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Fluid motion inside a spinning nutating cylinder

Published online by Cambridge University Press:  20 April 2006

Harold R. Vaughn
Affiliation:
Aeroballistics Division 1631, Sandia National Laboratories, Albuquerque, New Mexico 87185
William L. Oberkampf
Affiliation:
Aeroballistics Division 1631, Sandia National Laboratories, Albuquerque, New Mexico 87185
Walter P. Wolfe
Affiliation:
Aeroballistics Division 1631, Sandia National Laboratories, Albuquerque, New Mexico 87185

Abstract

The incompressible three-dimensional Navier–Stokes equations are solved numerically for a fluid-filled cylindrical cannister that is spinning and nutating. The motion of the cannister is characteristic of that experienced by spin-stabilized artillery projectiles. Equations for the internal fluid motion are derived in a non-inertial aeroballistic coordinate system. Steady-state numerical solutions are obtained by an iterative finite-difference procedure. Flow fields and liquid induced moments have been calculated for viscosities in the range of 0.9 × 104−1 × 109 cSt. The nature of the three-dimensional fluid motion inside the cylinder is discussed, and the moments generated by the fluid are explained. The calculated moments generally agree with experimental measurements.

Information

Type
Research Article
Copyright
© 1985 Cambridge University Press

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