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DUAL RECIPROCITY HYBRID BOUNDARY NODE METHOD FOR THREE-DIMENSIONAL ELASTICITY WITH body force

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Acta Mechanica Solida Sinica 2008年第3期21卷 267-277页

作者： Fei Yan Yuanhan Wang Yu Miao Fei Tan School of Civil Engineering and Mechanics Huazhong University of Science and Technology Wuhan 430074 China

Combining Dual Reciprocity Method （DRM） with Hybrid Boundary Node Method （HBNM）, the Dual Reciprocity Hybrid Boundary Node Method （DRHBNM） is developed for three-dimensional linear elasticity problems with body force. This method can be used to solve the elasticity problems with body force without domain integral, which is inevitable by HBNM. To demonstrate the versatility and the fast convergence of this method, some numerical examples of 3-D elasticity problems with body forces are examined. The computational results show that the present method is effective and can be widely applied in solving practical engineering problems.

关键词： hybrid boundary node method dual reciprocity method body force radial basis function

EXTERNAL body forceIN FINITE DIFFERENCE LATTICE BOLTZMANN METHOD

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Journal of Hydrodynamics 2005年第4期17卷 473-477页

作者： CHEN Sheng LIU Zhao-hui SHI Bao-chang ZHENG Chu-guang State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan 430074 China

A new finite difference lattice Boltzmann scheme is developed. Because of analyzing the influence of external body force roundly, the correct Navier-Stokes equations with the external body force are recovered, without any additional unphysical terms. And some numerical results are presented. The result which close agreement with analytical data shows the good performance of the model.

关键词： Finite Difference Lattice Boltzmann Method (FDLBM) body force

Dynamic response in two-dimensional transversely isotropic thick plate with spatially varying heat sources and body forces

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Applied Mathematics and Mechanics(English Edition) 2011年第10期32卷 1315-1332页

作者： M.ISLAM S.H.MALLIK M.KANORIA Department of Mathematics St. Xavier's College (Evening) Kolkata 700016 India Department of Mathematics Aliah University Kolkata 700091 India Department of Applied Mathematics University of Calcutta Kolkata 700009 India

This paper deals with a two-dimensional （2D） problem for a transverselyisotropic thick plate having heat sources and body forces. The upper surface of the plate is stress free with the prescribed surface temperature, while the lower surface of the plate rests on a rigid foundation and is thermally insulated. The study is carried out in the context of the generalized thermoelasticity proposed by Green and Naghdi. The governing equations for displacement and temperature fields are obtained in the Laplace-Fourier transform domain by applying the Laplace and Fourier transforms. The inversion of the double transform is done numerically. Numerical inversion of the Laplace transform is done based on the Fourier series expansion. Numerical computations are carried out for magnesium （Mg）, and the results are presented graphically. The results for an isotropic material （Cu） are obtained numerically and presented graphically to be compared with those of a transversely isotropic material （Mg）. The effect of the body forces is also studied.

关键词： generalized thermoelasticity Green-Naghdi model transversely isotropic material spatially varying heat source body force

Simulation of Flow Around Cylinder Actuated by DBD Plasma

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Plasma Science and Technology 2016年第7期18卷 768-774页

作者：王玉玲高超武斌胡旭 National Key Laboratory of Science and Technology on Aerodynamic Design and Research Northwestern Polytechnical University

The electric-static body force model is obtained by solving Maxwell＇s electromagnetic equations. Based on the electro-static model, numerical modeling of flow around a cylinder with a dielectric barrier discharge （DBD） plasma effect is also presented. The flow streamlines between the numerical simulation and the particle image velocimetry （PIV） experiment are consistent. According to the numerical simulation, DBD plasma can reduce the drag coefficient and change the vortex shedding frequencies of flow around tile cylinder.

关键词： dielectric-barrier-discharge plasma body force flow around cylinder

THE NUMERICAL CALCULATION FOR THE STERN FLOW OF THREE DIMENSIONAL SURFACE SHIP WITH MULTI-PRO-PELLERS IN OPERATION

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Journal of Hydrodynamics 1998年第1期10卷 75-85页

作者： Zhou Lian-di, Gao Qiu-xinChina Ship Scientific Research Center P. O. Box 116,Wuxi 214082, P. R. China

In this paper the complex structure and pattern of ship stern flow driven by multi-propellers is simulated numerically by using RANS equations with K turbulence model and propeller lifting surface theory as essential research tool and coupling the computer code of ship stern flow to the computer code of propeller performance prediction through the medium of body force. A ship model with four propellers is selected as the numerical example. Detailed computational results are presented graphically and the qualitative and quantitative analysis is made. Finally,the comparison between the calculated result and the avaikble experimental data is made. The agreement between them is satisfac-

关键词： ship stern flow hull-propeller interaction body force