Topic
Freestream
About: Freestream is a research topic. Over the lifetime, 3428 publications have been published within this topic receiving 56147 citations.
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TL;DR: In this article, the authors describe the simultaneous measurement of time resolved heat flux and local velocity at the surface of a cylinder in cross flow and show that most of the heat transfer fluctuations at the front of the cylinder originate in the small turbulent eddies present in the flow.
68 citations
TL;DR: In this paper, large-eddy simulations of flow over a pitching airfoil are conducted to study the effect of freestream turbulence on the aerodynamic characteristics of wind turbines.
66 citations
TL;DR: In this article, the effect of molecular properties on the thermal measurements of a turbine was analyzed and it was shown that they may be related to the cold air situation in the turbine.
66 citations
12 Jan 1998
66 citations
TL;DR: In this paper, the authors demonstrate effective manipulation of a turbulent boundary layer at Mach 4.7 conditions using a surface dielectric barrier discharge (DBD) actuator and demonstrate that the boundary layer thinning is observed when spanwise momentum is induced by the low power (6.8 W), low frequency (28 kHz) single actuator pair oriented parallel to the freestream flow.
Abstract: We demonstrate effective manipulation of a turbulent boundary layer at Mach 4.7 conditions using a surface dielectric barrier discharge (DBD) actuator. The freestream conditions of low static pressure (1 kPa) and temperature (60 K) are conducive to the visualization of flow features using Rayleigh scattering from condensed CO2 particles. The boundary layer thinning is observed when spanwise momentum is induced by the low power (6.8 W), low frequency (28 kHz) single actuator pair oriented parallel to the freestream flow.
66 citations