Pressure gradient effect in natural convection boundary layers
نویسندگان
چکیده
منابع مشابه
Constant adverse pressure gradient turbulent boundary layers
Significant progress has been made towards understanding the large scale features of wall-bounded shear flow in zero pressure gradient (ZPG) turbulent boundary layers (TBL). Here we consider their effects in adverse pressure gradient (APG) flows where the pressure gradient parameter is held constant and Reynolds number is varied. This is done by documenting the changes in the mean velocity, str...
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H. Salt, Transient conduction in two-dimensional composite slab--I. Theoretical development of temperature modes, ht. J. Heat Mass Transfer 26, 1611-1616 (1983). H. Salt, Transient conduction in two-dimensional composite slab--II. Physical interpretation of temperature modes, ht. J. Heat Mass Transfe 26,1617-1623 (1983). M. D. Mikhailov, General solutions of heat equation in finite regions. ht....
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The temperature, velocity, and concentration distributions were measured in boundary layers adjacent to heated vertical polymethyl methacrylate (PMMA) and wood (Southern Pine) surfaces, and next to a heated, vertical, sintered bronze plate through which propane was injected. The temperature, velocity, and concentration were measured as functions of position and time using thermocouple probes, f...
متن کاملA parametric study of adverse pressure gradient turbulent boundary layers
There are many open questions regarding the behaviour of turbulent boundary layers subjected to pressure gradients and this is confounded by the large parameter space that may affect these flows. While there have been many valuable investigations conducted within this parameter space, there are still insufficient data to attempt to reduce this parameter space. Here, we consider a parametric stu...
متن کاملEvolution of zero pressure gradient turbulent boundary layers
The streamwise evolution of a turbulent boundary layer (TBL) developing under constant pressure on a smooth wall is considered. The closure problem is described for the zero pressure gradient (ZPG) flow where the only assumptions made are the use of classical similarity laws, such as Prandtl’s law of the wall and Coles’[1, 2] law of the wake, together with the mean continuity and mean momentum ...
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ژورنال
عنوان ژورنال: Physics of Fluids A: Fluid Dynamics
سال: 1993
ISSN: 0899-8213
DOI: 10.1063/1.858757