Nonlinear Stability of Supersonic Nonparallel Boundary Layer Flows (مقاله لاتین می باشد و فاقد ترجمه می باشد7ص )

Abstract This article studies the nonlinear evolution of disturbance waves in supersonic nonparallel boundary layer flows by using nonlinear parabolic stability equations (NPSE). An accurate numerical method is developed to solve the equations and march the NPSE in a stable manner. Through computation, are obtained the curves of amplitude and disturbance shape function of harmonic waves. Especially are demonstrated the physical characteristics of nonlinear stability of various harmonic waves, in ...

Spatiotemporal structure of wind farm-atmospheric boundary layer interactions(مقاله لاتین می باشد و فاقد ترجمه می باشد7ص )

AbstractObservations and modelling studies show that wind farms can alter their local microclimate. This study examines theeffect of real-world wind farms on land surface temperatures in West Central Texas using the Weather Research andForecasting model under realistic boundary conditions. Three wind turbine parameterizations, including twodeveloped in this study, are used for model sensitivity experiments. The simulated effects of wind farms ontemperatures match the spatial patterns observed i ...

Influencing factors of methane/moist-air laminar boundary layer in micro-channel(مقاله لاتین می باشد و فاقد ترجمه می باشد8ص )

Abstract Aiming at the flow characteristics of methane/moist-air laminar boundary layer in the millimeter micro channels , this paper solved the governing equation by Matlab programming and researched two kinds of micro channels' boundary layer properties under three different conditions.The two micro channels are micro plate and micro circular tube,the spacing between two plates and the diameter of the circular tube are both 1 mm,with the length both 40mm. The influences of air/carbon mole ra ...

Mean Flow Boundary Layer Effects of Hydrodynamic Instability of Impedance Wall (مقاله لاتین می باشد و فاقد ترجمه می باشد9ص )

Abstract The Ingard-Myers condition, modelling the effect of an impedance wall under a mean flow by assuming a vanishing boundary layer, is known to lead to an ll-posed problem in time-domain. By analysing the stability of a mean flow, uniform except for a linear boundary layer of thickness h, in the ncompressible limit, we show that the flow is absolutely unstable for h smaller than a critical hc and convectively unstable or stable otherwise. This critical hc is by nature independent of wave le ...