Results 51 to 60 of about 120,825 (217)

Moving computational multi-domain method for modelling the flow interaction of multiple moving objects

open access: yesAdvances in Aerodynamics, 2022
This study proposes a method for modelling the flow interaction of multiple moving objects where the flow field variables are communicated between multiple separate moving computational domains.
Momoha Nishimura   +4 more
doaj   +1 more source

The possible mechanism for a frequency shift by a time-varying of medium features

open access: yesJournal of Telecommunications and Information Technology, 2000
The optical frequency shift of an electromagnetic wave reflecting from a boundary of a medium is studies for two cases: for temporal variations of medium permittivity, and for a moving plasma boundary. It has been shown that a simultaneous occurrence of
Aleksander G. Nerukh, Marian Marciniak
doaj   +1 more source

Effect of quadratic pressure gradient term on a one-dimensional moving boundary problem based on modified Darcy's law

open access: yes, 2016
A relatively high formation pressure gradient can exist in seepage flow in low-permeable porous media with a threshold pressure gradient, and a significant error may then be caused in the model computation by neglecting the quadratic pressure gradient ...
刘文超   +5 more
core   +1 more source

A numerical method for a stefan-type problem

open access: yesMathematical Modelling and Analysis, 2011
A Stefan-type problem is considered. This is an initial-boundary value problem on a composite domain for a parabolic reaction-diffusion equation with a moving interface boundary.
G. Shishkin, L. Shishkina, K. Cronin
doaj   +1 more source

Diffraction by a half-plane in a moving fluid

open access: yes, 2005
In the following work we solve the problem of the diffraction of a plane sound wave by an impedance half-plane in a moving fluid. Expressions for the total far field are derived for both the leading edge and trailing edge situations. In the trailing edge
Rawlins, AD, Barton, PG
core   +1 more source

Radial Basis Function–Finite Difference Solution Combined with Level-Set Embedded Boundary Method for Improving a Diffusive Logistic Model with a Free Boundary

open access: yesAxioms
In this paper, we propose an efficient numerical method to solve the problems of diffusive logistic models with free boundaries, which are often used to simulate the spreading of new or invasive species.
Chunyan Zhang, Yuanyang Qiao
doaj   +1 more source

A method for solving moving boundary problems in heat flow Part I: Using cubic splines

open access: yes, 1972
A new approach to a heat-flow problem involving a moving boundary makes use of a grid system which moves with the boundary. The necessary interpolations are performed by using cubic splines.
Gupta, R, Crank, J
core  

On the weak solution of moving boundary problems

open access: yes, 1978
The weak formulation of moving boundary problems with possibly vanishing specific heat, that is governed by parabolic and/or elliptic differential equations, is developed. The uniqueness of the resulting weak solution is then proved.
Crowley, AB
core  

An augmented method for free boundary problems with moving contact lines

open access: yes, 2010
An augmented immersed interface method (IIM) is proposed for simulating one-phase moving contact line problems in which a liquid drop spreads or recoils on a solid substrate. While the present two-dimensional mathematical model is a free boundary problem,
Lai MC, Zhao HK, Li ZL, 何国威
core   +1 more source

Concerning marginal singularities in the boundary-layer flow on a downstream-moving surface

open access: yes, 1996
The formation of separation singularities in solutions of the classical boundary-layer equations is studied numerically and analytically for the case of a two-dimensional incompressible steady flow near a solid surface moving in the direction of the main
Timoshin, SN
core  

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