Buoyancy effects on flow transition in low-density inertial gas jets | Zendy

Kasyap S. Pasumarthi | Zendy; Ajay K. Agrawal | Zendy

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Buoyancy effects on flow transition in low-density inertial gas jets

Author(s) -

Kasyap S. Pasumarthi,

Ajay K. Agrawal

Publication year - 2005

Publication title -

experiments in fluids

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.01

H-Index - 122

eISSN - 1432-1114

pISSN - 0723-4864

DOI - 10.1007/s00348-005-0927-2

Subject(s) - buoyancy , laminar flow , mechanics , turbulence , jet (fluid) , schlieren , schlieren photography , flow (mathematics) , flow visualization , physics , materials science

Effects of buoyancy on transition from laminar to turbulent flow are presented for a momentum-dominated helium jet injected into ambient air. The buoyancy was varied in a 2.2 s drop tower facility without affecting the remaining operating parameters. The jet flow in Earth gravity and microgravity was visualized using the rainbow schlieren deflectometry apparatus. Results show significant changes in the flow structure and transition behavior with change of buoyancy.

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