Results 31 to 40 of about 5,032,099 (270)

Editorial: Rarefied Gas Flows—From Micro–Nano Scale to the Hypersonic Regime

open access: yesFluids
Rarefied gas dynamics spans a wide spectrum of applications: micro–nano devices where the mean free path becomes comparable to characteristic lengths, vacuum and porous systems where Knudsen diffusion emerges, and high-speed (including hypersonic) flows ...
Ehsan Roohi
doaj   +1 more source

Particle-based hybrid and multiscale methods for nonequilibrium gas flows

open access: yesAdvances in Aerodynamics, 2019
Over the past half century, a variety of computational fluid dynamics (CFD) methods and the direct simulation Monte Carlo (DSMC) method have been widely and successfully applied to the simulation of gas flows for the continuum and rarefied regime ...
Jun Zhang   +4 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Study on Lubrication Theory of Orificed Throttle Based on Molecule Collision

open access: yesMATEC Web of Conferences, 2016
Orifice restriction is a traditional form of throttle used in aerostatic guide way. Practically, self-excited vibration or even air hammer phenomenon will appear in gas film interior when supply gas enlarges or the film thickness decreases to micron ...
Long Wei, Gong Ling, Yang Shao Hua
doaj   +1 more source

Growth chamber gas dynamics in Cz silicon single crystal growth process [PDF]

open access: yesModern Electronic Materials
Mathematical simulation results for inert gas (argon) dynamics in the rarefied atmosphere of Redmet-10 Cz single crystal silicon growth furnace chamber have been reported.
Nataliya A. Verezub   +1 more
doaj   +3 more sources

Rarefied Flow Simulation of Conical Intake and Plasma Thruster for Very Low Earth Orbit Spaceflight

open access: yesFrontiers in Physics, 2022
Air-breathing electric propulsion has the potential to enable space missions at very low altitudes. This study introduces to a 0D hybrid formulation for describing the coupled intake and thruster physics of an air-breathing electric propulsion prototype.
Eugenio Ferrato   +8 more
doaj   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

open access: yesFEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard   +12 more
wiley   +1 more source

Research progress on simplified computational methods for Boltzmann equation and gas-solid boundary conditions

open access: yesKongqi donglixue xuebao
Rarefied gas dynamics addresses multiscale non-equilibrium transport problems spanning from the molecular mean free path to the continuum flow limit, and its theoretical modelling and numerical methodologies have long been important research topics in ...
Zhongzheng Jiang   +7 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

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