Numerical Model For Fluid Spin-Up in A Partially-Filled Cylinder.

Abstract

A theoretical investigation is presented for the axisymmetric spin-up of fluid in a partially-filled cylindrical cavity. It is an extension of the earlier analyses of Wedemeyer, and of Goller and Ranov, to those cases where the liquid free surface intersects one or both endwalls. The simplifying assumptions of a columnar flow and the quasi-steady treatment of the Ekman layer pumping of the secondary flow are retained. Earlier estimates of the Ekman layer pumping are modified heuristically for situations where the layer(s) no longer covers the entire wall. Also, due to the very steep free surface contour in the latter stages of spin-up, it was found advantageous to develop the free surface equations in an axial, rather than radical, coordinate frame.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1982
Accession Number
ADA115317

Entities

People

  • Gregory F. Homicz

Organizations

  • Calspan

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Angular Momentum
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Programs
  • Differential Equations
  • Equations
  • Experimental Data
  • Fluid Dynamics
  • Fluid Mechanics
  • Froude Number
  • Liquid Filled Projectiles
  • Mechanics
  • Navier Stokes Equations
  • Reynolds Number
  • Secondary Flow
  • Solid Bodies

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Fluid Dynamics.