Archived OpenModelica forums. Posting is disabled.

Alternative forums include GitHub discussions or StackOverflow (make sure to read the Stack Overflow rules; you need to have well-formed questions)


Forgot password? | Forgot username? | Register
Page Start Prev 1 Next End

How to change assign heat transfer coefficient of dynamic pipe

#502  Permalink Top

How to change assign heat transfer coefficient of dynamic pipe

Aug-30-10 17:51:39

Hi,

i'm a new modelica user and need to work with dinamic pipes of standard fluid library.
With the dynamic pipe it is possible to assign heat transfer coefficient k as a parameter.

But i would like to change this value by a calculation.

Here is  minimal example:

Code:


model Test

  replaceable package Medium = 

      Modelica.Media.Water.ConstantPropertyLiquidWater;

  Modelica.Fluid.Pipes.DynamicPipe pipe(

    redeclare package Medium = Medium,

    length=100,

    diameter=0.1,

    use_HeatTransfer=true,

    redeclare model HeatTransfer = 

        Modelica.Fluid.Pipes.BaseClasses.HeatTransfer.IdealFlowHeatTransfer (

          k=10)) ;

  

  Modelica.Fluid.Sources.MassFlowSource_T boundary(nPorts=1, redeclare package

      Medium = Medium) ;

  Modelica.Fluid.Sources.Boundary_pT boundary1(nPorts=1, redeclare package

      Medium = Medium) ;

  inner Modelica.Fluid.System system ;

equation 



pipe.heatTransfer.k = 300;  



  connect(pipe.port_b, boundary1.ports[1]);

  connect(boundary.ports[1], pipe.port_a);

end Test;

The line with "pipe.heatTransfer.k = 300;  " do not work.
So is it possible to caculate a value and assign it during a simulation?

Thank you

Edited by: satart - Aug-30-10 17:52:00
#550  Permalink Top

Re: How to change assign heat transfer coefficient of dynamic pipe

Oct-08-10 18:51:49

Modelica.Media and Modelica.Fluid do not work yet in OpenModelica, so I assume you use another tool.
You should ask this question to the tool vendor for the Modelica tool you are using.

Cheers,
Adrian Pop/

Page Start Prev 1 Next End
Previous topic
Next topic
There are 0 guests and 0 other users also viewing this topic
You are here: