Browsing by Subject "boundary layer"
Now showing items 1-12 of 12
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(2016-12-13)Parasitic drag is a restrictive force for all vehicles moving through a fluid medium. In many industries and applications, even incremental reductions in drag could result in large savings in fuel, time, and even thermal ...
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(2022-08-23)Spatial BiGlobal (SBG) theory was used to study boundary-layer transition on a hypersonic finned cone. A new solver, BLAST, has been developed to apply the equations in a nonorthogonal manner, which extends its applicability ...
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(2013-08-05)High-resolution particle image velocimetry (PIV) is employed to resolve the velocity fields within a Mach 4.9 mechanically distorted turbulent boundary layer (Reθ ≈ 40,000). The goal of this study is to directly observe ...
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(2023-06-01)A primary challenge inhibiting hypersonic flight is the inability of current methods to adequately predict the thermal loading in hypersonic flight. Key to solving this problem is understanding the boundary layer around ...
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(2012-08-23)Laminar flow control holds major promise for increasing aircraft efficiency and increasing laminar flow over aerodynamic surfaces could decrease drag by up to 30 percent. The Flight Research Lab at Texas A&M University has ...
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(2013-01-15)Skin friction drag reduction is one of the most promising paths in the investigation of the reduction of aircraft fuel burn. 40 – 50% of overall drag comes from the surfaces of the wings and stabilizers. Natural laminar ...
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(2013-05-15)The purpose of the current study was to answer several questions related to hypersonic, low Reynolds number, turbulent boundary layers, of which available data related to turbulence quantities is scarce. To that end, a ...
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(2019-01-08)Hypersonics is of current national interest, but improved understanding of fundamental flow physics is required for safe and efficient vehicle design. The objective of the present study was to expand the knowledgebase of ...
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(2012-07-11)Atmospheric opacity, otherwise known as optical depth, is the measurement of the amount of radiation reaching the surface through the atmosphere. The spatial and temporal patterns in optical depth tell us about the aerosol ...
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(2022-03-28)The Air Force Research Laboratory/Air Force Office of Scientific Research (AFRL/AFOSR) introduced the Boundary Layer Turbulence (BOLT II) flight experiment to advance the understanding and modeling of naturally occurring ...
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(Texas A&M University, 2007-04-25)Previous studies have shown that favorable pressure gradients reduce the turbulence levels and length scales in supersonic flow. Wall roughness has been shown to reduce the large-scales in wall bounded flow. Based on these ...
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(2022-07-06)Improved modeling of hypersonic turbulent shear layers is of national interest. The Reynolds numbers experienced preclude widespread use of high fidelity simulations, and the complexity of the flow is not captured by simpler ...