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drag force     
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  阻力
     the following research results were obtained for the supersonic blunt body,the plasma layer of peak electron number density N_e=10~(11)~5×10~(14)/cm~3 can be formed under the condition of total temperature of the jet T0j=2000-3000K and the mass fraction of 0.02 and 0.05 for kalium,and the drag force coefficient of 35% is decreased.
     研究结果表明:在喷流总温T0j=2000K-3000K和喷流介质钾元素的质量分数为0.02和0.05的情况下,在模型周围可形成峰值电子数密度Ne=1011~5×1014/cm3的等离子体层,而且模型的阻力可降低35%。
短句来源
     By applying Morison equation and digging force formula the drag force and digging resistant force are obtained and integrated into the virtual model of underwater excavator.
     利用Morison方程和挖掘力公式分别推导了水下挖掘设备所受到的水阻力和挖掘阻力,并将其引入水下挖掘机器人的虚拟模型中,对其挖掘过程进行了模拟。
短句来源
     Moreover, the Darcy-Weisbach friction factor and the drag force on an element are converted from the Manning's n and flow depth.
     还给出了达西一韦西巴赫(Darcy—Weisbach)系数与水深的关系及曼宁系数与作用在三维单元水体上芦苇阻力间的关系。
短句来源
     Current Situation and Prospect of Study on Drag Force Characteristics of Piles
     桩基绕流阻力特性研究现状与展望
短句来源
     Thixotropy of Bingham Fluid and Drag Force Flowing around Sphere in the Fluid
     宾汉流体的触变性及球体绕流阻力
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  拖曳力
     Various methods of linearization of nonlinear drag force are introduced in this paper. The methods for direct calculation of zero and second order moment of nonlinear drag force have been developed.
     本文论述了非线性拖曳力的各种线性化方法,导出了非线性拖电力谱零阶矩和二阶矩的直接计算公式,并根据谱的零阶矩和二阶矩,提出了评价线性化方法的判定方法。
短句来源
     Two-dimensional numerical simulation with a given temperature field and negative buoyancy indicates that:(1) the mantle convection drag force plays an important control role to subducted depth and subducted rate. Its change from 100 MPa to 20 MPa results in decreases of the subducted depth from 231 km to 151 km and subducted rate from 10.79 mm/a to 5.46 mm/a;
     利用考虑温度场和负浮力的二维数值模拟表明:(1)地幔对流拖曳力对俯冲深度和俯冲速度有重要控制作用,从100MPa 到20MPa 的变化将导致俯冲深度由231km 减到151km,速率由10.79mm/a 减到5.46mm/a。
短句来源
     The study shows that the total drags acting on a hollow block are affected by the porosity in the same flow condition , that is, the bigger the porosity is, the smaller the drag force is.
     实验研究表明,对于不同的空心块体,在相同的水流条件下,受到的水平拖曳力随块体的空心率影响较大,呈现空心率越大,水流拖曳力越小的变化规律。
短句来源
     ERROR ESTIMATION OF SECOND ORDER MOMENT OF LINEARIZED DRAG FORCE SPECTRUM
     线性拖曳力谱二阶矩的误差估计
短句来源
     (1) The effect of cylinder shape to the drag force.
     (1)块体形状对拖曳力的影响。
短句来源
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  曳力
     The results show that restitution coefficient and drag force are main factors affecting on heterogonous flow structure.
     结果表明,恢复系数和曳力是影响流化床内非均匀流动结构的主要因素。 恢复系数在能量方面主要表现在对颗粒碰撞耗散和动能的影响。
短句来源
     The synergy of gas-solid two-phase flow is showed by the ratio of drag force coefficient, CD/CDs<1.0. The synergy in the gas-solid two-phase flow system could be considered as the results of energy transfer and momentum transfer between gas phase and solid phase in which the energy consumption approaches the minimum.
     这种协同效应的表现形式是颗粒群中每个颗粒的平均曳力系数CD与单颗粒曳力系数CDs之比CD/CDs<1.0,协同效应的大小可以用准数Sy=1/(CD/CDs)描述.
     The main different influence of restitution coefficient and drag force on heterogeneous flow structure lies in particle agglomeration and bed height, respectively.
     曳力表征气固之间的作用力,决定了床层的膨胀高度,在能量方面主要表现为对动能和势能的影响。 二者对流动结构影响的对比来看,曳力的影响起主导作用。
短句来源
     Effects of Restitution Coefficient and Drag Force on Gas-solid Flow Behavior: A Two-fluid Model Simulation
     双流体模型中曳力及恢复系数对气固流动的影响
短句来源
     To describe the cluster phenomena and their effects on drag force, a new model of gas\|solid drag force is developed under the consideration of cluster effects using the energy minimization concept.
     为了解决现有经验或半经验模型的普适性问题,合理描述流动中经常发生的颗粒团聚现象及其对气固曳力的影响,从理论分析入手,运用最小能量的概念,将传统的CFD方法与宏观的系统分析方法相结合,建立了一个新的计及颗粒团聚效应的气固曳力理论模型.
短句来源
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  水平拖曳力
     The study shows that the total drags acting on a hollow block are affected by the porosity in the same flow condition , that is, the bigger the porosity is, the smaller the drag force is.
     实验研究表明,对于不同的空心块体,在相同的水流条件下,受到的水平拖曳力随块体的空心率影响较大,呈现空心率越大,水流拖曳力越小的变化规律。
短句来源
     It indicates that the bigger the angle is, the bigger the drag force is, under the condition of the cubic blocks.
     在正方形块体条件下,随着块体迎流面法线方向与水流流向夹角的增大,水平拖曳力也随之增大。
短句来源
     Meanwhile, the drag force coefficients change with the angle. The drag force coefficients get the smallest value when the angle is 20° ,the projective area becomes larger at the same time, so the drag forces show a growing tendency.
     同时,水平拖曳力系数随着夹角的变化也在不断发生变化,当夹角20°时水平拖曳力系数最小,但是由于水流作用面积增大,水平拖曳力总体上呈现随夹角的加大而增大的变化趋势。
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  drag force
The drag force and the filtration efficiency are determined both as functions of the ratio between the cylinder diameter and the distance between the axes of adjacent cylinders and as functions of the thickness and permeability of the shells.
      
The approximation formula for the drag force of a cylinder in contacting rows is obtained.
      
The drag force of a cylinder for this model is close to that for the fan model filter.
      
The expression is derived for the dimensionless drag force acting on the unit chain length as a function of the ratio of a particle radius to a half-distance between chain axes, a/h.
      
It is also shown that, at a/h = 1, the drag force of a particle contacting with four adjacent particles in the layer with square packing is equal to F = 44FSt, where FSt is the Stokes drag force of a spherical particle.
      
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