Results 21 to 30 of about 8,682,927 (148)
An experimental validation of a nonlinear acoustic resistance model for an acoustically compact area contraction with steady mean flow [PDF]
JASA 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
A low Mach number solver: Enhancing applicability [PDF]
Journal of Computational Physics, 2013 In astrophysics and meteorology there exist numerous situations where flows exhibit small velocities compared to the sound speed. To overcome the stringent timestep restrictions posed by the predominantly used explicit methods for integration in time the Euler (or Navier-Stokes) equations are usually replaced by modified versions.
Natalie Happenhofer +4 more
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A homogeneous relaxation low mach number model [PDF]
ESAIM: Mathematical Modelling and Numerical Analysis, 2021 In the present paper, we investigate a new homogeneous relaxation model describing the behaviour of a two-phase fluid flow in a low Mach number regime, which can be obtained as a low Mach number approximation of the well-known HRM. For this specific model, we derive an equation of state to describe the thermodynamics of the two-phase fluid.
Faccanoni, Gloria +2 more
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Flutter analysis of tapered composite fins: Analysis and experiment [PDF]
FME Transactions, 2022 In the present work, the aeroelastic stability of tapered composite plates is investigated. Existing flutter models, based on the typical section approach, are reviewed for quasi-steady and unsteady low Mach number axial flows and modified for the thin ...
Dinulović Mirko +3 more
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Movement Characteristics of Shock Train Under Continuous Change of Incoming Mach Number
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
Sound radiation in turbulent channel flows [PDF]
, 2003 Lighthill’s acoustic analogy is formulated for turbulent channel flow with pressure as the acoustic variable, and integrated over the channel width to produce a two-dimensional inhomogeneous wave equation.
Morfey, Christopher L. +2 more
core +1 more source
Analysis of basic concepts of advanced engines for supersonic civil aircraft on the basis of foreign designers’ experience [PDF]
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2021 The work contains the results of a study of the basic design concepts of advanced engines for supersonic civil aircraft, carried out in order to make a forecast for the development of aviation technology, taking into account the experience of foreign ...
A. D. Alendar +2 more
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
Energy and Exergy Analysis and Optimization of Turbofan Engine-TF30-P414 [PDF]
Iranica Journal of Energy and Environment, 2021 The turbofan engines are one of the constitutes significant components of the aero engines. In this study, the thermodynamic modeling of the TF30-P414 turbofan engine is developed and validated with reference values.
S. D. Farahani +2 more
doaj +1 more source
Transitional and turbulent heat transfer of swept cylinder attachment line in hypersonic flow [PDF]
, 2006 A wide range of experimental results carried out in low enthalpy facilities is used to sustain simple correlations predicting heat transfer rates on an attachment line in hypersonic flow.
Cooper, Richard K. +3 more
core +1 more source