DASSLDifferential Algebraic System Solver
DASSLDemonstration of Advanced Solid State LADAR
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Compared with the Radau IIa solver, the DASSL solver yields slightly better results in terms of the quality of smoothness.
As DASSL functions better with smooth changes, the two stress constants B and F were increased from zero to finite values by using the switching functions
DASSL was able to converge consistently, even with [[tau].
To verify the accuracy of the steady-state results obtained by our finite difference code, the steady-state results were computed by two methods: 1) the transient finite difference code was run for sufficiently long time to reach steady-state, and 2) the ordinary differential equations obtained by setting the time derivatives in Eqs 1 to 5 to zero and algebraically decoupling the spatial derivatives were directly solved using DASSL.
The MOL consists of a finite-volume discretization along the spatial coordinates and time integration using the DASSL code.
The equations were integrated numerically with the DASSL code.