Foam::Euler
Euler ODE solver of order (0)1.
The method calculates the new state from: \f[ y_{n+1} = y_n + \delta_x f \f] The error is estimated directly from the change in the solution, i.e. the difference between the 0th and 1st order solutions: \f[ err_{n+1} = y_{n+1} - y_n \f]
Euler.C