Hi,
I think that it would be better to submit the
bugs at the OpenModelica development server
to have them filed for future reference.
However you could also use the openmodelicainterest
list or just send the email directly to me if you
are not sure this is a bug or not.
Cheers,
Adrian Pop/
dieter wrote:
Hi Adrian,
This seems to be a bug. I added it to the CodeBeamer
system we use for project planning and development.
http://openmodelica.ida.liu.se:8080/cb/issue/1012
Shall I submit (possible) bugs there or should I use the
openmodelicainterest mailing list?
Dieter
Cheers,
Adrian Pop/
dieter wrote:
Hi,
I've got strange results with my overall model, even though the isolated
classes seem to work reasonably while testing. Basically I'd like to
simulate a hydraulic circuit, with a pump flow changing in time and
subsequent flow resistances.
I reduced the problem to the following 3 primitive classes:
connector Port
Real pressure;
flow Real flowrate;
end Port;
model Pipe
Port port;
parameter Real a = 1;
equation
port.pressure = port.flowrate * a;
end Pipe;
model Pump
Port port;
equation
port.flowrate = -( time - port.pressure);
end Pump;
//------------------------------
model Test
Pump pu;
Pipe pi;
equation
connect(pu.port,pi.port);
end Test;
// simulate(Test);
Probably I've some severe misconceptions about coupling of the
components because the model does not reproduce the analytical solution:
pi.flowrate = time/(1+a)
Results are basically constant (except for the time variable). There is
only a step change at the last time step!?
Where am I wrong? Without your help, I'm totally stuck now! (I'm using
version 1.4.4 of OM.)
Dieter
--
Best wishes
H. Dieter Wilhelm
Darmstadt, Germany
