Funz plugin: Modelica

This plugin is dedicated to launch Modelica calculations from Funz. It supports the following syntax and features:

• Input

  • file type supported: *.R, any other format for resources
  • parameter syntax:
    • variable syntax: $[...]
    • formula syntax: @{...}
    • comment char: *
  • example input file:

    // @ref http://book.xogeny.com/behavior/equations/physical/
    model NewtonCooling "An example of Newton's law of cooling"
      parameter Real T_inf=25 "Ambient temperature";
      parameter Real T0=90 "Initial temperature";
      parameter Real h=$(convection~0.7) "Convective cooling coefficient";
      parameter Real A=1.0 "Surface area";
      parameter Real m=0.1 "Mass of thermal capacitance";
      parameter Real c_p=1.2 "Specific heat";
      Real T "Temperature";
    initial equation
      T = T0 "Specify initial value for T";
    equation
      m*c_p*der(T) = h*A*(T_inf-T) "Newton's law of cooling";
    end NewtonCooling;
    

    • will identify input:
      • convection, expected to have default value 0.7

• Output

  • file type supported: *_res.csv
  • read tima and any Real value declared
  • example output file:

    "time","T","der(T)"
    0,90,-270.8333333333334
    0.002,89.46058279809098,-268.5857616587124
    0.004,88.92563452032816,-266.3568105013674
    0.006,88.39509750379689,-264.1462395991537
    0.008,87.86896765991509,-261.9540319163129
    0.01,87.34710940753673,-259.779622531403
    0.012,86.82954766895662,-257.6231152873193
    0.014,86.31629194031989,-255.4845497513329
    0.016,85.80734222162654,-253.3639259234439
    0.018,85.30231030402804,-251.2596262667835
    0.02,84.80131576576396,-249.1721490240165
    0.022,84.30443157481071,-247.101798228378
    0.024,83.81165773116827,-245.0485738798678
    0.026,83.32299423483667,-243.0124759784861
    ...
    

    • will return output:
      • time=[0, 0.002, 0.004, 0.006, 0.008, 0.01, 0.012, 0.014, ...
      • T=[90.0,89.46058279809098,88.92563452032816,88.39509750379689, ...