I've been attempting to use ThermoFluid in OpenModelica http://sourceforge.net/projects/thermofluid/files/, but whilst I've been able to open .mo files and view the code, I don't get the schematic model icons with ports. 

Does anyone know if it's possible to use ThermoFluid in this way in OpenModelica and if so, how I ought to go about it?

I've plotted a graph for which the y axis range is 0 to 1.  Firstly I'd like to know how to change this range, as well as the interval at which labels occur.

Secondly I would like to know where I should look (other than this site if there is somewhere more fitting as my first reference point) to find answers to such questions.  I don't know if they are answered in the OpenModelica User Guide.  I didn't notice any such answers when I scanned through it earlier.  If they're not covered in the User Guide and there is somewhere which would be more appropriate to go to find these sorts of answer, could you please let me know where?

That's brilliant: thanks.

After clicking 'Simulate' on a new model, the following warning appeared:

[:0:0-0:0] Warning: The initial conditions are not fully specified. Use +d=initialization for more information.

I would like to know exactly how I might '[use] +d=initialization for more information.'  Presumably I need to type this somewhere, but where?

I would also like to know how to specify fully the initial conditions for the model (the code for which is posted below, which I copied from a video tutorial here https://www.youtube.com/watch?v=fHA0U8l … r_embedded) so as to avoid receiving this warning:

model Pendulum

 

  parameter Real M = 1;

  // Mass of pendulum

  parameter Real L = 1;

  // Length of pendulum

  parameter Real g = 9.81;

  // Acceleration of gravity

  Real u;

  // Input torque

  Real y;

  // Output angular displacement

  Real x1(start = 1);

  // Pendulum angular displacement

  Real x2(start = 0);

  // Pendulum angular velocity

equation

  der(x1) = x2;

  der(x2) = (u - M * g * L * sin(x1)) / (M * L ^ 2);

  y = x1;

  u = 0;

  

end Pendulum;

I've found the answer: the box I was after is here: Simulation > Simulation Setup

When watching a tutorial on OpenModelica, the author of the video tutorial was able to specify the duration of a simulation in a box which appeared immediately after clicking Simulate.  No such box appeared for me.  It seems that I have a newer version, which doesn't function in the same way.  I am using OpenModelica-revision-19519, which I downloaded the day before yesterday (10/03/2014).

I have created a new model and run a simulation which has a default duration of 1 second. Now I wish to know how to do 3 things, which I have not been able to work out how to do yet:

1. Specify the duration before a new simulation of a new model is run for the first time.

2. Run a new simulation of the same model for a longer period of time (say 10 seconds).

3. Change a parameter in the existing model, specify the duration and then run a simulation of this modified model,

What I've tried:

1. I've spent some time searching the OpenModelica User Guide and http://www.mail-archive.com/openmodelic … da.liu.se/ and exploring OMEdit.

2. In trying to accomplish the second step, I've tried switching back to the Modelling Tab and clicking Check Model followed by Simulate. This produces the same results as my first simulation, since there's no option to change the duration.

3. In trying to achieve the third goal, I tried switching back to the Modelling Tab, changing the parameter and then clicking Check Model followed by Simulate.  Once again, there was no option to alter the duration, as there was in the video tutorial I wrote of.