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Journal of Scientific Computing

Erschienen in:

01.10.2020

Optimization Modeling and Simulating of the Stationary Wigner Inflow Boundary Value Problem

verfasst von: Zhangpeng Sun, Wenqi Yao, Tiao Lu

Erschienen in: Journal of Scientific Computing | Ausgabe 1/2020

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Abstract

The stationary Wigner inflow boundary value problem (SWIBVP) is modeled as an optimization problem by using the idea of shooting method in this paper. To remove the singularity at \(v=0\), we consider a regularized SWIBVP, where a regularization constraint is considered along with the original SWIBVP, and a modified optimization problem is established for it. A shooting algorithm is proposed to solve the two optimization problems, involving the limited-memory BFGS (L-BFGS) algorithm as the optimization solver. Numerical results show that solving the optimization problems with respect to the SWIBVP with the shooting algorithm is as effective as solving the SWIBVP with Frensley’s numerical method (Frensley in Phys Rev B 36:1570–1580, 1987). Furthermore, the modified optimization problem gets rid of the singularity at \(v=0\), and preserves symmetry of the Wigner function, which implies the optimization modeling with respect to the regularized SWIBVP is successful.

Vorheriger Artikel On Boundary-Value Problems for RANS Equations and Two-Equation Turbulence Models

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Titel: Optimization Modeling and Simulating of the Stationary Wigner Inflow Boundary Value Problem
verfasst von: Zhangpeng Sun
Wenqi Yao
Tiao Lu
Publikationsdatum: 01.10.2020
Verlag: Springer US
Erschienen in: Journal of Scientific Computing / Ausgabe 1/2020
Print ISSN: 0885-7474
Elektronische ISSN: 1573-7691
DOI: https://doi.org/10.1007/s10915-020-01338-2

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