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Numerical investigation on the aerodynamic drag reduction based on bottom deflectors and streamlined bogies of a high-speed train: 《Journal of Central South University》2024年第9期3312-3328,共17页JIANG Chen LONG jn-lan LI Yan-ong GAO Guang-jun FRANKLIN Eze; Project(2020YFA0710901)supported by the National Key Research and Development Program of China;Project(2023JJ30643)supported by the Natural Science Foundation of Hunan Province,China;Project(12372204)supported by the National Natural Science Foundation of China;Project(2022ZZTS0725)supported by the Self-exploration and Innovation Project for Postgraduates of Central South University,China。; The complex structure of the bottom of a high-speed train is an important source of train aerodynamic drag.Thus,improving the bottom structure is of great significance to reduce the aerodynamic drag of the train.In th...; 关键词：high-speed train numerical simulation drag reduction DEFLECTOR streamlined design

Interaction Mechanisms between Natural Debris Flow and Rigid Barrier Deflectors:A New Perspective for Rational Design and Optimal Arrangement: 《Computer Modeling in Engineering & Sciences》2024年第5期1679-1699,共21页Yu Huang Beilei Liu Dianlei Feng Hao Shi; supported by the National Natural Science Foundation of China(Grant Nos.42120104008 and 42207198).; Rigid barrier deflectors can effectively prevent overspilling landslides,and can satisfy disaster prevention requirements.However,the mechanisms of interaction between natural granular flow and rigid barrier deflector...; 关键词：Rigid barrier deflectors deflector angle single-barrier dual-barrier arrangements viscous debris flow over-spilling delta-plus-SPH

Effects of bottom deflectors on aerodynamic drag reduction of a high-speed train被引量：5: 《Acta Mechanica Sinica》2022年第5期27-41,I0001,共16页Wen Liu Zhanling Ji Dilong Guo Guowei Yang Gaowei Zhou Kunhua Ren; supported by the National Key Research&Development Projects(Grant No.2017YFB0202801);the Strategic Priority Research Program of the Chinese Academy of Sciences(class B)(Grant No.XDB22020000);Research project of Chinese Academy of Sciences(Grant No.XXH13506-204).; Inspired by the fact that bogies and bottom equipment generally contribute a great deal of aerodynamic drag to high-speed trains,this paper puts forward a simple method of mounting some small deflectors before and/or ...; 关键词：High-speed train Drag reduction Bottom deflector BOGIE Flow control

Experiment and Large-Eddy Simulation on Free Air Jets Issuing from a Rectangular Nozzle with Deflectors: 《Journal of Flow Control, Measurement & Visualization》2021年第4期73-92,共20页Riku Ouchi Takahiro Kiwata Naoki Kajitani Hiroshi Teramoto; The purpose of the present study was to establish a passive flow control method for a rectangular jet using two types of deflectors installed symmetrically inside a nozzle. This deflector in a rectangular nozzle gener...; 关键词：JET Rectangular Nozzle DEFLECTORS Flow Control Flow Measurement Numerical Simulation LES

Influences of Lateral Double-Layered Deflectors on Cooling Performance of Air-Cooled Condenser被引量：3: 《Journal of Thermal Science》2021年第6期2164-2177,共14页HUANG Wenhui HUANG Xianwei YANG Lijun DU Xiaoze; The National Natural Science Foundation of China(Grant No.51476055,51821004);the National Basic Research Program of China(Grant No.2015CB251503);the Fundamental Research Funds for the Central Universities(Grant No.2018QN036)are gratefully acknowledged for supporting this research.; The cooling performance of air-cooled condenser(ACC)is susceptible to adverse impacts of ambient winds.In this work,three kinds of lateral double-layered deflectors installed under the ACC platform are proposed to wea...; 关键词：air-cooled condenser lateral double-layered deflectors cooling capacity turbine back pressure wind speed and direction

Numerical studies on four-engine rocket exhaust plume impinging on flame deflectors with afterburning被引量：3: 《Defence Technology（防务技术）》2021年第4期1207-1216,共10页Zhi-tan Zhou Chang-fang Zhao Chen-yu Lu Gui-gao Le; This paper studies the four-engine liquid rocket flow field during the launching phase.Using threedimensional compressible Navier-Stokes equations and two-equation realizable k-epsilon turbulence model,an impact model...; 关键词：Four-engine rocket AFTERBURNING Impinging flow field Different deflectors Numerical simulations

Assessment of conventional and air-jet wheel deflectors for drag reduction of the DrivAer model: 《Advances in Aerodynamics》2021年第1期512-539,共28页Kaloki L.Nabutola Sandra K.S.Boetcher; Aerodynamic drag is a large resistance force to vehicle motion,particularly at highway speeds.Conventional wheel deflectors were designed to reduce the wheel drag and,consequently,the overall vehicle drag;however,they...; 关键词：Vehicle aerodynamics Wheel and wheelhouse aerodynamics Automotive Active flow control Passive flow control DrivAer

Fin performance of 3-D aerator devices with backward lateral deflectors被引量：1: 《Journal of Hydrodynamics》2020年第2期410-413,共4页Jian-rong Xu Jian-hua Wu Yu Peng Fei Ma; Project supported by the National Natural Science Foundation of China(Grant No.50879021).; In the present work,a 3-D aerator device with backward lateral deflectors,called BLD-3-D aerator device,is developed,and the lateral cavity and fin performance of the BLD-3-D aerator device are experimentally investig...; 关键词：AERATOR backward lateral deflector BLD-3-D aerator device cavity water fin

A low-energy ion spectrometer with half-space entrance for three-axis stabilized spacecraft被引量：1: 《Science China(Technological Sciences)》2019年第6期1015-1027,共13页HU RenXiang SHAN Xu YUAN GuangYuan WANG ShuWen ZHANG WeiHang QI Wei CAO Zhe LI YiRen CHEN ManMing YANG XiaoPing WANG Bo SHAO SiPei LI Feng ZHONG XiaoQing FAN Dan HAO XinJun FENG ChangQing SU ZhenPeng SHEN ChengLong LI Xin DAI GuYue QIU BingLin PAN ZongHao LIU Kai XU ChunKai LIU ShuBin AN Qi ZHANG TieLong WANG YuMing CHEN XiangJun; supported by the National Natural Science Foundation of China(Grant No.41327802);the CAS Key Research Program of Frontier Sciences(Grant No.QYZDB-SSW-DQC015); A low-energy ion spectrometer(LEIS) for use aboard three-axis stabilized spacecraft has been developed to measure ion energy per charge distribution in three-dimensional space with good energy-, angular-and temporal-r...; 关键词：LOW-ENERGY ION SPECTROMETER three-dimensional measurement TOP-HAT electrostatic analyzer angular scanning DEFLECTORS simulation ground calibration

Optimization on Inlet Deflectors Structural Parameters of a Natural Draft Counter-flow Wet Cooling Tower被引量：1: 《中国电机工程学报》2013年第11期I0005-I0005,共1页H U Danmei ZONG Tao ZHANG Zhichao ZHANG Jianping; 关键词：湿式冷却塔结构参数优化自然通风引下线逆流节能问题发电行业冷却过程

DEFLECTORS