Results 51 to 60 of about 157,193 (193)
Large-Eddy Simulation of Contrails [PDF]
Journal of the Atmospheric Sciences, 1998 Numerical simulations of contrails have been performed to investigate the role of various external parameters and physical processes in the life cycle of contrails. The general idea underlying the model is that of a largeeddy model. The model explicitly represents the large-scale three-dimensional motions (10-m grid resolution), while small-scale ...
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Large Eddy Simulation in Duct Flow
Al-Khawarizmi Engineering Journal, 2017 In this paper, the problem of developing turbulent flow in rectangular duct is investigated by obtaining numerical results of the velocity profiles in duct by using large eddy simulation model in two dimensions with different Reynolds numbers, filter ...
Jalal M. Jalil, Ihab Omar Abbas
doaj
ASHEE: a compressible, equilibrium-Eulerian model for volcanic ash plumes [PDF]
, 2015 A new fluid-dynamic model is developed to numerically simulate the non-equilibrium dynamics of polydisperse gas-particle mixtures forming volcanic plumes. Starting from the three-dimensional N-phase Eulerian transport equations for a mixture of gases and
Berselli, Luigi Carlo +2 more
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LARGE EDDY SIMULATION FOR TRANSESTERIFICATION OF WASTE VEGETABLE OIL
International Islamic University Malaysia Engineering Journal, 2015 The paper provides detailed information involved in the numerical simulation of transesterification of waste vegetable oil (WVO). The main objective of this work is to perform mixing study based on large eddy simulation particle image Velocimetry (LES ...
A K M Mohiuddin, NABEEL A. ADEYEMI
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Transitions in large eddy simulation of box turbulence
, 2017 One promising decomposition of turbulent dynamics is that into building blocks such as equilibrium and periodic solutions and orbits connecting these. While the numerical approximation of such building blocks is feasible for flows in small domains and at
Kawahara, Genta +2 more
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Observation and numerical simulation of a dust devil at the Hong Kong International Airport
Meteorologische Zeitschrift, 2021 A dust devil was first observed in Hong Kong at the airport in 2021. This paper documents the meteorological conditions under which the dust devil occurred.
Pak Wai Chan, Q.S. Li
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A Stochastic Approach for Parameterizing Unresolved Scales in a System with Memory
Journal of Algorithms & Computational Technology, 2009 Complex systems display variability over a broad range of spatial and temporal scales. Some scales are unresolved due to computational limitations. The impact of these unresolved scales on the resolved scales needs to be parameterized or taken into ...
Aijun Du, Jinqiao Duan
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Journal of Advances in Modeling Earth Systems, 2022 In large‐eddy simulations, subgrid‐scale (SGS) processes are parameterized as a function of filtered grid‐scale variables. First‐order, algebraic SGS models are based on the eddy‐viscosity assumption, which does not always hold for turbulence.
Yu Cheng +10 more
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Large eddy simulation of film cooling on turbine vane
Journal of Thermal Science and Technology, 2019 Large eddy simulations were performed for film cooling on scaled-up C3X turbine vane at the nominal blowing ratio of M=0.5~1.5, and the Reynolds number, Re=3000, based on the mainstream inlet velocity and hole diameter.
Fangsu FAN, Chunhua WANG, Jingzhou ZHANG
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Inverse modeling for large-eddy simulation [PDF]
Physics of Fluids, 1997 Approximate higher order polynomial inversion of the top-hat filter is developed with which the turbulent stress tensor in large-eddy simulation can be consistently represented using the filtered field. Generalized (mixed) similarity models are proposed which improved the agreement with the kinetic energy transfer to small scales.
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