Unsteady flow of an oscillating porous disk and a fluid at infinity

T. Hayat, S. Asghar, A. M. Siddiqui

Research output: Contribution to journalArticle

19 Scopus citations


An exact analytic solution of the unsteady Navier-Stokes equations is obtained for the flow caused by the non-coaxial rotations of a porous disk and a fluid at infinity. The porous disk is executing oscillations in its own plane with superimposed injection or suction. An increasing or decreasing velocity amplitude of the oscillating porous disk is also discussed. Further, it is shown that a combination of suction/injection and decreasing/increasing velocity amplitude is possible as well. In addition, the flow due to porous oscillating disk and a fluid at infinity rotating about an axis parallel to the z-axis is attempted as a second problem.

Original languageEnglish (US)
Pages (from-to)259-265
Number of pages7
Issue number4
StatePublished - Dec 1 1999


All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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