
> >> > Regards
> >> >
> >> > Nalin
> >> >
> >> > _______________________________________________
> >> > esp-r mailing list
> >> > esp-r at lists.strath.ac.uk
> >> > http://lists.strath.ac.uk/mailman/listinfo/esp-r
> >>
> >> _______________________________________________
> >> esp-r mailing list
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> >
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-- 
Dr Aizaz A Samuel
Research Fellow
Department of Mechanical Engineering
University of Strathclyde
M324 James Weir Building
75 Montrose Street
Glasgow, UK
G1 1XJ

T:+44 141 548 5765
F:+44 141 552 5105