A5057132102- Heat transfer and supercritical fluids
- Subcritical and Supercritical Water Processes
- Aerodynamics and Fluid Dynamics Research
- Aerodynamics and Acoustics in Jet Flows
- Wind and Air Flow Studies
- Combustion and flame dynamics
- Heat Transfer and Boiling Studies
- Fluid Dynamics and Turbulent Flows
- Facility Location and Emergency Management
- Power Systems and Technologies
- Heat Transfer and Optimization
- Vehicle Noise and Vibration Control
- Multi-Criteria Decision Making
- Quality Function Deployment in Product Design
- Technology Assessment and Management
- Thermochemical Biomass Conversion Processes
- Simulation and Modeling Applications
- Fluid Dynamics and Vibration Analysis
- Computer Graphics and Visualization Techniques
- Fluid Dynamics and Heat Transfer
- Fluid Dynamics and Mixing
- Technology and Security Systems
- Embedded Systems and FPGA Design
- Phase Equilibria and Thermodynamics
- Digital and Cyber Forensics
Hunan University
2007-2022
Lingnan Normal University
2021-2022
Hohai University
2021
Xi'an Jiaotong University
2011-2017
PLA Army Service Academy
2014-2016
Lanzhou University
2015
Chongqing University
2015
RMIT University
2014
Inner Mongolia Electric Power Survey & Design Institute (China)
2010
Second Hospital of Yichang
2010
An experimental study of heat transfer to supercritical water has been performed at Xi'an Jiaotong University with a vertical annular tube. The test sections were constructed an gap 2 mm and internal heater 8 outer diameter. Experimental parameter covered pressures 23 25 MPa, mass fluxes 700 1000 kg/m2s, 200–1000 kW/m2. data acquired from downward flow upward flow, respectively. There differences heat-transfer characteristics between the two directions. Compared coefficient increased flow. A...
Numerical computation was conducted to investigate the flow-induced sunroof buffeting noise at low Mach numbers. In order avoid stiffness problem which occurs in solving compressible fluid equations numbers, new governing were derived with assumption that there is a slight compressibility effect. The mechanisms of investigated by considering three-dimensional model cavity. Extensive wind tunnel tests verify computational scheme developed present study. results demonstrated strong pressure...
To reduce aerodynamic drag of a minivan, non-smooth surfaces are applied to the minivan’s roof panel design. A steady computational fluid dynamics (CFD) method is used investigate characteristics. The accuracy numerical validated by wind tunnel test. reduction effects rectangle, rhombus and arithmetic progression arrangement for circular concaves investigated numerically, then coefficient rectangle with better effect chosen as optimization objective. Three parameters, that is, diameter D...
Within the range of pressure from 9 to 28 MPa, mass flux 600 1500 kg/m2s, heat at inside wall 200 kW/m2, and temperature up 650 °C, experiments were conducted research forced convection transfer water in an inclined upward tube with inclination angle 20 deg inner diameter 26 mm. According experimental data, effects on analyzed detail. In subcritical region, it was found that characteristics are not uniform along circumference tube. Temperature top is always higher than bottom, which can be...
Large-eddy simulation (LES) and Detached-eddy (DES) were applied to a simple cavity model calculate the wind buffeting noise respectively. The results verified by tunnel experiments. show that LES is more suitable for calculation. method was employed automobile side-window noise. correctness of validated road test. In this paper, acoustically calculated sound pressure level (SPL) spectral curve used as initial signal acoustic post-processing. Four psychoacoustic objective parameters namely:...
The location selection of emergency supplies reserve site is a key problem to solve in order optimize the layout reserve. In this article, it based on features establish an objective model for si te and put forward comprehensive evaluation method alternative site; used object decision-making make research site. Through modeling analysis plans cases, single multi-level optimization researches were conducted provide quantitative reference when making decision reserves
摘要: 采用尺度自适应湍流模型对一个简易天窗进行数值模拟,通过与试验结果对比,验证数值计算方法的准确性。针对某轿车天窗风振噪声问题,进行不同来流速度条件下的数值模拟,模拟结果表明,轿车天窗风振噪声是声反馈和亥姆霍兹共振两种机制共同作用的结果。在发生亥姆霍兹共振时,通过对一个周期内天窗开口处涡运动对乘员耳旁处压力的影响分析,揭示天窗产生风振的压力特性。深入地研究剪切层失稳特性,对于最强的风振噪声,流向上和横向上速度的方均根值最大,表明亥姆霍兹共振加剧了剪切层里的扰动,产生的风振能量最高。在乘员舱发生亥姆霍兹共振的风速条件下,随着乘员人数的增加,风振噪声的峰值声压级有所降低,与之相关的频率变化很小。
Due to the uncertainty of major influential factors in emergency logistics transportation path optimization, this paper intends describe those uncertain factors, such as time, safety factor and costs, etc. by using trapezoidal fuzzy numbers. And then establishes a multi-objective optimization model according previous described decision-making matrix with The following theoretical derivation numerical examples prove feasibility suggested model.
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A dynamic model using a discrete phase approach was developed to study dust pollution on minivan's side and rear surfaces. Numerical simulations, validated by road tests, analyzed concentration distribution. significant factor in sidewall is the pressure difference inside outside wheel cavity, particularly behind which affects about 40% of sidewall. Large trailing vortices at create low-pressure zone, leading characterized low concentration, large area, dispersed regions. Aerodynamic devices...