搜索结果: 1-14 共查到“理学 CFD”相关记录14条 . 查询时间(0.05 秒)
过冷沸腾自然对流两相CFD模拟及应用
两相CFD 过冷沸腾 自然对流 非能动安全壳冷却系统
2020/2/26
采用计算流体力学（CFD）方法，开展过冷沸腾自然对流两相模拟与应用研究。对侧壁加热圆柱水箱过冷沸腾自然对流实验采用两相CFD瞬态模拟，模拟时间为1 500 s，通过模型设置与模拟方法研究，再现了过冷沸腾发生后实验的温度阶跃，得到与实验较一致的温度分布、气泡产生时间与产生位置，确保了数值计算的合理性与准确性。在此基础上，对以欧洲ESBWR（经济简化沸水堆）非能动安全壳冷却系统（PCCS）为原型的IS...
中国地质大学科学技术发展院杨现禹(博士研究生),蔡记华*,蒋国盛*等. 工程学院, Energy(1 May 2019), CFD and DEM modelling of particles plugging in shale pores
纳米颗粒；独特；物理特性；研究热点
2021/10/20
近日，国际著名学术期刊《Energy》刊发了中国地质大学工程学院蒋国盛教授和蔡记华教授团队的研究成果——“CFD and DEM modelling of particles plugging in shale pores”。论文第一作者杨现禹为工程学院2016级博士研究生，通讯作者为蔡记华教授和蒋国盛教授。
内陆核电厂冷却塔对大气扩散影响的CFD模拟
大气扩散因子 Fluidyn-PANACHE 高斯模型 风场
2014/3/26
风场的时空变化和大气湍流特征是影响局地大气污染物迁移、扩散的重要因子。本文以某内陆核电厂址为背景,针对内陆核电厂址气象及地形条件的复杂性,选用三维计算流体动力学(CFD)模型Fluidyn-PANACHE,模拟气载放射性颗粒137Cs、气溶胶131I和常规气态污染物CO在大气中的三维风场及浓度场分布情况。该方法可合理模拟内陆核电厂大型冷却塔等建筑物周围的湍流和绕流,弥补了标准高斯模型精细化程度不足...
基于非结构混合网格的N-S方程求解器和结构柔度影响系数法，发展了一种考虑气动、结构非线性的基于RBF插值技术CFD/CSD耦合分析方法，适用于解决现代大展弦比飞机的非线性静气动弹性问题。该方法采用时间相关法（即求解非定常方程组，用长时间的渐近解趋于定常状态）求解静气弹分析时的定常流动。考虑大展弦比飞机结构变形问题为大变形小应力问题，在利用柔度系数法求解结构方程时，假设每次求解结构方程时应力与应变为...
On direct inverse of Stokes, Helmholtz and Laplacian operators in view of time-stepper-based Newton and Arnoldi solvers in incompressible CFD
Stoke Helmholtz Laplacian operators time-stepper-based Newton Arnoldi solvers incompressible CFD
2011/8/4
Abstract: Factorization of the incompressible Stokes operator linking pressure and velocity is revisited. The main purpose is to use the inverse of the Stokes operator with a large time step as a prec...
低压下水欠热流动沸腾的两相CFD数值模拟研究
欠热流动沸腾 两流体模型 多相流
2011/8/23
采用两流体(汽相和液相)基本数学模型，结合汽相和液相之间的界面传热、传质和动量交换封闭模型、汽泡平均直径模型、汽泡脱离直径模型、汽泡成核模型、汽泡脱离频率模型、欠热沸腾起始点模型和壁面热流密度分配模型，在CFD软件CFX4.4中采用用户自定义函数将相变引起的传热、传质和动量交换作为源项分别添加到汽相和液相的能量、质量和动量守恒方程中，对低压下内管加热外管绝热的环形通道内的欠热沸腾进行了数值研究，得...
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...
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...
CFD Online（图）
计算流体力学 计算数学 Computational Fluid Dynamics
2007/12/26
This is a collection of links to electronic information related to Computational Fluid Dynamics. The aim is to give an overview of the vast resources available on the net for people working with CFD. ...