搜索结果: 1-13 共查到“航空、航天科学技术 Flows”相关记录13条 . 查询时间(0.054 秒)
Studies of Wings Supporting Non-unique Solutions in Transonic Flows
Wings Supporting Non-unique Solutions Transonic Flows
2015/7/6
Non-unique numerical solutions of transonic flows over airfoils have been found, first for potential flow equation, and later for Euler and RANS equations. The studies have also been...
Airfoils Supporting Non-unique Transonic Solutions for Unsteady Viscous Flows
Airfoils Supporting Non-unique Transonic Solutions Unsteady Viscous Flows
2015/7/6
Non-unique numerical solutions of transonic flows have been found, first for potential flow equation, and later for Euler and RANS equations. The studies conducted so far have been m...
Acceleration of Convergence to a Periodic Steady State in Turbomachinery Flows
Acceleration Convergence Periodic Steady State Turbomachinery Flows
2015/7/2
This paper presents a technique used to accelerate the convergence of unsteady cal culations of time-periodic flows to a periodic steady state. The basis of the procedure is the use of the discr...
Development and Validation of a Massively Parallel Flow Solver for Turbomachinery Flows
Development Validation Massively Parallel Flow Solver Turbomachinery Flows
2015/7/2
This paper presents the development and validation of the unsteady, three-dimensional, multiblock,parallel turbomachinery flow solver, TFLO. The Unsteady Reynolds Averaged Navier-Stokes (Un-steady RAN...
Simulation of Supersonic Reacting Hydrocarbon Flows with Detailed Chemistry
Simulation Supersonic Reacting Hydrocarbon Flows Detailed Chemistry
2015/7/1
This paper presents a parallel multigrid method for computing inviscid and viscous high speed steady state flows with reacting hydrocarbons. The gov erning equations for reactive flow are solved using...
Time-accurate simulation of helicopter rotor flows including aeroelastic effects
Time-accurate simulation helicopter rotor flows including aeroelastic effects
2015/7/1
The following work presents recent developments in the simulation of helicopter rotor flows in the hover and forward flight regimes. The simulations are carried out by solving the full time-accurate c...
Parallel computation of supersonic reactive flows with detailed chemistry
Parallel computation supersonic reactive flows detailed chemistry
2015/7/1
This paper presents parallel computations of high speed steady-state hydrogen/oxygen and hydrogen/air reactive flows. The governing equations for reactive flow in the absence of viscosity, thermal con...
Flux Limited Dissipation Schemes for High Speed Unsteady Flows
Flux Limited Dissipation Schemes High Speed Unsteady Flows
2015/7/1
Within the framework of the Local Extremum Di-minishing (LED) or Essentially Local Extremum Diminishing (ELED) principle, efficient approaches to obtain a class of non-oscillatory high resolution sche...
POSITIVE SCHEMES AND SHOCK MODELLING FOR COMPRESSIBLE FLOWS
computational aerodynamics shock capturing positive schemes
2015/7/1
A unified theory of non-oscillatory finite volume schemes for both structured and unstructured meshes is developed in two parts. In the first part, a theory of local extremum diminishing (LED) and ess...
A New High Resolution Scheme for Compressible Viscous Flows with Shocks
Resolution Scheme Compressible Viscous Flows Shocks
2015/7/1
A new flux splitting and limiting technique which yields one-point stationary shock capturing is pre-sented. The technique is applied to the full Navier-Stokes and Reynolds Averaged Navier-Stokes equa...
Artificial Diffusion, Upwind Biasing, Limiters and their Effect on Accuracy and Multigrid Convergence in Transonic and Hypersonic Flows
Artificial Diffusion, Upwind Biasing, Limiters Accuracy Multigrid Convergence Transonic Hypersonic Flows
2015/7/1
The theory of non-oscillatory scalar schemes is developed in this paper in terms of the local extremum diminishing (LED) principle that maxima should not increase and minima should not decrease.
A new particle-like method for high-speed flows with chemical non-equilibrium
Hypersonic flows Numerical simulations Chemical non-equilibrium Supersonic combustion
2010/10/25
The present work is concerned with the numerical simulation of hypersonic blunt body flows with chemical non-equilibrium. New theoretical and numerical formulations for coupling the chemical reaction ...
national aeronautics and space administration Images Suggest Water Still Flows In Brief Spurts On Mars（图）
water ice water vapor Mars
2006/12/8
December 6, 2006，WASHINGTON - NASA photographs have revealed bright new deposits seen in two gullies on Mars that suggest water carried sediment through them sometime during the past seven years.