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A Study of Two Dimensional Unsteady MHD Free Convection Flow over a Vertical Plate

Open Journal of Fluid Dynamics 2020年第4期10卷 342-355页

作者： Absana Tarammim Mohammad Sharif Ullah Mohammed Jahir Uddin Department of Mathematics FENI UNIVERSITY Feni Bangladesh Department of Mathematics Chittagong University of Engineering and Technology (CUET) Chittagong Bangladesh Department of Mathematics Bangladesh University of Engineering and Technology (BUET) Dhaka Bangladesh Department of Mathematics Feni Government College Feni Bangladesh

In this paper, unsteady free convection heat transfer flow over a vertical plate in the presence of a magnetic field is discussed in detail. The dimensionless partial differential equations of continuity, momentum along energy are analyzed with suitable transformations. For numerical calculation, an implicit finite difference method is applied to solve a set of nonlinear dimensionless partial differential equations. Dimensionless velocity and temperature profile are also investigated due to the effects of assumed parameters in the concerned problem. An explicit finite difference technique is used to compute velocity and temperature profiles. The stability conditions are also examined.

关键词： Free Convection Heat Transfer Flow Magnetic Field explicit finite difference method

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The Effect Analysis of Topography on the Spectrum Properties of Anti-Plane Movement

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Earthquake Research in China 2008年第1期22卷 31-41页

作者： Rong Mianshui Li Xiaojun Institute of Crustal Dynamics China Earthquake Administration Beijing 100085 China Institute of Engineering Mechanics China Earthquake Administration Harbin 150080 China

An explicit finite difference method is performed to evaluate the significance of topography effects on the seismic response of viscoelastic *** real accelerograms and bell-shape impulse wavelets,slope angle of cliff and angle of incidence on the spectrum property of the incoming waves are all discussed in *** conclusions show that the presence of topographic factors and the direction of the incident waves not only significantly affect the peak ground acceleration of a site,but also affect the spectrum properties of the incoming waves,and the effect on the direction of the incident waves is especially *** study also finds that it is reasonable to analyse spectrum properties with the input of impulse wavelets in the finite element simulation of wave motion.

关键词： explicit finite difference method Viscoelastic site finite element simulation ofwave motion Topography effect

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