• The calculation results showed that the friction factor and apparent viscosity of hydrate slurries increase with increasing pressure and flow rate.

    计算结果表明压力液体流量大的体系,摩擦阻力系数表观粘度值均较高。

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  • Contrastive simulation research on heat - transfer factor, friction factor and fin structure of offset strip fin heat exchanger affect heat - transfer property by compiling computer programs.

    采用计算机编程错位片型板翅换热器传热固子、摩擦因子翅片结构传热性能影响进行了数值模拟对比研究

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  • Experimental results show the change of friction factor is correlative with the difference of running temperature and installation temperature but not the force time.

    经过数据整理得出了以下结论摩擦系数大小变化决定于运行温度安装温度差推动次数”无关。

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  • The friction factor obtained from the experiments increases with the surface roughness increase when the relative roughness is greater 1%.

    实验结果表明壁面粗糙度超过1%时摩擦系数随着壁面相对粗糙度增加而增加

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  • In high Reynolds number range of 10,000 ~ 90,000, the flow friction factor, local and average convection heat transfer coefficients were determined.

    10,000 ~ 90,000雷诺数范围内,测量流动摩擦系数局部平均对流换系数

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  • The friction factor between two tooth surfaces of instrument gears during one meshing process is imitatively measured in this paper under the condition of ultra-low-speed.

    本文极低速情况,模拟测定仪表齿轮齿啮合过程齿轮齿摩擦系数变化情况。

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  • Soft, slippery, strong grip strength, good flexibility, fine performance of ozone proof, hardwearing, oil stain proof. A smaller friction factor Long service life.

    该胶圈柔软光滑弹性、抗臭氧、耐磨性好,摩擦系数波动范围使用寿命

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  • According to the design requirements of braking deceleration and distribution proportion between braking forces of front and rear wheel, a procedure of calculation for friction factor is provided.

    根据设计要求制动减速度动力分配提供摩擦系数计算方法和顺序,用于合理确定台试时的摩擦系数允差。

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  • The results indicate the friction factor will be reduced with the increasing silicon adding amount.

    结果表明摩擦系数硅助剂添加增加而降低;

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  • But the theory about the flow regime of the wave boundary layer, the wave friction factor, the bed shear stress and the initiation of sediment motion has not developed very well.

    而且波浪是海岸地区一个非常重要海洋水动力因素,波浪作用下底部边界层、底阻系数、剪应力泥沙起动理论成熟

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  • The conditionality between the flow rate and the pipe diameter is discussed when the friction factor is fixed.

    文中分析摩擦阻力系数一定的情况下,流量管径的制约关系。

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  • This paper presents a method of calculating the static sliding friction factor between zigzag slot and pin. A brief description of the fuse zigzag slot mechanism is given.

    该文给出了求解惯性筒上曲折之间滑动静摩擦系数一种方法介绍引信曲折槽机构

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  • The results show that the friction factor measured is reliable and the computation method is practical.

    通过试验证明了测定摩擦阻力系数可信的,拟定的计算方法实用的。

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  • Aimed at aerostatic guideway, a two dimensional distribution of air pressure and effect factor on the friction force were analyzed under high speed working conditions.

    以静压气浮导轨为研究对象,导轨气浮块底部气体压力分布规律影响摩擦力因素进行了理论分析。

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  • During the treatment of a particle field the effect of particle diameter, specific weight, rigidity of material and friction factor, etc on particle movement has been taken into account.

    处理颗粒考虑到颗粒直径比重材料刚度摩擦系数颗粒运动影响

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  • The larger specific gravity of fine iron ore results in an increase of friction factor of dense phase conveying and has certain influence on various parameters.

    铁矿比重大使摩擦系数增大输送各种参数一定影响

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  • The aluminum alloy caterpillar track, the friction factor is small, pulls the piece to be smooth, sur - stainless steel wear-resisting frame.

    铝合金链轨磨擦系数平顺外加不锈钢耐磨边框

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  • The swatch values of friction factor of three kinds of precast buried heating pipe and backfilling sand is calculated.

    通过施工变量、运行变量工程测量及计算得到种规格预制直埋供热管道回填砂的摩擦系数样本

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  • A new coefficient of Prandtl's relation was obtained from the experimental data. Compared with three conventional relations of friction factor, the range of Reynolds number was extended.

    实验结果基础上提出了普朗摩擦系数关系式系数,常用的摩擦系数关系式相比,扩大了普朗特摩擦系数关系式的雷诺数应用范围

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  • Through calculating friction factor and operating point of pump or fun of two examples on fluid mechanics, methods using solver and curve-fitting in EXCEL were introduced.

    通过对流体力学中沿程阻力系数与风机工作点等问题求解,介绍了EXCEL单变量求解器和曲线合的方法

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  • UHMW-PE set in front of panel, it can lower friction factor between vessel and fender, lower the shear strength while vessel berthing, and raise utility of fender life.

    防冲前面安装超高分子量聚乙烯,减小船舶摩擦系数,大大降低船舶靠泊剪切,从而提高护舷使用寿命。

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  • Analyses parameter have inclined Angle, pipe diameter size, gas liquid ratio and friction factor and so on.

    分析参数倾斜角度管径大小摩阻系数

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  • Influential factors of friction factor of head loss are analyzed by adopting artificial neural network (ANN).

    采用神经网络(ANN)方法沿程水头损失系数影响因素进行了分析。

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  • In the paper, the formula of economic friction factor for hydronic heating system with intermediate boosting pump station and different laying mode is derived theoretically.

    本文从理论上推导出带中间增压泵不同敷设方式热水供热经济比摩阻计算公式。

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  • The error analysis of different empirical formula of friction factor is done and the applicable range of these formula is given as well.

    笔者计算摩擦系数一些经验公式进行误差分析,对经验公式的应用范围提出了个人的看法。

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  • Then the FEM simulation was applied to study the influence of friction factor and initial forging temperature on maximum forming force, which provided reference on finishing process for similar parts.

    通过有限元模拟进一步研究整形温度摩擦系数最大载荷影响规律,此类零件的局部精整工艺制定提供了理论参考

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  • Because of the complexity of turbulent flow, it is a tough issue to determine its friction factor.

    鉴于紊流运动复杂性沿程阻力系数确定起来较为困难。

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  • To meet the requirement for the diamond-like carbon thin films with low friction factor, the tungsten-doped diamond-like carbon(W-DLC)thin films prepared through PECVD were studied in depth.

    为了满足制备较厚摩擦系数金刚石薄膜DLC)耐磨镀层的实际需求在等离子增强化学气相沉积的类金刚石薄膜(W-DLC)中掺钨进行了系统研究。

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  • With each insert, friction factor characteristics and the effect of radiant heat transfer enhancement to overall heart transfer coefficients are analysed.

    不同翅片内插件高温换热管辐射传热整体换热系数影响进行了讨论。

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  • The friction factor obtained from the regression analyses of the peak strength, residual strength and confining pressure are roughly equal and the cohesion is reduced by 54.4%.

    峰值强度残余强度回归得到摩擦系数大致相当聚力则减低54.4%。

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