TECHNICAL PAPERS: Natural and Mixed Convection

Linear Stability of Mixed Convection Flow of Two Immiscible Fluids in a Vertical Annulus

[+] Author and Article Information
Kai-Ti R. Chang

M. I. Systems, 1826 W. Broadway Rd. #B43, Mesa, AZ 85202

Kang Ping Chen

Department of Mechanical and Aerospace Engineering, Arizona State University, Tempe, AZ 85287-6106

J. Heat Transfer 123(3), 434-440 (Jan 20, 2001) (7 pages) doi:10.1115/1.1370511 History: Received September 05, 2000; Revised January 20, 2001
Copyright © 2001 by ASME
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Grahic Jump Location
Critical Re of capillary, thermal and shear modes. (a=0.01,b=1.1, transformer oil-water system with density matched, J=1669.6,ΔT̃=20 K) s: stable; u: unstable.
Grahic Jump Location
Effect of temperature-dependent viscosity on the capillary, shear and thermal modes. (solid line: variable viscosity, dotted line: constant viscosity): (a) ΔT̃>0, inner cylinder is hotter than the outer cylinder; and (b) ΔT̃<0, inner cylinder is cooler than the outer cylinder.
Grahic Jump Location
Neutral curves of capillary, shear, and thermal modes with μ(T) at (a) ΔT̃=10 K, (b) ΔT̃=20 K, (c) ΔT̃=40 K, and (d) ΔT̃=80 K. (solid line: thermal mode, dotted line: shear mode, dash-dot-dot line: capillary mode; s: stable; u: unstable)
Grahic Jump Location
Neutral curves of shear and thermal modes with μ(T) at (a) ΔT̃=−10 K, (b) ΔT̃=−20 K, (c) ΔT̃=−40 K, and (d) ΔT̃=−80 K. (solid line: thermal mode, dotted line: shear mode, s: stable, u: unstable)




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