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Hydrodynamic stability of thin liquid films flowing down an inclined plane with accompanying heat transfer and interfacial shear
Author(s) -
Yih SiuMing,
Seagrave Richard C.
Publication year - 1978
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690240506
Subject(s) - perturbation (astronomy) , isothermal process , thermodynamics , mechanics , heat transfer , shear flow , shear (geology) , inclined plane , hydrodynamic stability , chemistry , viscosity , linear stability , materials science , composite material , instability , physics , turbulence , quantum mechanics , reynolds number
Abstract An analysis is made on the influence of heat transfer and interfacial shear on the hydrodynamic stability of thin liquid films flowing down an inclined plane. The linear stability of the flow is determined by a successive perturbation solution of the governing Orr‐Sommerfeld equation modified to include the effects of temperature on viscosity. Stability criteria are presented which show that a cooled wall is destabilizing, while a heated wall is stabilizing. The surface perturbation stresses of the concurrent gas shear are also shown to be destabilizing factors. Neutral stability curves are presented and compared with the isothermal case.