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16篇 您的检索式:作者名="Xueming SHAO"
    题名 作者 年代 出处 被引量
1A direct-forcing fictitious domain method for particulate flows显示文摘Zhaosheng Yu Xueming Shao 2007Journal of Computational Physics2007,,1:1
2Combination of the direct-forcing fictitious domain method and the sharp interface method for the three-dimensional dielectrophoresis of particles显示文摘Yang Shi Zhaosheng Yu Xueming Shao 2011Powder Technology2011,,1:1
3NUMERICAL FLOW VISUALIZATION OF A MIXING LAYER显示文摘The Kelvin-Helmhotz rollup of three-dimensional time-developing mixing layers is simulated numerically. Dye lines or fluid interfaces, often visualized in experiments, are presented by computing the passive scalar at high Peclet number. The scalar contours reveal the mushroom-shaped streaklines observed in many experiments [l]and uncover by far more exquisite structures beyond experimental observations. The hydric bubbles released at a constant time interval are also simulated numerically. To help understand the visualization results, we analyze the behavior of the coherent structures, such as the streamwise ribs and the spanwise rollers. A comparison between the vortical structure and the passive scalar contours indicates that the wrapping by the vortices largely dominates the evolution of the passive scalar.Lin, Jianzhong Yu, Zhaosheng Shao, Xueming 1998Journal of Hydrodynamics1998,10,4:1
4Hydrody-namic studies on two traveling wavy foils in tandem arrangement显示文摘DENG Jian SHAO Xueming YU Zhaosheng 2007Physics of fluids2007,,11:1
5Facile fabrication of branched-chain carbohydrate chips for studying carbohydrate-protein interactions by QCM biosensor显示文摘A novel approach for fabricating branched-chain(BC) carbohydrate chips to study carbohydrate-protein interactions using Quartz Crystal Microbalance(QCM) biosensor was developed. This approach utilizes functional alkynyl-branch molecule modified chip surfaces, which through the terminal alkynyl group for covalent linking of unprotected azide-carbohydrates. The unprotected azide-carbohydrates were syhthesized in one-step using 2-azido-1,3-dimethyl-imidazolinium as catalyst, avoiding complex chemical modifications. Additionally, the branch surface modified with the carbohydrates not only supplies more specific binding site but also reveals significant cluster effect. To exemplify the sugar cluster effect on BC carbohydrate chips, BC Galactose and Mannose chips prepared in this work were used to determine carbohydrate-lectin interactions using QCM biosensor. The results clearly showed that BC chip significantly improves the detection sensitivity compared with the straight-chain(SC) chip. More importantly, the BC galactose chip sensitivity was enhanced 40% compared with the SC galactose chip.Yuchao Lu Siyu Song Chenxi Hou Shuang Pang Xueming Li Xiaowen Wu Chen Shao Yuxin Pei Zhichao Pei 2018Chinese Chemical Letters2018,29,1:1
6Hydrodynamicmechanism of fully passive energy harvester from ocean current显示文摘Deng Jian Dai Bin Shao Xueming 2013Journal of Zhejiang University- Engineering Science2013,47,10:1
7A direct-forcing fictitious domain method for particulate flows 显示文摘Yu Zhaosheng Shao Xueming 2007Journal of Computational Physics2007,227,1:1
8Study on void formation in multi-layer woven fabrics显示文摘Hu Jinlian Liu Yi Shao Xueming 2004Composites Part A:Applied Science and Manufacturing2004,35,5:1
9A direct-forcing fictitious do-main method for particulate flows 显示文摘Yu Zhaosheng Shao Xueming 2007Journal of Compu-tational Physics2007,227,1:1
10Combination of thedirect-forcing fictitious domain method and the sharp in-terface method for the three-dimensional dielectrophoresisof particles 显示文摘Shi Yang Yu Zhaosheng Shao Xueming 2011Powder Technology2011,210,1:1
11Evaluation of the Viscous Heating Induced Jam Fault of Valve Spool by Fluid-structure Coupled Simulations显示文摘Deng Jian Shao Xueming Fu Xin 2009Energy Conversion and Management2009,50,4:1
12Study on void formation in multi-layer woven fabrics显示文摘Hu Jinlian Liu Yi Shao Xueming 2004Composites Part A:Applied Science and Manufacturing2004,35,5:1
13Time-optimal guidance for intercepting moving targets with impact-angle constraints显示文摘The minimum-time path for intercepting a moving target with a prescribed impact angle is studied in the paper.The candidate paths from Pontryagin’s maximum principle are synthesized,so that each candidate is related to a zero of a real-valued function.It is found that the real-valued functions or their first-order derivatives can be converted to polynomials of at most fourth degree.As a result,each candidate path can be computed within a constant time by embedding a standard polynomial solver into the typical bisection method.The control strategy along the shortest candidate eventually gives rise to the time-optimal guidance law.Finally,the developments of the paper are illustrated and verified by three numerical examples.Yuan ZHENG Zheng CHEN Xueming SHAO Wenjie ZHAO 2022Chinese Journal of Aeronautics2022,35,7:0
