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Pressure boundary conditions for immersed-boundary methods
Journal of Computational Physics, 2023Immersed boundary methods have seen an enormous increase in popularity over the past two decades, especially for problems involving complex moving/deforming boundaries. In most cases, the boundary conditions on the immersed body are enforced via forcing functions in the momentum equations, which in the case of fractional step methods may be problematic
Ibrahim Nasuh Yildiran +5 more
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On Nonreflecting Boundary Conditions
Journal of Computational Physics, 1995This paper contributes to the study of nonreflecting boundary conditions at artificial boundaries for use with the Helmholtz equation. The following developments are covered: -- How to remove the difficulties that arise when the exact Dirichlet-to-Neumann condition is truncated?
Grote, Marcus J., Keller, Joseph B.
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Journal of Computational Physics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
R. E. Denton, Y. Hu
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
R. E. Denton, Y. Hu
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THE ‘NO BOUNDARY CONDITION’ OUTFLOW BOUNDARY CONDITION
International Journal for Numerical Methods in Fluids, 1997Summary: We use a one-dimensional model problem of advection-diffusion to investigate the treatment recently advocated by \textit{T. C. Papanastasiou, N. Malamataris} and \textit{K. Ellwood} [Int. J. Numer. Methods Fluids 14, No. 5, 587--608 (1992; Zbl 0747.76039)] to deal with boundary conditions at artificial outflow boundaries. Using finite elements
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An Introduction to Boundary Conditions
1996The aim of this chapter is to introduce the unfamiliar reader to the topic of boundary conditions: we just want to give some insight into this question and do not pretend to give an exhaustive study. We recall first the main features of the initial boundary value problem (I.B.V.P.) before we present the numerical treatment of the question.
Edwige Godlewski, Pierre-Arnaud Raviart
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Boundary conditions in electromagnetics
Physical Review E, 1993A proof is given to show that satisfying the boundary conditions on the tangential electric and magnetic fields across the boundary surface of two different material media means that the boundary conditions on the normal magnetic-induction vector and electric-displacement vector are automatically satisfied while the converse is not true.
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Generalized Boundary Conditions
The Physics of Fluids, 1970The concept of the generalized boundary condition is introduced, and stabilization of ion-sound waves and drift waves using such boundary conditions is demonstrated. The boundary consists of a two-dimensional, lumped-parameter transmission line in electrical contact with the plasma.
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The Psychoanalytic Quarterly, 1999
Boundaries in psychoanalysis and psychotherapy can be considered either as indicators of moral transgressions or as guidelines for therapeutic intervention. This paper suggests that these categories be better delineated in the hope that less attention be paid to that of moral mistakes and more to that of treatment effectiveness.
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Boundaries in psychoanalysis and psychotherapy can be considered either as indicators of moral transgressions or as guidelines for therapeutic intervention. This paper suggests that these categories be better delineated in the hope that less attention be paid to that of moral mistakes and more to that of treatment effectiveness.
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Boundary conditions at grain boundaries
Journal of Applied Physics, 1983Grain boundaries in polycrystalline semiconductor material are frequently idealized as surfaces possessing a characteristic surface recombination velocity. Minority carrier densities generated by external sources (electron beams, light, etc.) in polycrystalline p–n junctions must satisfy certain boundary conditions at these grain boundaries which will ...
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No Classic Boundary Conditions.
2007Abstract{We consider the boundary value problem:8 1x(a) = ̄0¢x(k) ́ x(k)(b) ¡ x(k)(a) = ̄k+1; k = 0; :::;m ¡ 2where x(t) = (x(t); x0(t); ::::; x(m¡1)(t)), ̄i 2 R;i = 0; :::;m ¡ 1, and f is continuous at least in theinterior of the domain of interest. We prove the ex-istence and uniqueness of the solution under certainconditions.
SERPE, Annarosa +2 more
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