Advances in the Applications of Nonstandard Finite by Ronald E. Mickens PDF

By Ronald E. Mickens

ISBN-10: 9812564047

ISBN-13: 9789812564047

ISBN-10: 9812703314

ISBN-13: 9789812703316

This quantity offers a concise creation to the technique of nonstandard finite distinction (NSFD) schemes development and indicates how they are often utilized to the numerical integration of differential equations happening within the traditional, biomedical, and engineering sciences. those tools had their genesis within the paintings of Mickens within the 1990's and are actually commencing to be generally studied and utilized via different researchers. the significance of the e-book derives from its transparent and direct clarification of NSFD within the introductory bankruptcy besides a wide dialogue of the longer term instructions had to strengthen the subject.

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Additional info for Advances in the Applications of Nonstandard Finite Difference Schemes

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The KBrmBn-Guderley equation (1) which was the subject of [6] also contains R1, the radial derivatives of the Laplacian in cylindrical coordinates. The first step in the discretization of the R, operator is to choose a grid { r j } E o on the interval 0 5 r 5 1 where 0 c ro < r1 < 7-2 < . . < rj < . . < 7-N = 1. (4) In the subsequent subsections the derivation of the Buckmire MFD scheme for the cylindrical and spherical cases will be given. 1. T h e cylindrical case Consider B ( r ) which is defined as rdu dr where u = u ( r ) is an unknown function (the solution) the operator 721 acts on.

5. 6. 7. 8. 9. ing explicit finite order methods, Journal of Computational and Applied Mathematics 90 (1998), 171-183. R. E. Mickens, Nonstandard Finite Dijjference Models of Dioerential Equations, (World Scientific, Singapore, 1994). A. Serfaty de Markus and R. E. Mickens, Suppression of numerically induced chaos with nonstandard finite difference scheme, Journal of Computational and Applied Mathematics 106 (1999), 317-324. R. E. Mickens, Applications of Nonstandard Finite Difference Schemes, (World Scientific, Singapore, 2000).

17. Changes in the effective step-size, y, using nonstandard scheme I (step-size h = 10s). S i m u l a t i o n S t u d i e s of Robotic S y s t e m s Fig. 18. 001s. 41 42 R. Abo-Shanab, N . Sepehri and C. Q. Wu Time (s) Fig. 19. 001s). (o, using nonstandard scheme I1 (step--size Simulation Studies of Robotic Systems 43 Time (s) 0 1 2 3 4 5 6 7 8 9 10 Time (s) Fig. 20. Comparison between simulation results of tracking errors using small and large values for the step-size h (scheme 11). 44 R. F. Abo-Shanab, N .

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Advances in the Applications of Nonstandard Finite Difference Schemes by Ronald E. Mickens

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