查询词典 convection current

The effects of variable properties on flow and heat transfer were also studied. 1. SIMPLEC algorithm was used to simulate the laminar natural convection flow in horizontal concentric annuli with the assumption of constant properties. Numerical studies range are as follows: Ra〓 number 100～10〓, radius ratio 1. 2～10.Velocity and temperature distribution profile and the heat transfer result were derived. The comparison of heat transfer results under the boundary condition of constant heat flux and constant wall temperature was also made.

对水平同心套管内层流自然对流采用SIMPLEC算法进行了数值模拟，在〓，半径比1.2～10范围内使用定物性假设进行了计算，得到有关温度和速度的分布以及相应的换热结果，并比较了内壁面分别处于定热流和定壁温条件下换热结果的差异，根据换热计算的结果整理并拟合有关的换热关联式。

The convection loss ratio, which is only about several percent of ohmic input power, can be neglected.

对流损失在HT—7托卡马克上很小，很少超过百分之几，从而在能量平衡分析中忽略该项。

The convection of onflow mode with ROE format disperse, diffuse with the center difference divides format disperse, the control equation after dimensional disperse advances a format to seek solution with explicit time of much pace Runge-Kutta.

湍流模式的对流项用ROE格式离散，扩散项用中心差分格式离散，空间离散后的控制方程用多步Runge-Kutta显式时间推进格式求解。

In computation, regard successive medium as gas phase, introduce RSM onflow model, undertake numeric imitate with field of SIMPLE algorithmic convection; Regard disperse as the system solid photograph, use random orbit law to calculate its motion contrail.

筹算中，将气相作为接连着牟介，使用RSM急流原模，并用SIMPLE算法对流场施行数额虚拟；将固相作为参商系统，使用随机路径法筹算其活动路径。

In compressional area, physical modelling has been proved to be a powerful tool for simulating the evolution process of fold-thrust system, and gets great progress in nappe and double thrust structures, thrust belt inversion and basement involvement, compressional orogenesis function and surface process, structure transform zone in compressional area and mantle convection together with collision or subduction of plates etc.

在挤压地区，构造物理模拟已经被证明是一种模拟逆冲褶皱系统演化过程的强有力工具；在推覆体或双冲构造、冲断带的反转与基底卷入、挤压造山作用与表面过程、挤压地区构造转换带及地幔对流与板块碰撞俯冲等方面取得了很大进展。

Applying convection equation describing local precipitation anomaly system and real-time meteorological observatory data, the nonlinear oscillation equation describing Kunming precipitation anomaly system was derived and retrieved.

从描述局地降水距平率系统的对流方程和实际气象观测资料出发，导出并反演了描述昆明局地降水距平率系统的非线性振荡方程。

Finally, the so called critical oscillation frequency can be expressed as a function of oscillation amplitude and Grashof number in all the natural, mixed, and forced convection scenes.

最后，有关临界振动频率的经验公式在强制对流、混合对流以至於自然对流的形式皆不相同，本文皆已分别推导出来，且在三种的对流形式中都有相当平滑的曲线可以获得。

For the co-axial flip chip package, we cover a metal lid in the crystal and add a heat sink with basis of 2500 x2500 x1500 . Analysis shows that the package has the optimal heat transfer at the fin's altitude, thickness and spacing of 500, 100 and 166 , respectively, associated with 5 m/s force convection in the test entrance.

在同轴式覆晶外部设计封装上，在金属盖上加上一基底为2500 x2500 x1500 ，鳍片高度、厚度及间距分别为500、100 及166 的热沈；并於测试入口处加入一 5 m/s 的强制对流时，此时封装体拥有最佳的散热效果。

The major parts of this report just stem from a series of studies on the convection heat transfer between vertical parallel plates.

本报告的主要内容由一系列对於垂直流道内的对流热传研究之结果所构成。

On the basis of the conservation equation of continuous medium and in combination with mechanics of fluid through porous media and the heat transfer theory in porous media, conservation equations in porous media (continuous equation, momentum equation and energy equation ) are derived, When constructing the downhole temperature model, heat transfer in a wellbore is considered as the heat transfer in a vertical tube, the flow in a wellbore considered as sufficiently parallel flow, heat transfer in injection zones considered as heat conduction and convection in porous media, the flow in injection zones considered as flow through porous media, heat transfer in adjacent rocks considered as heat conduction in porous media.

在建立井下温度场模型时，把井筒的传热看作是竖直圆管中传热问题，把井筒的流动看作是充分发展的层流流动；把注入层中的传热看作是多孔介质中导热和对流的传热问题，把注入层中的流动看作是渗流；把围岩中的传热看作是多孔介质中导热问题。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48