Results 21 to 30 of about 131,391 (338)

A Compressible Turbulence Model for Pressure—Strain

Fluids, 2022
This work focuses on the performance and validation of compressible turbulence models for the pressure-strain correlation. Considering the Launder Reece and Rodi (LRR) incompressible model for the pressure-strain correlation, Adumitroaie et al., Huang et
Hechmi Khlifi, Adnen Bourehla
doaj   +1 more source

The simulation of the flow through the porous media and diffusible barriers

EPJ Web of Conferences, 2018
Here we work with the RANS equations describing the non-stationary viscous compressible fluid flow. We focus on the numerical simulation of the flow through the porous media, characterized by the loss of momentum. Further we simulate the flow through the
Kyncl Martin, Pelant Jaroslav
doaj   +1 more source

Scalar transport in compressible flow

, 1996
Transport of scalar fields in compressible flow is investigated. The effective equations governing the transport at scales large compared to those of the advecting flow are derived by using multi-scale techniques.
Aschcroft, Avellaneda, Avellaneda, Bender, Bensoussan, Benzi, Biferale, Bouchaud, Dombre, Elperin, Fannjang, Frisch, Frisch, Frisch, Frisch, Gama, Gottlieb, Gradshteyn, Julicher, Kraichnan, M. Avellaneda, M. Vergassola, Majda, Mc Laughlin, Moffatt, Moffatt, Monin, Risken, Rosenbluth, Rousselet, Shraiman, Sinai, Sinai, Sivashinsky, Vergassola, Zeldovich, Zinn-Justin   +36 more
core   +1 more source

On the extension of LES methods from incompressible to compressible turbulent flows with application to turbulent channel flow [PDF]

, 2016
Published under licence in Journal of Physics: Conference Series by IOP Publishing Ltd. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.
Baez Vidal, Aleix, Lehmkuhl Barba, Oriol, Oliva Llena, Asensio, Pedro Costa, Juan Bautista, Pérez Segarra, Carlos David   +4 more
core   +1 more source

A Compressible Formulation of the One-Fluid Model for Two-Phase Flows

Fluids
In this paper, we introduce a compressible formulation for dealing with 2D/3D compressible interfacial flows. It integrates a monolithic solver to achieve robust velocity–pressure coupling, ensuring precision and stability across diverse fluid flow ...
Simon El Ouafa, Stephane Vincent, Vincent Le Chenadec, Benoît Trouette, Syphax Fereka, Amine Chadil   +5 more
doaj   +1 more source

Numerical Analysis and Characterization of Surface Pressure Fluctuations of High-Speed Trains Using Wavenumber–Frequency Analysis

Applied Sciences, 2019
The high-speed train interior noise induced by the exterior flow field is one of the critical issues for product developers to consider during design.
Songjune Lee, Cheolung Cheong, Jaehwan Kim, Byung-hee Kim   +3 more
doaj   +1 more source

A matrix-free high-order discontinuous Galerkin compressible Navier-Stokes solver: A performance comparison of compressible and incompressible formulations for turbulent incompressible flows

, 2018
Both compressible and incompressible Navier-Stokes solvers can be used and are used to solve incompressible turbulent flow problems. In the compressible case, the Mach number is then considered as a solver parameter that is set to a small value, $\mathrm{
Arndt, Arnold, Bassi, Beck, Beck, Brown, Cantwell, Carton de Wiart, Carton de Wiart, Chapelier, Del Alamo, Fehn, Fehn, Fehn, Fernandez, Fischer, Flad, Flad, Franciolini, Gassner, Guermond, Hager, Hartmann, Hesthaven, Hillewaert, Hindenlang, Joshi, Karniadakis, Kennedy, Kirby, Kopriva, Krank, Krank, Kronbichler, Kronbichler, Kronbichler, Kronbichler, Kubatko, Mengaldo, Moser, Moura, Orszag, Pazner, Steinmoeller, Taylor, Toulorge, Uranga, Vos, Wang   +48 more
core   +1 more source

Development of High-Fidelity Numerical Methodology for Prediction of Vehicle Interior Noise Due to External Flow Disturbances Using LES and Vibroacoustic Techniques

Applied Sciences, 2022
A pleasant and quiet cabin in driving a car is one of the most critical factors affecting a customer’s choice in a market. As the traditional noise sources such as power trains become less, the relative contribution of aerodynamic noise to the interior ...
Songjune Lee, Sang-heon Lee, Cheolung Cheong   +2 more
doaj   +1 more source

Compressibility effects on the Rayleigh-Taylor instability growth between immiscible fluids

, 2003
The linearized Navier-Stokes equations for a system of superposed immiscible compressible ideal fluids are analyzed. The results of the analysis reconcile the stabilizing and destabilizing effects of compressibility reported in the literature.
Livescu, Daniel
core   +1 more source

Berberine–cinnamic acid co‐crystal effect in ameliorating hyperlipidemia might be regulated through the PI3K/AKT/mTOR/SREBP‐1 signaling pathway

FEBS Open Bio, EarlyView.
Berberine–cinnamic acid co‐crystal (BBR‐CA) inhibits the phosphorylation of the phosphatidylinositol 3‐kinase (PI3K)/AKT/mammalian target of rapamycin (mTOR) pathway, suppressing the transfer of pre‐sterol regulatory element‐binding proteins‐1 (SREBP‐1) from the endoplasmic reticulum to the nucleus. This results in a decrease in the expression level of
Wenheng Gao, Yunlong Li, Lihua Chen, Wenshuo Yang, Yong He, Ye Yang, Dengke Yin, Song Tan   +7 more
wiley   +1 more source