Proceedings of the Indian Academy of Sciences - Section A

, Volume 85, Issue 5, pp 351-366

First online:

Effect of viscosity on internal waves from a source in a wall

  • A. Ramachandra RaoAffiliated withDepartment of Applied Mathematics, Indian Institute of Science
  • , K. C. BalanAffiliated withOil and Natural Gas Commission

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The solution for a line source of oscillatory strength kept at the origin in a wall bounding a semi-infinite viscous imcompressible stratified fluid is presented in an integral form. The behaviour of the flow at far field and near field is studied by an asymptotic expansion procedure. The streamlines for different parameters are drawn and discussed. The real characteristic straight lines present in the inviscid problem are modified by the viscosity and the solutions obtained are valid even at the resonance frequency.