Two-fluid jets and wakes

Andrzej Herczynski, Patrick D. Weidman, Georgy I. Burde

    Research output: Contribution to journalArticlepeer-review

    15 Scopus citations


    Similarity solutions for laminar two-fluid jets and wakes are derived in the boundary-layer approximation. Planar and axisymmetric fan jets as well as classical and momentumless planar wakes are considered. The interface between the immiscible fluids is stabilized by the action of gravity, with the heavier fluid, taken to be a liquid, placed beneath the lighter fluid. Velocity profiles for the jets and the classical wake depend intimately, but differently, on the parameter χ = ρ1μ12μ2, where ρi and μi are, respectively, the density and absolute viscosity of the fluid in the upper (i = 1 ) and lower (i = 2) fluid domains, while the momentumless wake profile depends on the parameter Ω = planar jet and the momentumless wake become flat in the particular case μ1 = μ2. Velocity profiles illustrating the strongly asymmetrical jet and wake profiles that arise in air-over-water, oil-over-water, and air-over-oil flows are presented.

    Original languageEnglish
    Pages (from-to)1037-1048
    Number of pages12
    JournalPhysics of Fluids
    Issue number4
    StatePublished - 1 Jan 2004

    ASJC Scopus subject areas

    • Computational Mechanics
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering
    • Fluid Flow and Transfer Processes


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