Developing an equation-based model - English

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OpenModelica Tutorials - English

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The simulation process failed. Exited with code 0xffffffffffffffff
I have a question about what is happening in this video at 00:08:48 -http://www.youtube.com/watch?v=FptCa8bplhY#t=528s.The simulation process failed. Exited with code 0xffffffffffffffff. please clarify this problem.I am using Version 1.21Thanks!
07-08M 40-50S

Answer last updated on: Jan. 16, 2024, 2:02 p.m.
Data Regression
Hi do we have any solver which can do regression analysis and provide the values of constants. e.g. Pin = a+ hin*b + c*hout; Pout = d + hin*e + f*hout; And we have various values of hin , hout, Pin and Pout. Can we regress it and get the values of a, b, c, d , e, f. Please note that Excel does have in bulit solver for that. Thanks Ashish
03-04M 10-20S ashishmanimishra@gmail.com

Answer last updated on: Feb. 5, 2020, 11:51 a.m.

Outline:

Defining different Perspectives Defining Libraries Browser Defining different View icons Creating a new Modelica class Variable and Parameter declaration Defining Start and Unit attribute Defining min and max attribute Defining Comments Declaration of equations Using Simulation Setup button Specifying Stop Time Correcting errors in Messages browser