Results 21 to 30 of about 383,662 (302)

An experimental validation of a nonlinear acoustic resistance model for an acoustically compact area contraction with steady mean flow [PDF]

open access: yesJASA Express Letters, 2021
In a previously published paper, a model for the nonlinear acoustic response of an area contraction including bias flow was presented. The model's prediction for the zero-driving resistance grew progressively worse as the steady-flow Mach number ...
Luke H. Humphreys   +2 more
doaj   +1 more source

Local well-posedness and low Mach number limit of the compressible magnetohydrodynamic equations in critical spaces [PDF]

open access: yes, 2016
The local well-posedness and low Mach number limit are considered for the multi-dimensional isentropic compressible viscous magnetohydrodynamic equations in critical spaces.
Li, Fucai, Mu, Yanmin, Wang, Dehua
core   +1 more source

Low Mach Number Flows and Combustion [PDF]

open access: yesSIAM 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

Movement Characteristics of Shock Train Under Continuous Change of Incoming Mach Number

open access: yes气体物理, 2023
In order to study the movement characteristics of shock train with the variation of incident shock, a direct-connect wind tunnel experimental system with variable incoming Mach number was built.
Zi-ao WANG   +3 more
doaj   +1 more source

Fuzzy-based prediction for suddenly expanded axisymmetric nozzle flows with microjets [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2022
The current research focuses on the implementation of the fuzzy logic approach for the prediction of base pressure as a function of the input parameters.
Jaimon D. Quadros   +5 more
doaj   +1 more source

Developing and applying Mach 4.5 nozzle in hypersonic wind tunnel

open access: yesXibei Gongye Daxue Xuebao, 2021
Mach 4.5 tests in a conventional trans-supersonic wind tunnel are often accompanied by the air liquefaction phenomenon, resulting in the low reliability of test data.
HUANG Ju   +4 more
doaj   +1 more source

Zero Mach number limit of the compressible Euler–Korteweg equations

open access: yesBoundary Value Problems, 2020
In this paper, we investigate the zero Mach number limit for the three-dimensional compressible Euler–Korteweg equations in the regime of smooth solutions.
Yeping Li, Gang Zhou
doaj   +1 more source

High order semi-implicit weighted compact nonlinear scheme for the all-Mach isentropic Euler system

open access: yesAdvances 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

Research progress in nozzle design for supersonic variable Mach number wind tunnel

open access: yesHangkong gongcheng jinzhan
The supersonic variable Mach number wind tunnel can operate at multiple Mach numbers during a single operation, which has unique advantages for studying supersonic maneuvering process and scramjet starting.
WANG Ao, DING Hao, TIAN Lifeng
doaj   +1 more source

On a diphasic low mach number system [PDF]

open access: yesESAIM: 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

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