ON THE SOLUTIONS OF THE DIFFERENTIAL EQUATION Y SUB VI = XY. I. ANALYSIS

Abstract

The differential equation y to the power of vi = xy plays an important role in the asymptotic treatment of the stability of viscous flow between contra-rotating cylinders and, in one limiting case, solutions of this equation are required that remain bounded as x approaches plus infinity. A set of standard solutions have therefore been defined such that three of them, denoted by Ak(x), are bounded as x approaches plus infinity, while the remaining three solutions, denoted by Bk(x), are unbounded as x approaches plus infinity. The contour integral representations of these solutions are given, together with their power-series and asymptotic expansions. It is also shown that a slightly modified set of these solutions provide a ''numerically satisfactory'' set over the entire interval minus infinity is less than x is less than plus infinity.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1963
Accession Number
AD0408289

Entities

People

  • R. L. Duty
  • W. H. Reid

Organizations

  • Brown University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Asymptotic Series
  • Contour Integrals
  • Couette Flow
  • Differential Equations
  • Equations
  • Flow
  • Integrals
  • Military Research
  • Power Series
  • Rhode Island
  • Right Angles
  • Standards
  • Viscous Flow

Fields of Study

  • Mathematics

Readers

  • Calculus or Mathematical Analysis