Some Features of Hydrodynamic Instability of a Plane Channel Flow of a Thermoviscous Fluid
| Autor: | A. D. Nizamova, S. F. Urmancheev, V. N. Kireev |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Fluid Flow and Transfer Processes Physics Hydrodynamic stability Mechanical Engineering General Physics and Astronomy Reynolds number Mechanics 01 natural sciences Instability 010305 fluids & plasmas Exponential function Open-channel flow Physics::Fluid Dynamics symbols.namesake Viscosity Flow (mathematics) 0103 physical sciences symbols Compressibility |
| Zdroj: | Fluid Dynamics. 54:978-982 |
| ISSN: | 1573-8507 0015-4628 |
| DOI: | 10.1134/s0015462819070073 |
| Popis: | In this work we study the effect of the exponential temperature dependence of the incompressible fluid viscosity on the critical parameters of the flow hydrodynamic stability in a flat channel at various specified values of the wall temperature. The temperature field perturbations are thought to be absent. The eigenvalue spectra for the generalized Orr-Sommerfeld equation are constructed at sufficiently large Peclet numbers. The spectra structure, neutral stability curves, and the critical Reynolds number are shown to largely depend on the fluid properties that are determined by the exponential viscosity function. |
| Databáze: | OpenAIRE |
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