搜索结果: 136-150 共查到“CFD”相关记录252条 . 查询时间(0.093 秒)
Vortex cloud flow modelling of cylinders in orbital motion at low reynolds numbers and comparisons with some published grid-based cfd predictions
vortex cloud modelling cylinder wake flows cylinder orbital motion
2010/3/11
Cylinders in elliptical orbital motion at low Reynolds numbers (Re) have been fairly extensively researched by grid-based Computational Fluid Dynamic (CFD) methods, revealing discontinuous behaviour o...
基于CFD的方形截面导弹纵向虚拟飞行模拟
虚拟飞行 非定常流动 飞行力学 方型截面导弹
2014/3/10
通过将飞行力学模型及操纵控制舵面的控制律同流体力学方程耦合求解, 能够完成基于 CFD方法的虚拟飞行模拟. 通过这种方法实现了方形截面导弹的纵向虚拟飞行模拟. 着 重介绍了将飞行力学方程及舵偏控制律耦合到CFD解算器中的方法, 以及用于复杂外形的需要 随飞行器及舵偏一起运动的多块结构网格更新方法，研究成果未来可用于非线性条件 下飞行器稳定性及控制律的检验. 完成了方形截面导弹纵向虚拟飞行模拟，包括...
提出了一种基于计算流体力学/计算结构动力学(CFD/CSD)的非线性气动弹性分析方法，并应用于切尖三角翼的非线性颤振和极限环振荡（LCO）研究。该方法将非线性有限元(FEM)和CFD计算相结合，并辅以高精度的界面插值，能够分析结构和气动非线性共存的气动弹性问题。结构部分以四边形平板壳元为基础，采用更新的拉格朗日（UL）方法分析结构大变形引起的几何非线性问题。气动部分以Navier-Stokes (...
Using CFD Software to Calculate Hydrodynamic Coefficients
pure car carrier (PCC) flat-plate sail oblique sailing vessel speed
2011/9/9
Applications of computational fluid dynamic (CFD) to the maritime industry continue to grow with the increasing development of computers. Numerical approaches have evolved to a level of accuracy which...
Using CFD Software to Calculate Hydrodynamic Coefficients
pure car carrier (PCC) flat-plate sail oblique sailing vessel speed
2011/9/9
Applications of computational fluid dynamic (CFD) to the maritime industry continue to grow with the increasing development of computers. Numerical approaches have evolved to a level of accuracy which...
CFD Modeling of Turbidity Current Deposition
sediment turbidity current computational fluid dynamics SSIIM density current
2011/9/9
Simulation of the flow and deposition from a laboratory turbidity current, in which dense mixtures of sediment move down a narrow, sloping channel and flow into a large tank. SSIIM CFD software is use...
从图形处理器(GPU)架构特点出发，提出了基于数据并行的隐式计算流体力学(CFD)求解方法，空间离散格式采用迎风Roe格式，计算网格适用于结构和非结构网格。采用统一计算设备架构(CUDA)技术实现了GPU上的隐式CFD并行计算。分别在Intel Core 2 Quad 3.0 GHz CPU和NVIDIA GTX280 GPU上进行了计算，结果表明隐式格式计算速度是显式格式6倍以上，采用显式格式的...
Physics-driven CFD modeling of complex anatomical cardiovascular flows-a TCPC case study
Fontan operation Digital particle image velocimetry Flow instability Computational Fluid Dynamics
2009/12/23
Recent developments in medical image acquisition combined with the latest advancements in numerical methods for solving the Navier-Stokes equations have created unprecedented
opportunities for develo...
Progress in the CFD modeling of flow instabilities in anatomical total cavopulmonary connections
Fontan operation Digital particle image velocimetry Flow instability Computational Fluid Dynamics
2009/12/23
Intrinsic flow instability has recently been reported in the blood flow pathways of the surgically created total-cavopulmonary connection. Besides its contribution to the hydrodynamic power loss and h...
The use of CFD in the evaluation of UV treatment systems
use of CFD evaluation UV treatment systems
2009/12/4
UV disinfection is now widely used for the treatment of water for consumption and wastewater in many countries. It offers advantages over other techniques in specific circumstances. Analysis of these ...
The focus of the paper is on demonstrating how it is possible to automate complex CFD simulations using scripting language around and within the structure of the CFD command files. To illustrate this,...
A 3D CFD model analysis of the hydraulics of an outfall structure at a power plant
3D CFD model analysis hydraulics outfall structure power plant
2009/12/4
A practical application of a three-dimensional (3D) computational fluid dynamics (CFD) model to an outfall structure of a power plant is presented in this paper. The outfall structure, used for discha...
流化床密相区颗粒扩散系数的CFD数值预测
颗粒混合 气泡运动 颗粒横向扩散系数
2009/11/25
应用离散颗粒模型直观获得颗粒运动情况，并从单个颗粒和气泡作用的角度分析颗粒运动和混合，证实气泡在床层中上升、在床层表面爆破以及气泡上升引起的乳化相下沉运动对颗粒混合起关键作用。应用基于颗粒动理学的双流体模型系统地对床宽分别为0.2、0.4、0.8 m的二维流化床在鼓泡区和湍动区的气固两相流动行为进行数值模拟。受离散颗粒模型启发，在双流体模型计算结果基础上，引入理想示踪粒子技术计算床内平均颗粒扩散系...