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Clamping the step-size #8

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ivan-pi opened this issue May 21, 2024 · 0 comments

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ivan-pi commented May 21, 2024

stiff3/src/stiff3_solver.f90

Lines 209 to 210 in 057a699

    
           qa = 1.0_wp/(qa+1.0e-10_wp) 
        
           if (qa > 3.0_wp) qa = 3.0_wp

The step size is controlled by the factor qa (the ratio $h_{i+1}/h_i$), and could be written more succintly as:

qa = 1.0_wp/((4*q)**0.25_wp + eps)
qa = min(qa,3.0_wp)

The text was updated successfully, but these errors were encountered:

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