对流

In this paper, the dimensionless form of convection-dispersion equation in miscible displacements is deduced.

给出了混相驱对流-弥散方程的无量纲形式；采用高阶精度差分格式对其进行数值求解并应用于几个具体算例中。

This paper studied the free convection condensation heat transfer of miscible binary mixture on a horizontal smooth tube.

研究互溶性双组分混合物在水平光滑管上的自然对流冷凝传热性能。

We studied the natural convection in narrow double-side heating arc by mock-up tests and numerical simulation in this thesis.

本文对双面加热的圆弧形窄缝通道内重水的自然对流进行了模化试验和数值模拟。

Firstly, we establish the 3-D heat transfer model of the swine crura under the effect of indirect monkshood moxibustion, analyze the temperature distribution on the surface of the monkshood during the moxibustion in the experiment, then apply the boundary condition to the model with the air convection considered and calculate the temperature and heat flux distribution of the 3-D model at different times. Beside, we also compare the results of the 3-D model with the experiment and the results of the 2-D model to verify the correctness of the 3-D model.

本文先建立了艾炷隔附子饼灸作用于生物组织的三维传热模型，然后根据实验条件分析了艾炷燃烧过程中附子饼底面的温度分布情况，并在模型上施加了新建立的温度边界条件，同时考虑了生物模型表面的空气对流条件，计算得到了三维生物模型在不同时刻的温度分布图和热流量分布图，而且对三维模型的计算结果、实验以及二维模型的模拟数据进行了比较，验证了三维模型的准确性。

This paper reviews the conventional models for the formation of marginal compositional reversals,including wall-rock contamination,multiple injection,compositional stratification of magma,high degree of supercooling,crystal settling of phenocrysts,flow differentiation,compositional convection and upward decrease in amount of intercumulus liquid.

朱丹，罗泰义，宋谢炎，徐义刚，陶琰，黄智龙，基性-超基性岩浆成岩和成矿过程中Soret效应的研究进展综述了当前对基性-超基性岩床和层状岩体的边缘反转现象的传统解释模型，包括围岩混染、岩浆多期注入、岩浆分层、过冷却、晶体沉降、流动分异、结晶和成分对流以及逐渐减少的颗粒间熔体量。

Heat transfer ; natural convection ; boundary layer

传热；自然对流；边界层

The time-splittingscheme is developed for energy equation in natural convection in this paper.

本文还将时间分裂法推广应用于求解自然对流中的能量方程。

The time-splitting scheme is developed for energy equation in natural convection in this paper.

本文还将时间分裂法推广应用于求解自然对流中的能量方程。

Chapter 4 gives characteristic finite element methods for natural convection problem and Navier-Stokes equation.

第四章给出自然对流问题及Navier-Stokes方程的特征有限元算法。

The results of the high Ra number natural convection simulation in a cavity are satisfactory.

对一方腔内高Ra数自然对流问题的数值模拟表明，结果是令人满意的国家自然科学基金

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。