Applied Mathematics and Mechanics (English Edition) ›› 1992, Vol. 13 ›› Issue (5): 437-444.

• 论文 • 上一篇    下一篇

ACCURATE COMPUTATION AND INTERPOLATION TECHNIQUE OF FINITE ANALYTIC COEFFICIENTS

张世雄   

  1. Institute of Water Conservancy and Hydroelectric Power Research, Beijing
  • 收稿日期:1990-12-21 出版日期:1992-05-18 发布日期:1992-05-18

ACCURATE COMPUTATION AND INTERPOLATION TECHNIQUE OF FINITE ANALYTIC COEFFICIENTS

Zhang Shi-xiong   

  1. Institute of Water Conservancy and Hydroelectric Power Research, Beijing
  • Received:1990-12-21 Online:1992-05-18 Published:1992-05-18

摘要: The finite analytic method (FA) developed in the last decade is an effective numerical method for solving fluid flow problems.However, because of the limitation in the present computer, large round-off errors are found in calculating FA coefficients when Reynolds number is large.This paper investigates the cause of this difficulty and presents a special programming technique in making an accurate computation of FA coefficients.Then a fundamental function known as "Pe" is tabulated by the accurate computation.In practical application the interpolation technique is employed so that the FA coefficients can be obtained reliably and quickly.

关键词: finite analytic coefficients, high Reynolds number, accurate computation, interpolation

Abstract: The finite analytic method (FA) developed in the last decade is an effective numerical method for solving fluid flow problems.However, because of the limitation in the present computer, large round-off errors are found in calculating FA coefficients when Reynolds number is large.This paper investigates the cause of this difficulty and presents a special programming technique in making an accurate computation of FA coefficients.Then a fundamental function known as "Pe" is tabulated by the accurate computation.In practical application the interpolation technique is employed so that the FA coefficients can be obtained reliably and quickly.

Key words: finite analytic coefficients, high Reynolds number, accurate computation, interpolation

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