In chapter three, on the basis of the new anomalous magnetic Prandtl number in accretion disks, we study the effect of dissipation on magnetic instability of Keplerian disks.
第三章在新的反常磁普朗特数的基础上，我们研究了耗散过程对开普勒盘磁不稳定性的影响。
The effects of Reynolds number, Prandtl number and nanoparticle concentration on the convective heat transfer characteristics were investigated.
考察了Reynolds数、Prandtl数以及体积分数对流动换热的影响。
As the result shows, When Prandtl number increasing, That the torsion will distort the shape.
结果表明：对大普朗特数的流体，桡率将显著改变等温轮廓线的形状。
In the study of heat flow with buoyancy by using a k-ε model, the value of Prandtl number can affect the computed distributions of velocity and temperature.
采用k-ε双方程模型研究存在浮力的传热流动问题时，数学模型中的参数－紊动普朗特数的取值大小对模拟计算的流速和温度分布存在不同程度的影响。
Fourthly, according to the hydrodynamics and computational heat transfer, the flow and heat transfer model was set up. In this model, the interaction between solid particles and fluid was taken into account. Here, the conception of two-phase turbulent Prandtl number was given for the first time.
第四，从流体力学和计算传热学的角度出发，建立了液固两相流动传热模型，模型中考虑了固体颗粒与流体的相互作用及其对流动与传热的影响，同时首次提出了两相湍流普兰特数的概念。
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.
在实验结果的基础上提出了普朗特摩擦系数关系式的新系数，与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。
Prandtl number reflects the effect of energy and momentum transport in fluid; it has been frequently used in thermodynamic and hoat transfer computation.
反映流体中能量和动量迁移过程相互影响的无因次组合数———普朗特数，在热力计算中具有重要的作用。
And further the effects of Knudsen number, Prandtl number, thermal conductivity, thermal accommodation coefficient and gas pressure on the gas gap conductance are discussed, which provides the quantitatively theoretical solutions to the interfacial gap gas heat transfer in the real contact conditions.
并对影响接触界面间隙热导的克努森数、普朗特数、热导率、适应系数、压力等参数进行了分析，为实际情况下接触界面的传热提供了理论基础。
Using the new? anomalous magnetic Prandtl number? in accretion disks, we study the effect of dissipation on magnetic instability of Keplerian disks.
我们利用吸积盘中新的反常磁普朗特数来研究耗散过程对开普勒盘磁不稳定性的影响。
The main objective of the present work is to study the effect of free surface heat transfer on the thermocapillary flow of high Prandtl number fluids.
本文利用数值方法探讨往复振荡圆柱对渠道内加热块之暂态流场结构及热传特性的影响。
The distributions of Reynolds shear stress, fluctuation heat flux and turbulent Prandtl number were obtained.
得到了Reynolds应力、脉动热通量和Prandtl数的分布。
Turbulent Prandtl number of wakes generated by a free vibrating cylinder were investigated experimentally, and results were compared with those of rigid cylinder wakes.
对自由振动圆柱后尾迹中的湍流普朗特数进行了实验研究，并与刚性柱体尾迹的结果作了比较。
The Prandtl number has a much greater effect on the temperature distribution than the injection or radiation parameters.
Prandtl数对温度分布的影响比射流参数或幅射参数大得多。
Bifurcation and oscillation were studied for the natural convection in a horizontal layer of low Prandtl number fluid using SIMPLE algorithm with a kind of QUICK scheme.
本文用具有QUICK方案的有限差分法对底部加热的低Prandtl数水平流体层自然对流换热进行了数值计算，研究了这种问题中存在的振荡和分歧问题。
Study on the Value of Prandtl Number in Turbulent Buoyant Jet
紊动浮射流中的普朗特数取值研究
This paper carry out experimental study of the heat transfer and flow resistance characteristics of high Prandtl number fluid in 3-D internally crossing - finned tubes with cross-experiment design method.
本文以未使用过的润滑油为工质，用正交试验设计方法，对高Pr数流体在肋叉排列三维内肋管中的传热和流阻特性进行了实验研究。
Bifurcation and oscillation of natural convection in a horizontal layer of low Prandtl number fluid
低Prandtl数水平流体层自然对流的振荡和分歧
Boiling heat transfer of flowing high Prandtl number fluids was studied experimentally in different types oi thermosyphon boiling device with various geometrical dimensions.
在不同几何结构的热虹吸沸腾装置中对高Pr准数液体的流动沸腾传热进行实验研究。
It is obtained a mathematical solution in this paper that the temperature of the plate wall is not a Constant, the vertical velocity around the plate is not zero and the Prandtl number (Pr) is also a veriable.
本文给出了在平板壁温不为常数，绕流壁面的横向速度也不为零和Pr数是变量时的一个数学解。
Based on the value range for Prandtl number suggested by experiments, how different values of Prandtl number affecting the simulated results was studied qualitatively by using a k - ε model under axisymmetric coordinate.
本文在已有实验推荐的取值范围的基础上，采用圆柱轴对称坐标系下的k-ε模型，研究了不同紊动普朗特数取值对数值模拟结果逼近真实值的影响程度。