搜索结果: 1-15 共查到“工学 laminar”相关记录23条 . 查询时间(0.118 秒)
High-Order Spectral Difference Simulation of Laminar Compressible Flow Over Two Counter-Rotating Cylinders
High-Order Spectral Diff erence Simulation Laminar Compressible Counter-Rotating Cylinders
2015/7/3
Flow past a single rotating cylinder has been studied, both numerically and experimen tally, by many authors. In contrast is the flow past rotating cylinders in a side-by-side arrangement, which...
High-order accurate simulation of low-Mach laminar flow past two side-by-side cylinders using spectral difference method
Spectral difference method Curved wall boundary Unstructured grid
2015/7/2
This paper reports development of a two-dimensional solver for compressible viscous flow using spectral difference (SD) method and its applications on simulating laminar flow past two side...
Design-Oriented Aerodynamic Analysis for Supersonic Laminar Flow Wings
Super sound pneumatic
2015/6/18
The computation of boundary layer properties and
laminar-to-turbulent transition location is a very
complex problem, generally not undertaken in the
context of aircraft design. Yet if an aircraft i...
Mechanisms of axis-switching and saddle-back velocity profile in laminar and turbulent rectangular jets
axis-switching saddle-back
2015/1/12
e numerically investigate the underlying physics of two peculiar phenomena, which are axis-switching and saddle-back velocity profile, in both laminar and turbulent rectangular jets using lattice Bolt...
Absolute linear instability in laminar and turbulent gas/liquid two-layer channel flow
Absolute linear instability laminar and turbulent gas/liquid two-layer channel flow Fluid Dynamics
2012/4/20
We study two-phase stratified flow where the bottom layer is a thin laminar liquid and the upper layer is a fully-developed gas flow. The gas flow can be laminar or turbulent. To determine the boundar...
层流炉内颗粒停留时间PIV测量（PIV Measurement of Resident Time for Char Particle in Laminar Entrained Flow Reactor）
层流炉 颗粒 停留时间 PIV测量
2010/12/29
为了确定生物质热分解产物在层流炉内的停留时间，设计了一套层流炉透明冷态模拟装置，以炭粉代替生物质热解固体产物，利用PIV技术测量炭粉在不同主气流量和收集距离下的停留时间。根据流场相似准则，即冷态流场与热态流场雷诺数相等，确定主气流量分别为1.0、1.5、2.0和2.5m3/h；收集距离由热态实验确定，分别为200、250、300和350mm。测量结果表明：对于同一收集距离，炭粉的实际停留时间与...
Analysis of Heat Transfer for Laminar Flow in Concentric Pipes
Concentric pipe heat transfer enhancement non-staggered grid finite volume
2009/10/14
In this study, laminar flow and heat transfer in a circular pipe with an inner tube inserted was investigated numerically. For this reason, two-dimensional Navier-Stokes, continuity and energy equatio...
LAMINAR AIR FLOW FREE CONVECTIVE HEAT TRANSFER INSIDE A VERTICAL CIRCULAR PIPE WITH DIFFERENT INLET CONFIGURATIONS
laminar flow free convective heat transfer vertical pipe
2009/10/14
Free convection heat transfer has been experimentally investigated for laminar air flow in a vertical circular pipe by using the boundary condition of constant wall heat flux in the ranges of RaL from...
LAMINAR FULLY DEVELOPED MIXED CONVECTION WITH VISCOUS DISSIPATION IN A UNIFORMLY HEATED VERTICAL DOUBLE-PASSAGE CHANNEL
convection channel double-passage
2009/10/14
Fully developed laminar mixed convection has been investigated numerically in a vertical double-passage channel by taking into account the effect of viscous dissipation. The channel is divided into tw...
PERSISTENCE OF THE LAMINAR REGIME IN A FLAT PLATE BOUNDARY LAYER AT VERY HIGH REYNOLDS NUMBER
transition flow control boundary layer theory
2009/10/13
Starting from the Navier-Stokes and the continuity equations of a viscous incompressible fluid, a statistical theory is developed for the prediction of transition and break down to turbulence in a lam...
ON THE EVOLUTION OF LAMINAR TO TURBULENT TRANSITION AND BREAKDOWN TO TURBULENCE
transition to turbulence two-point correlations closure problem
2009/10/13
Starting from the basic conservation laws of fluid flow, we investigated transition and breakdown to turbulence of a laminar flat plate boundary layer exposed to small, statistically stationary, two-c...
Numerical Simulation of a Confined Methane/Air Laminar Diffusion Flame by the Method of Lines
Method of lines (MOL) Unsteady combustion Con ned laminar diffusion flame Flame-sheet model
2009/10/12
A parallel computational fluid dynamics code based on the method of lines approach was developed for the simulation of transient laminar two-dimensional reacting flows. The chemistry was modeled by fl...
Computation of Time-Accurate Laminar Flows Using Dual Time Stepping and Local Preconditioning with Multigrid
Dual time stepping Local preconditioning Laminar flow Multigrid
2009/10/9
A cell-centered finite volume method with explicit dual time-stepping and a low Mach number preconditioning technique is successfully applied to 2-dimensional Navier-Stokes equations for the numerical...
Influence of Degradation Gases on Laminar Flames from Forest Fuels
Forest fire degradation gas influence
2009/10/9
The aim of this work is to identify the parameters influencing the flame behavior. Three different species (Pinus pinaster, Pinus halepensis and Erica arborea) involved in forest fire were crushed to ...
煤层气—空气预混层流火焰特性试验（Experiment on the Premixed Laminar Flames of Coal Bed Methane-air Mixtures）
煤层气 预混层流火焰 定容燃烧弹
2009/9/2
利用高速摄影技术，在定容燃烧弹中研究了不同燃空当量比、初始压力和煤层气中CH4浓度对煤层气燃烧火焰传播速度和层流燃烧速度的影响。研究结果表明：在燃空当量比为1.1时层流燃烧速度最大；燃烧开始时，随着初始混合压力的增加，最大燃烧压力明显增加，火焰传播速度和层流燃烧速度减小，火焰半径大于40mm后，层流火焰传播速度和燃烧速度又随初始压力的增加而增大；随着煤层气中CH4浓度的增加，层流燃烧速度和最高燃烧...