对流可分为两类，即自然对流和强制对流。
Convection can be of two types: natural convection and forced convection.
强制对流型烤箱通过热盘传导或强制对流加热食物和饮料。
The forced air convection oven heats food and beverages by conduction with a hot plate or by forced convection.
用修正L M关系式整理了两相强制对流放热系数。
Two phase forced convection heat transfer coefficients are correlated as function of Lockhart Martinelli parameter.
对螺旋管中两相强制对流沸腾传热特性进行了试验研究。
Two phase flow forced convection boiling heat transfer on helical coiled tubes has been systematically studied.
该模型认为环状流区域同时存在强制对流与核态沸腾两种换热方式。
The model assumes that forced convection and nucleate boiling coexist in the annular flow regime.
本文研究了体积力与强制对流共存时椭圆柱外的膜态沸腾换热问题；
The heat transfer of film boiling on an elliptical cylinder when forced convection coexists with volumetric force is investigated.
在强制对流中，液体或气体的运动是产生压力差的某种外营力造成的。
In forced convection the movement of the fluid or gas is caused by an external agent which gives rise to pressure differences.
第四章针对热管型散热器进行了在自然对流和强制对流下散热特性的研究。
In the chapter 4, the mainly aims at the study of thermal characteristic of heat sink with heat pipe under natural and forced convection.
该软件可用于封装，电路板及系统级CFD模拟，包括自然对流、强制对流和辐射传热。
This software can be used for package -, board - or system-level CFD simulation, including natural and forced convection and radiation heat transfer.
对缫丝副产物湿蚕蛹的干燥过程进行了实验研究，采用垂直穿流热风强制对流干燥方式。
The drying process of wet silkworm chrysalises, which are the subproducts of the silk production industry, is experimentally studied.
摘要采用层流和紊流两种模型对水平管外垂下液膜的强制对流蒸发换热性能进行了数值计算。
Numerical analyses and experiments were carried out to obtain the evaporating heat transfer characteristics of falling film on horizontal heated single tube and tube arrays.
应用abaqus软件的强制对流单元，研究了在特定的气体流动条件下的钢卷与气体之间的传热。
By using ABAQUS software, force convection elements were adopted to simulate the heat transfer between the coil and the forced convective hydrogen.
在风的作用下，地表上部空气的强制对流和表土层中的水分蒸发大大增强，对冻土层的热状况产生重要的影响。
Under the action of wind, forced convection of air above ground and water evaporation of top soil layer will be greatly enhanced.
建立了含内热源的液池内自然对流与冷却盘管内强制对流耦合传热的三维物理、数学模型，进行了相应的数值模拟计算。
Three-dimensional physical and mathematical models for the coupled heat transfer of natural convection in a liquid pool with heat source and forced convection in cooling coil tube are established.
本文首先对散热器工作的物理机制进行详细分析分别对自然对流换热情况和强制对流换热情况建立了简化的二维数值计算模型。
At first, the physical mechanism was studied then the 2d compact numerical simulation model for natural convection and forced convection heat transfer analysis was built respectively.
如果是受到机械式的搅拌或者是密度梯度发生了变化而使得管中有大量的分层的气体，那么传递就主要通过强制对流或自然对流而发生。
If there is a bulk mixing of the layers of gas in the tube by mechanical stirring or because of a density gradient, mass transfer occurs primarily by the mechanism of forced or natural convection.
为了研究强制对流对气体保护焊温度场的影响，通过红外热像仪检测了CO2气体保护焊的温度场，发现在熔池及其邻近区域温度呈圆锥型分布。
To reveal the influence of forced convection on gas shielded arc welding temperature field, the infrared camera was used to investigate the temperature field of the base metal in CO2 arc welding.
冰水均温装置中的蒸发器采用立式螺旋管形式放置于冰水池内，螺旋管内为超倍的氨供液，管外用气泵往冰水池内鼓入气泡起到强制对流换热效果。
The evaporators in the ice-water temperature uniformity equipment take the shape of vertical spiral tube which lie in the ice water pool.
强制性对流是利用金属熔体流过凝固界面上方的内部坩埚底部中心的开孔形成的。
The forced convection was produced by the flow of the liquid through the central opening in the bottom of the internal crucible.
对温度均匀性要求较高的电热设备，通常采用强制循环对流的加热方式，因此风机的选型及控制对能否达到要求的温度均匀性至关重要。
Generally forced convection circulation heating device taking gas as heat transmission medium requires high temperature uniformity. So it is very important for selection of fans and control method.
在恒定热流密度条件下，对单相流体分别强制轴向层流流经多孔泡沫金属换热器管内、外的流动和对流传热的均匀性进行了分析。
The distributions of velocity and temperature of fluid inside the tube fitted with the porous metal foam were more uniform than that of the blank tube.
在恒定热流密度条件下，对单相流体分别强制轴向层流流经多孔泡沫金属换热器管内、外的流动和对流传热的均匀性进行了分析。
The distributions of velocity and temperature of fluid inside the tube fitted with the porous metal foam were more uniform than that of the blank tube.
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