Results 81 to 90 of about 208,604 (196)
Progress and challenges in modeling turbulent aerodynamic flows [PDF]
Progress in modeling external aerodynamic flows achieved by using computations and experiments designed to guide turbulence modeling is presented. The computational procedures emphasize utilization of the Reynolds-averaged Navier-Stokes equations and ...
Marvin, Joseph G.
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Modeling of turbulent supersonic H2-air combustion with an improved joint beta PDF [PDF]
Attempts at modeling recent experiments of Cheng et al. indicated that discrepancies between theory and experiment can be a result of the form of assumed probability density function (PDF) and/or the turbulence model employed.
Baurle, R. A., Hassan, H. A.
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MathematicsNumerical simulations were conducted to investigate high-pressure water jets in air. The Eulerian multiphase model was employed as the computational framework.
Xianglong Yang, Lei Yang
doaj +1 more source
Helicopter-V/STOL dynamic wind and turbulence design methodology [PDF]
Aircraft and helicopter accidents due to severe dynamic wind and turbulence continue to present challenging design problems. The development of the current set of design analysis tools for a aircraft wind and turbulence design began in the 1940's and ...
Bailey, J. Earl
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Influence of bulk turbulence and entrance boundary layer thickness on the curved duct flow field [PDF]
The objective of this investigation was the experimental evaluation of bulk turbulence and boundary thickness influence on the secondary flow development in a square, 90 deg turning duct.
Crawford, Roger A., Peters, Carroll E.
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Validation of short-pulse reflectometry turbulence measurements with a synthetic diagnostic
Nuclear FusionExperimental measurements of the turbulence amplitude utilizing a short pulse reflectometry method are presented. Two discharges with shaped plasma possessing opposite signs of triangularity are considered and a higher turbulence amplitude is found in ...
O. Krutkin +7 more
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Comparison of VLES and LES Turbulence Modeling for Swirling Turbulent Flow
Journal of Applied Fluid Mechanics, 2020 Swirling flow has been widely used in gas turbine and aero-engine combustor to stabilize the flame. However, accurate numerical prediction of the swirling turbulent flow is difficult due to complex vortex movement in the flow, and turbulence modeling is ...
P. Tiwari, Z. Xia, X. Han
doaj
Turbulent transport modelling of separating and reattaching shear flows [PDF]
The improvement of capabilities for computer simulation of turbulent recirculating flows was investigated. Attention has been limited to two dimensional flows and principally to statistically stationary motion. Improvement of turbulence modeling explored
Launder, B. E.
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Supersonic boundary-layer flow turbulence modeling [PDF]
Baldwin-Lomax and kappa-epsilon turbulence models were modified for use in Navier-Stokes numerical computations of Mach 2.9 supersonic turbulent boundary layer flows along compression ramps.
Wang, Chi-Rong
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Constraints on cosmic ray propagation in the galaxy [PDF]
The goal was to derive a more detailed picture of magnetohydrodynamic turbulence in the interstellar medium and its effects on cosmic ray propagation.
Cordes, James M.
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