Results 21 to 30 of about 9,717,661 (350)
Throat length effect on the flow patterns in off-design conical nozzles [PDF]
FME Transactions, 2022 In the present work, a flow field study was performed for off-design conical nozzles with non-circular cylindrical throat sections such as those found in experimental sounding rocket motor applications. The flow field was simulated with the RANS model in
Tolentilo San Luis, Mirez Jorge
doaj +1 more source
Sonic Eddy Model of the Turbulent Boundary Layer
Fluids, 2022 The effects of Mach number on the skin friction and velocity fluctuations of the turbulent boundary layer are considered through a sonic eddy model. Originally proposed for free shear flows, the model assumes that the eddies responsible for momentum ...
Paul Dintilhac, Robert Breidenthal
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Low Mach number limit on thin domains [PDF]
Nonlinearity, 2020 We consider the compressible Navier-Stokes system describing the motion of a viscous fluid confined to a straight layer $ _ =(0, )\times\mathbb{R}^2$. We show that the weak solutions in the 3D domain converge strongly to the solution of the 2D incompressible Navier-Stokes equations (Euler equations) when the Mach number $ $ tends to zero as well as
Caggio M. +3 more
openaire +4 more sources
MAESTROeX: A Massively Parallel Low Mach Number Astrophysical Solver [PDF]
Journal of Open Source Software, 2019 We present MAESTROeX, a massively parallel solver for low Mach number astrophysical flows. The underlying low Mach number equation set allows for efficient, long-time integration for highly subsonic flows compared to compressible approaches. MAESTROeX is
Duoming Fan +4 more
semanticscholar +1 more source
Frontiers in Physics, 2022 The Mach number is one of the key parameters of collisionless shocks. Understanding shock physics requires knowledge of the spatial scales in the shock transition layer.
Michael Gedalin +3 more
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Twin neural network regression
Applied AI Letters, Volume 3, Issue 4, December 2022., 2022 We propose to reformulate a regression problem into predicting differences between target values. This allows for leveraging consistency conditions which can be used as uncertainty estimates and enable the production of an ensemble of predictions while training only a single neural network.
Sebastian Johann Wetzel +3 more
wiley +1 more source
Aeroengine High-Attitude/Low Mach Number Oscillations: Mechanism and Prevention Design
International Journal of Aerospace Engineering, 2021 The issue of aeroengine oscillations over high-attitude and low-speed flight envelope has been an unsolved problem due to their classified nature and hard reproduction in simulated altitude test stand.
Jiqiang Wang
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Quantum Optics Parity Effect on Generalized NOON States and Its Implications for Quantum Metrology
Annalen der Physik, Volume 534, Issue 12, December 2022., 2022 A quantum optical‐parity effect is found to emerge in the evolution from generalized NOON states of a two‐level atom or molecule coupled to a cavity field. The parity of the photon number influences the quantum entanglement properties of the system, resulting in a parity‐dependent ability to extract states of the evolving system for precise phase ...
Agostino Migliore, Antonino Messina
wiley +1 more source
Low Mach number limit of some staggered schemes for compressible barotropic flows [PDF]
Mathematics of Computation, 2018 In this paper, we study the behaviour at low Mach number of numerical schemes based on staggered discretizations for the barotropic Navier-Stokes equations.
R. Herbin, J. Latché, K. Saleh
semanticscholar +1 more source
Bayesian Self‐Optimization for Telescoped Continuous Flow Synthesis
Angewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023 An autonomous continuous flow platform for the rapid development of multistep synthetic pathways is reported. New multipoint sampling and Bayesian optimization techniques were combined, enabling simultaneous identification of optimum reaction conditions within a pharmaceutical process. The short optimization times achieved are promising for development
Adam D. Clayton +9 more
wiley +1 more source