Results 11 to 20 of about 18,579 (261)
Xibei Gongye Daxue Xuebao, 2023 This paper studies several problems that may exist in the aerodynamic design of low Mach number general aircraft, and discusses the design characteristics of the pressure distribution of some related airfoils while part of the characteristics is verified
ZHANG Yu, BAI Junqiang, QU Feng
doaj +1 more source
Low Mach Number Flows and Combustion [PDF]
SIAM Journal on Mathematical Analysis, 2006 We prove uniform existence results for the full Navier-Stokes equations for time intervals which are independent of the Mach number, the Reynolds number and the Péclet number. We consider general equations of state and we give an application for the low Mach number limit combustion problem introduced by Majda.
openaire +2 more sources
Bubble Expansion Computations at Low-Mach Number Regime [PDF]
14th WCCM-ECCOMAS Congress, 2021 A 1D bubble expansion problem is solved using standard compressible methods whose numerical solutions are compared with the exact low-Mach solution of the problem. The low Mach solution is proved to provide a very good approximation of the grid-converged compressible solution for a weak expansion and an envelope solution for the strong expansion.
Beccantini, A. +2 more
openaire +2 more sources
Modified Gamma-Based Model for Solving Low Mach Number Compressible Two Phase Flows
Journal of Fluid Science and Technology, 2013 This paper presents some modifications of the gamma-based model developed by K.M. Shyue (J. Comput. Phys., 1998, 142, 208-242). In deriving process of the original model, pressure equilibrium and an isentropic condition are not involved explicitly ...
Junichi OOIDA, Kota NAKANO, Kohei NAGANE
doaj +1 more source
High order semi-implicit weighted compact nonlinear scheme for the all-Mach isentropic Euler system
Advances in Aerodynamics, 2020 The computation of compressible flows at all Mach numbers is a very challenging problem. An efficient numerical method for solving this problem needs to have shock-capturing capability in the high Mach number regime, while it can deal with stiffness and ...
Yanqun Jiang +4 more
doaj +1 more source
Sound attenuation in high mach number oscillating bubble media
Ultrasonics Sonochemistry, 2023 We study theoretically and numerically sound attenuation in bubble-containing media when the bubbles are freely oscillating at high Mach numbers. This paper expands one of the main forms of bubble-related acoustic damping factors by extending the ...
Jiawen Yu, Desen Yang, Jiangyi Zhang
doaj +1 more source
On a diphasic low mach number system [PDF]
ESAIM: Mathematical Modelling and Numerical Analysis, 2005 The author proposes a diphasic low Mach number (DLMN) system for the modelling of diphasic flows at low Mach number. This system filters out the acoustic waves but keeps all the informations coming from the thermodynamic as the equations of state and the entropy contrary to a standard incompressible diphasic Navier-Stokes system.
openaire +1 more source
Journal of Fluid Science and Technology, 2021 High-resolution numerical simulation has been performed to study aeroacoustic noise radiated from a turbulent boundary layer at freestream Mach number Ma = 0.3, which develops on a smooth flat plate and over a small forward-facing step.
Shiko MORIYAMA +2 more
doaj +1 more source
A numerical model of thermoacoustic heat pumping inside a compact cavity
Acta Acustica, 2023 This paper presents a numerical study of thermoacoustic heat pumping along a stack of solid plates placed inside a compact cavity submitted to an oscillating flow.
Fraigneau Yann +2 more
doaj +1 more source
On the Low Mach Number Limit for the Compressible Euler System [PDF]
SIAM Journal on Mathematical Analysis, 2019 In this paper, we propose a new approach to singular limits of inviscid fluid flows based on the concept of dissipative measure-valued solutions. We show that dissipative measure-valued solutions of the compressible Euler equations converge to the smooth solution of the incompressible Euler system when the Mach number tends to zero. This holds both for
Eduard Feireisl +2 more
openaire +4 more sources