This is a combination of the implicit Backward Euler method and the explicit Forward Euler method. It is a single-step implicit method, which needs one model calculation per time step. With the parameter alpha the combination is defined:
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|
alpha |
combination |
|
|
|
-1 |
100% Forward Euler |
explicit |
|
|
0 |
50% Forward Euler, 50 % Backward Euler |
explicit |
|
|
1 |
100% Backward Euler |
implicit |
Step Size: the step time of the integration algorithm (default: 0.01).
Relative Tolerance: Relative tolerance for the rootfinding in the Backward Euler method.
Alpha: Choose between Forward Euler (alpha = -1), Trapezoidal (alpha = 0) and Backward Euler (alpha = 1).