Finite Element Solution in Fluid Mechanics Using Exponential Function Based Interpolation

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Abstract:

The wave problem of finite element solution of one dimensional stationary convection diffusion equation is analyzed. The reason for wave is the poor continuity of linear Lagrange shape function. By using exponential function based interpolation (EFBI), the results of finite element solution are compared with that of the analytical solution. The results indicate that EFBI is effective to deal with the problem of numerical wave. The shape function of three dimensional EFBI is derived and analyzed. Morphological analysis shows that EFBI has good differentiability and adaptability.

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3051-3056

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July 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] Qian Ruojun, Yuan Xingfei, Lin Zhibin, The analysis theory and finite element method for solid and structure, Southeast University Press, 2013(In Chinese).

Google Scholar

[2] Wang Xucheng, Finite element method, Tsinghua University Press, 2003(In Chinese).

Google Scholar

[3] Zienkiewicz O.C. & Taylor R. L., The Finite Element Method for Fluid Dynamics (5th edn)[M], Elsevier: Amsterdam, 2000: 79-105.

Google Scholar

[4] Ted Belytschko, Wing Kam Liu & Brian Moran. Nonlinear Finite Elements for Continua and Structures[M]. NY, John Wiley & Sons Ltd., (2000).

Google Scholar

[5] Hughes, T.J. and A. Brooks, A multidimensional upwind scheme with no crosswind diffusion. Finite element methods for convection dominated flows, AMD, 1979. 34: pp.19-35.

Google Scholar

[6] Hughes T. J. R. & Brooks A. N., A theoretical framework for Petrov-Galerkin methods with discontinuous weighting function, in Finite Elements in Fluids (eds R.H. Gallagher et al. )[J], Wiley, Chichester, 1982, Vol. 4: 47-65.

Google Scholar

[7] Nithiarasu P., Codina R. & Zienkiewicz O. C., The Characteristic-Based Split (CBS) scheme—a unified approach to fluid dynamics[J]. Numerical Methods in Engineering, 2006, Vol. 66: 1514-1546.

DOI: 10.1002/nme.1698

Google Scholar

[8] Fang Shaowen, Yuan Xingfei, Qian Ruojun, Numerical Wave of Finite Element Solution in Fluid Mechanics Using Different Interpolation Function, Engineering mechanics[J], 2013, 30(11): 266-272(In Chinese).

Google Scholar