14Mechanism analysis of hysteretic aerodynamic characteristics on variable-sweep wings显示文摘Variable-sweep wings have large shape-changing capabilities and wide flight envelops,which are considered as one of the most promising directions for intelligent morphing UAVs.Aerodynamic investigations always focus on several static states in the varying sweep process,which ignore the unsteady aerodynamic characteristics.However,deviations to static aerodynamic forces are inevitably caused by dynamic sweep motion.In this work,first,unsteady aerodynamic characteristics on a typical variable-sweep UAV with large aspect ratio were analyzed.Then,deep mechanism of unsteady aerodynamic characteristics in the varying sweep process was studied.Finally,numerical simulation method integrated with structured moving overset grids was applied to solve the unsteady fluid of varying sweep process.The simulation results of a sweep forward-backward circle show a distinct dynamic hysteresis loop surrounding the static data for the aerodynamic forces.Compared with the static lift coefficients,at the same sweep angles,dynamic lift coefficient in sweep forward process are all smaller,while dynamic sweep backward lift coefficient are all larger.In addition,dynamic deviations to static lift coefficient are positively related with the varying sweep speeds.Mechanism study on the unsteady aerodynamic characteristics indicates that three key factors lead to the dynamic hysteresis loop in varying sweep process.They are the effects of additional velocity caused by varying sweep motion,the effects of flow hysteresis and viscosity.The additional velocity induced by sweep motion affects the transversal flow direction along the wing and the effective angle of attack at the airfoil profile.The physical properties of flow,the hysteresis and viscosity affect the unsteady aerodynamic characteristics by flow separation and induced vortexes.Lifang ZENG Liu LIU Xueming SHAO Jun LI 2023Chinese Journal of Aeronautics2023,36,5:0
15Combination of direct-forcing fictitious domain method and sharp interface method for dielectrophoresis of particles显示文摘In this paper,we combine the direct-forcing fictitious domain(DF/FD) method and the sharp interface method to resolve the problem of particle dielectrophoresis in two dimensions.The flow field and the motion of particles are solved with the DF/FD method,the electric field is solved with the sharp interface method,and the electrostatic force on the particles is computed using the Maxwell stress tensor method.The proposed method is validated via three problems:effective conductivity of particle composite between two planar plates,cell trapping in a channel,and motion of particles due to both conventional and traveling wave dielectrophoretic forces.Yang Shi Zhaosheng Yu Xueming Shao 2010Particuology2010,8,4:0
16Effects of finite-size neutrally buoyant particles on the turbulent channel flow at a Reynolds number of 395显示文摘A direct-forcing fictitious domain(DFFD) method is used to perform fully resolved numerical simulations of turbulent channel flows laden with large neutrally buoyant particles. The effects of the particles on the turbulence(including the mean velocity,the root mean square(RMS) of the velocity fluctuation, the probability density function(PDF) of the velocity, and the vortex structures) at a friction Reynolds number of 395 are investigated. The results show that the drag-reduction effect caused by finite-size spherical particles at low particle volumes is negligibly small. The particle effects on the RMS velocities at Re_τ = 395 are significantly smaller than those at Re_τ = 180, despite qualitatively the same effects, i.e., the presence of particles decreases the maximum streamwise RMS velocity near the wall via weakening the large-scale streamwise vortices,and increases the transverse and spanwise RMS velocities in the vicinity of the wall by inducing smaller-scale vortices. The effects of the particles on the PDFs of the fluid fluctuating velocities normalized with the RMS velocities are small, regardless of the particle size, the particle volume fraction, and the Reynolds number.Zhaosheng YU Chenlin ZHU Yu WANG Xueming SHAO 2019Applied Mathematics and Mechanics(English Edition)2019,40,2:0
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