A Method of Error Estimation and Parameter Adaptive Adjustment Suitable for Implicit Projection Algorithm
An implicit projection algorithm and self-adaptive adjustment technology, applied in special data processing applications, computing, electrical digital data processing, etc., can solve problems such as large time fluctuations, large simulation errors, affecting simulation calculation efficiency, and achieve reliable development. , the effect of improving the applicability
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[0088] In this example, when the internal integrator of the implicit projection algorithm adopts the explicit improved Euler method, according to the absolute stability condition, the numerical stability domains of the implicit projection algorithm in the hλ plane under different parameters are respectively obtained, as shown in the attached figure 2 And attached image 3 shown. It can be seen that the numerical stability domain of the implicit projection integration algorithm is basically the same as that of the improved Euler method, and does not change significantly with the change of the step size multiple M of the external integrator, so it can be considered that the numerical stability of the implicit projection algorithm is The domain is basically uncorrelated with its algorithm parameter M value.
[0089] This example realizes a kind of error estimation and parameter self-adaptive adjustment method suitable for the implicit projection algorithm proposed by the presen...
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