A new numerical method for the simulation of three-dimensional flow in a pipe

  • A. Leonard
  • A. Wray
Contributed Papers
Part of the Lecture Notes in Physics book series (LNP, volume 170)


A new numerical method has been developed to investigate three-dimensional, unsteady pipe flows using a new velocity-vector expansion method. Each vector function in the expansion set is divergence-free and satisfies the boundary conditions for viscous flow. Other features of the general technique are as follows: (1) pressure is eliminated from the dynamics; (2) only two unknowns per “mesh point” are required; (3) there is rapid convergence of spectral methods; (4) there is implicit treatment of the viscous term at no extra computational cost; and (5) no fractional time-steps are required. In the present application of the method to flow in a pipe, the behavior of each flow variable near the computational singular point is treated rigorously and expansions in Jacobi polynomials have been shown to be particularly advantageous. The method has been tested on the linear stability problem for Poiseuille flow and has demonstrated rapid convergence of the eigenvalues and eigenfunctions as the number of radial modes is increased.


Poiseuille Flow Jacobi Polynomial Rapid Convergence Radial Mode Turbulent Channel Flow 
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Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • A. Leonard
    • 1
  • A. Wray
    • 1
  1. 1.NASA Ames Research CenterMoffett FieldUSA

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