International Journal of Dynamics of Fluids

  • Year: 2010
  • Volume: 6
  • Issue: 1

Approximate Solution Using Momentum Integral in Estimating the Shear Stress over a Porous Rotating Disk

  • Author:
  • Yazan Taamneh1, Siegfried Ripperger2
  • Total Page Count: 8
  • DOI:
  • Page Number: 17 to 24

1Faculty of Engineering, Department of Mechanical Engineering, Tafila Technical University, P.O. Box 92, 66110, Tafila, Jordan, E-mail: .

2Technische Universität Kaiserslautern, Fachbereich Maschinenbau und Verfahrenstechnik Lehrstuhl für Mechanische Verfahrenstechnik, D- 67663, Kaiserslautern, Germany.

null

Abstract

The Schiele problem in estimating the wall shear stress for a non porous rotating disk in laminar boundary layer regime is revisited. We have used the Schlichting result for flow over a thin plate with uniform suction to approximate the wall shear stress on a rotating disk subject to uniform suction in laminar regime. In this paper the wall shear stresses for porous rotating disk are approximated using the momentum integral approach following the same technique of Schiele for non porous rotating disk. A closed form of wall shear stress for porous rotating disk is presented. The results show clear evidence of tangential wall shear stress increase when suction is applied.

Keywords

Rotating Porous Disk, Boundary Layer, Momentum Integral