A5100367821- Fluid Dynamics and Turbulent Flows
- Heat Transfer Mechanisms
- Combustion and flame dynamics
- Turbomachinery Performance and Optimization
- Computational Fluid Dynamics and Aerodynamics
- Fish Ecology and Management Studies
- Hydrology and Sediment Transport Processes
- Hydrology and Watershed Management Studies
- Plasma and Flow Control in Aerodynamics
- Lattice Boltzmann Simulation Studies
- Advanced Numerical Analysis Techniques
- Cyclone Separators and Fluid Dynamics
- Geophysics and Gravity Measurements
- Gas Dynamics and Kinetic Theory
- Heat Transfer and Optimization
- Flow Measurement and Analysis
- Ocean Waves and Remote Sensing
- Machine Fault Diagnosis Techniques
- Random lasers and scattering media
- Biomedical Text Mining and Ontologies
- Advanced machining processes and optimization
- Fluid Dynamics Simulations and Interactions
- Computational Geometry and Mesh Generation
- Computational Physics and Python Applications
- Traditional Chinese Medicine Studies
National University of Defense Technology
2012-2024
Ansys (United States)
2020
Jiangsu University
2018
Iowa State University
2017
National Taiwan University
2010-2011
Georgia Institute of Technology
2010
This study employs a loosely coupled method to analyze the flow, combustion, and structural response mechanisms of three-dimensional axisymmetric scramjet under combustion–thermal–structural coupling over 30 s duration. On macroscopic timescale, results from Reynolds-averaged Navier–Stokes (RANS) reveal three distinct operating stages induced by effects: combustion enhancement, mode transition, stabilization. The characteristics multiple fields at each stage have been explored. microscopic...
A multi-channel gliding arc (MCGA) plasma with an average power of 6000 W is utilized to control the flame flashback in a dual-mode scramjet combustor cavity flameholder. Optical measurements, including synchronous high-speed CH* emissions and schlieren, simultaneous camera oblique view emission, accompanied by three-dimensional RANS simulation, were employed characterize or without MCGA plasma. The results show that typical cycle can be observed period ∼2 ms combustor. back pressure reduced...
In turbine engines, there is a clearance between the rotating blade and stationary casing. The flow in tip gap, which mostly transonic, has significant impact on overall thrust safety performance of engine. This study aims at elucidating mechanism establishment simplified gap model. this study, basic structure pressure distribution transient field region are first determined via schlieren techniques measurements, respectively. Based these results, we develop rapid modeling technique analyze...
In order to reduce leakage flow, cavity tips are often used in high-pressure turbines, at the cost of higher thermal load compared flat tips. To better control flow and heat transfer blade tip, a cavity-filling geometry is proposed this paper, effects filling area also investigated by numerical simulation. The results indicate that new geometries maintain advantages terms aerodynamic performance. With increasing, shows trend initially increasing then decreasing. When front 15% tip chord...
Purpose The pin fin is applied into a Lamilloy cooling structure which broadly used in the leading edge region of modern gas turbine vane. purpose this paper to investigate effects layout, diameter and shape fins on flow heat transfer characteristics newly improved at Design/methodology/approach A numerical method diverse locations are Lp = 0.35, 0.5, 0.65. varies from 8 mm 32 mm. Three different ratios root roof for also investigated, i.e. k 1, 2. Reynolds number ranges 10,000 50,000....
In the present study, optimal objective effect on thermal performance of a rectangular duct with pin fins and dimples/protrusions is introduced. Four different objectives are selected (entropy generation, entransy dissipation, enerty, volume goodness factor). The baseline k−ω turbulence model applied to solve governing equations. multi-island genetic algorithm (MIGA) used find solution. results indicate that sensitive objective. By using dimple/protrusion configuration, Nusselt number...
This article studies the effects of multi-field coupling on S-duct by a self-developed fluid-solid-thermal bi-directional code. The flow field inside is complex with various vortices as airflow turns. results indicate that total pressure recovery coefficient and distortion index (DI) change rapidly at beginning reach steady state about 100s. σ decreases 12%, DI increases 2% compared to starting point. Structural deformation, size separation zone, wall temperature changes over time,...
The tip flows in modern gas turbines are primarily transonic under realistic conditions and significantly impact the overall thrust performance safety of turbines. This study is aimed at providing a deeper understanding mechanisms underlying controlling flow characteristics. Particle image velocimetry (PIV) Schlieren oil visualizations were performed to reveal basic structure fields. A computational fluid dynamics model was developed, experimental results validated its accuracy. FLUENT 18.0...
This article numerically studied the flow and heat transfer characteristics of full-ribbed fluted tip a rotor with four types distribution cooling films, namely, mid-arc uniform film at bottom groove, on full perimeter ribs, suction-side rib, pressure-side rib. The evolution secondary in clearance under these conditions was discussed, effect position leakage also studied. results showed that films ribs were more conducive to lower rates can reduce total energy losses. Adding single-side rib...
To improve aerodynamic performance, cavity tips are often used in high-pressure turbines to reduce leakage flow. However, the generate more vortices compared flat tips, resulting increased thermal load on blade tips. suppress vortex intensity, present study proposes a novel configuration by introducing slot at bottom. The influences of geometry parameters and aerothermal performance investigated through numerical simulations. results show that eliminates pressure-side corner vortices, does...
PDF HTML阅读 XML下载 导出引用 引用提醒 ENU诱变草鱼及其雌核发育后代的微卫星遗传分析 DOI: 作者: 作者单位: 上海海洋大学 农业部淡水水产种质资源重点实验室, 上海 201306 作者简介: 王成龙(1989-),男,硕士,研究方向为动物遗传育种与繁殖.E-mail:long836597116@hotmail.com 通讯作者: 中图分类号: S917 基金项目: 国家863计划主题项目（2011AA100403）. Microsatellite genetic analysis of ENU mutagenesis grass carp and gynogenesis offspring group Author: Affiliation: Key Laboratory Genetic Resources for Freshwater Aquaculture Fisheries, Shanghai Ocean University, 201306, China Fund Project: 摘要 | 图/表 访问统计 参考文献 相似文献 引证文献 资源附件...