Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2008

Идентификатор DOI: 10.1063/1.3053827

Ключевые слова: Flow simulation, Fluid dynamics, Gases, Incompressible flow, Laminar flow, Liquid films, Mathematical models, Navier Stokes equations, Reynolds number, Thin films, Capillary waves, Depth ratios, Gas flows, Numerical simulations, Phase speeds, Self similarities, Traveling waves, Valued functions, Velocity profiles, Wave amplitudes, Density of gases

Аннотация: Long nonlinear two-dimensional traveling waves on a liquid film driven by laminar flow of a gas with much smaller density and viscosity are investigated. The gas flow is assumed to be pressure driven. The method of particles for incompressible flow is used to solve Navier-Stokes equations. The influence of layer depth ratio, gas Reynolds number, and wavelength on wave amplitude and phase speed is studied and compared to the corresponding characteristics of gravity-capillary waves. The waves with equal amplitude but different phase speeds have been revealed, i.e., the phase speed of the gas driven waves is not always a single valued function of their amplitude. Self-similarity of velocity profiles in shear driven waves has also been demonstrated. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3053827]

Журнал: PHYSICS OF FLUIDS

Выпуск журнала: Vol. 20, Is. 12

ISSN журнала: 10706631

Место издания: MELVILLE

Издатель: AMER INST PHYSICS

• Frank A.M. (Inst Computat Modeling SB RAS, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660036, Russia)

• Web of Science Core Collection
• Scopus