因次

模拟结果显示，模型的无因次传热系数h~+与液膜雷诺数ReL呈明显的线性关系，且模型值比实验值偏低28%左右。

The result of numerical simulation indicated that it was linear relationship between the zero dimension heat transfer coefficient and the Reynolds number of film . The error between the numerical value and the experiment value was basically under 28 % .

因次分析π定理的应用理论研究

Study on Application Theory of the π Theorem for Dimension Analysis

不要因次要问题而冲淡了中心任务。

Don 't stress minor issues at the expense of the central task .

运用因次分析、相似准则和BP神经网络理论建立了固体废弃物热解的参数群预测模型。

The parameter group anticipating model of waste pyrolysis was established .

而J函数就是通过无因次化处理消除了渗透率和孔隙度的影响。

J function can eliminate the impact of permeability and porosity by dimensionless treatment .

气井新的无因次IPR方程及应用

A New Dimensionless IPR Equation for Gas Wells and its Application

引入无因次量Mo数和Eo数，研究了液膜破裂时间的变化趋势。

Introducing the dimensionless quantity Mo and Eo investigate the trend of break time .

针对溶液间歇结晶过程的特点，定义并关联了无因次变量K和K，用于对结晶过程中成核和生长两阶段进行定量识别。

Two new zero dimension variables , K and K , concerning the stage identification of solution batch crystallization process were defined in this paper .

气井无因次IPR方程的剖析

An analysis of dimensionless IPR equations for gas wells

应用无因次IPR方程评价油层污染方法探讨

An approach to application of dimentionless equation IPR for evaluation methods of pay zone contamination

通过分析绘制了销钉无因次等效应力最大值θ（max）的诺模图。

Through analysis , the monogram of the maximun value θ _ ( max ) of dimensionless equivalent stress is drawn .

无因次IPR曲线通式的推导及线性求解方法

The derivation of a general formula for dimensionless IPR curves and the method of linear solution

含FeO熔渣起泡指数的因次分析

Dimensional Analysis of Foaming Index for FeO-Bearing Slags

对于添加晶种的KNO3&H2O间歇结晶过程，模拟分析的结果表明：无因次变量K和K的数值均随着晶核形成过程而减小，随着晶核生长过程而增大。

For seeded crystallization of potassium nitrate in water , the results calculated showed the values of K and K would be decreased with nucleation process and increased with crystal growth process .

由此说明，无因次IPR曲线模型是一种经济实用的预测水平气井产能的方法。

The dimensionless IPR curve model appears to pro - vide a cost-effective way of predicting horizontal gas well deliverability .

无因次IPR曲线在水平气井产能预测中的应用该系数是无量纲的，并且具有很强的实用性和适应性。

Application of Dimensionless IPR Curve for Production Potential Forecast in Horizontal Well It is dimensionless and has good applicability .

从应变能密度概念出发，运用无因次参量R讨论了裂尖附近处元素的三轴应力状态和裂尖约束程度。

Based on the concept of strain energy density , the triaxial stress state and constraint of the elements of the crack near by tip are discussed by using the nondimensional parameter R .

因次，我们认为Fas信号途径在高糖诱导的细胞凋亡中起着重要作用，而线粒体途径则是细胞因子引起细胞凋亡的主要途径。

As a conclusion , Fas signal pathway is important in high glucose-induced apoptosis , while mitochondria pathway plays a key role in cytokine-induce apoptosis .

聚合物熔体物性参数（如密度ρ、导热系数k以及热容Cp等）、管长和管内流速对θ均产生影响，被合并为管子的无因次轴向距离。

Polymer characteristic ( density p , heat conducting k , heat capacity C ~ , etc ), length of tube and velocity of folw will affect melt temperature rises , these factors are untied a reduced distance in axis .

又选用CO2-H2O系统对塔的液膜传质特性进行了研究，并提出了液膜传质系数的无因次准数关联式；

By measuring characteristics of mass transfer of liquid-film with CO2-H2O System an equation of dimensionless groups for liquid-film mass transfer coefficients has been proposed .

总矿焦比增加时，软熔带顶点降低，根部升高，形状度I增大，无因次高度h顶减少，料柱阻力增加。

With the increase of total ore / coke , the cohesive zone top lowers , the bottom rises , the form index ( I ) increases , the free factor height decreases , and the resistance of burden increases .

在推导相似准则时，把普遍采用四维因次化为三维的，即把温度单位K或℃化为m~2／s~2，由此大大简化了相似准则推导过程。

While deriving the similarity criteria , common four-dimension is reduced to three-dimension , i. e. temperature unit ( K or ℃ ) to ( m ￣ 2 / s ￣ 2 ), thus simplifying the derivation of similarity criteria greatly .

很多学者对Einstein推移质公式建立过程中的冲刷概率、泥沙无因次单步运行距离和泥沙交换时间等方面进行了深入研究与改进，并得到了改进后的推移质输沙率公式。

The erosion probability of particles , the nondimensional step length and the exchange time used in Einstein 's bed load function were modified by more scientists and several modified formulas have been proposed .

将凸轮转角无因次化作为节点变量，以NURBS形式描述了凸轮机构的无因次位移、速度、加速度和跃度等运动曲线。

Many dimensionless motion curves such as displacement , velocity , acceleration , jerk etc , can be all described with NURBS , regarding the dimensionless cam rotation angle as the node variable .

对比了Mishra＆.Caudle相关式、二次式和指数式三类无因次IPR方程的处理方法、性能特点和无固次采气指数。

The analysis methods , characteristics and dimensionless productivity indexes of three types of dimensionless IPR equations , including Mishra and Caudle 's correlation , quadratic and exponential equations , are compared .

文中提出新的无因次量N并解释了其物理意义，还指出Ma-N图上存在一条中性稳定曲线。

The authors suggest a new dimensionless quantity N and try to interpret its physical meaning and predict a " neutral stability curve " in Ma-N map .

基于Arps的递减方程，本文研制了一个用于产量递减分析的无因次累积产量和无因次时间的新型典型曲线。

New type curves of dimensionless cumulative production versus dimensionless time for production decline analy-sis are developed based on Arps ' decline equation .

通过对发动机气道内气体流动过程的相似分析，在雷诺Re准则数足够大的前提下，非定性准则欧拉Eu数和相似不变量无因次涡流NR保持不变。

By the similarity analysis of flow process in engine 's port , it 's found that at the base that Renold number is big enough , in-qualitative rule Euler number Eu and similar invariable dimensionless swirl NR keep unaltered .

冠层上无因次湍流风速分量u、w标准差和无因次湍流动能耗散率与局地Monin-Obukhov长度相关，而在冠层内不存在这种相关性；

Above the canopy both the dimensionless standard deviation of u and w and dimensionless turbulence , dissipation rate were functions of local Monin-Obukhov length , while within the canopy those variables did not show the correlations .

利用CFD软件模拟计算了两种气流组织方式下室内甲醛的浓度场，分析了室内浓度场、无因次浓度、空气交换效率的分布规律，并与传统计算方法的结果进行了比较。

The paper calculates the concentration of HCHO respectively in two kinds of airflows , analyzes the distributions of the concentration field , non-dimensions concentration field , and air change efficiency , and compares the results of calculation with others using CFD method .