plugin-modelica's Introduction

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, ...

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