Global ETD Search
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Showing 1 to 7 of 7 for “"turbulence length scale"”.
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Effects of Freestream Turbulence, Turbulence Length Scale, and Reynolds Number on Turbine Blade Heat Transfer in a Transonic Cascade
… investigates the effect of high freestream turbulence intensity, turbulence length scale, and exit Reynolds number on the surface heat transfer distribution of a turbine blade at realistic engine Mach numbers. Passive turbulence grids were used to generate freestream turbulence levels of 2%, …
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Effects Of Large-Scale Free Stream Turbulence On A Turbulent Boundary Layer
… there are systematic variations of free stream turbulence above a flat plate boundary layer are presented. Upstream of the plate, an active grid generates free stream turbulence varying in intensity from 0.25% to 10.5%. The momentum thickness Reynolds number of the boundary layer varies from 550 …
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The effects of forebody strakes on asymmetric vortices on a vertically launched missile
… were investigated. The flowfield with a turbulence length scale on the order of the vortex scale was found to have no significant influence on the induced side forces and yawing moments. The change of body configuration had no strong effects on the side forces and yawing moments either. …
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Agricultural spray droplet dispersion in turbulent windflow
… from background review as matching the full-scale logarithmic man velocity profile with suitable surface roughness parameters. A general calculation scheme is presented for spacing horizontal flat plates to simulate weakly-sheared mean velocity profiles. Adequate full-scale matching of …
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An investigation of drone propeller noise generation in a turbulent wake
… the wake of the strut. The mean velocity, turbulence intensity, velocity spectra and turbulence length scale are calculated to characterise the turbulence ingested by the propeller. Acoustic measurements have been taken with multiple microphones to study the sound directivity and noise …
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Showerhead Film Cooling Performance of a Turbine Vane at High Freestream Turbulence in a Transonic Cascade
… of the airfoil film cooling system on an engine scale is a key as increasing the amount of coolant supplied yields a cooler airfoil that will last longer, but decreases engine core flow—diminishing overall cycle efficiency. Interestingly, when contemplating the physics of film cooling, …
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An Experimental Investigation of Unsteady Surface Pressure on Single and Multiple Airfoils
… of measurements made on an airfoil immersed in turbulence and comparisons with inviscid theory are presented with the goal of determining the effect of angle of attack on an airfoils inviscid response. Unsteady measurements made on the surface of a linear cascade immersed in periodic flow are …