localOdeIntegrator (1d, 2d, 3d)

The localOdeIntegrator is used to integrate a Algebraic Equations and evaluates a set of input nodalArrays and stores the ouput in one or more user-specified nodalArrays. The number of inputs and outputs are defined by the kind of Algebraic Equations being used for the Equation.


in (string vector, required)
Inputs 1 to N are nodalArrays which will be supplied to the source through the Equation block.
out (string vector, required)
Outputs 1 to N are nodalArrays which will contain the output of the Source.


relativeErrorTolerance (float)
The allowable error.
Integration scheme to use. Allowable types are bulirschStoer, rk5 and rosenbrock. The integrations schemes are described in the boost, odeint library.


Defines the kind of source being solved. Equation in this case is actually a kind of Algebraic Equations. If multiple <Equation> blocks are defined then the results are added together to produce the output.


The following code block demonstrates the usage of the`localOdeIntegrator combined with the exprHyperSrc source:

<Updater integrator>
  kind = localOdeIntegrator1d
  integrationScheme = bulirschStoer
  onGrid = domain

  relativeErrorTolerance = 0.1

  in = [q]
  out = [qnew]

  <Equation gravity>
   kind = exprHyperSrc
   indVars = ["a","b"]
   exprs = ["-x*b","x*a"]