传热

Which conducts heat better,copper or wood?

铜和木比较哪一个能更好的传热？

By employing a certain kind of rapid-fire-gun barrel adopting outside liquid cooling method to act as the research object, the fluid-structure coupling heat-transfer model of barrel, cooling fluid and water-jacket was established, and then such a model was calculated with finite element method.

以某采用外液冷方式的速射火炮身管为研究对象，建立了包括身管、冷却液和水套的流固耦合传热模型，使用有限元方法进行研究。

The heat transfer on the wall of engine was simulated with FLUENT.

为实验室环境下台架上的微型发动机设计了射流冲击冷却罩，并用FLUENT软件对发动机缸体壁面的传热进行了模拟。

Heat transfer at the wall of a packed bed: A j-factor analogy established ［C］.

床层传热参数的实验测定［J］。

Proposed is the construction of an innovative vibration-proof baffle rod element along with a simplified model for the unitary flow duct of this construction.

提出了一种新型抗振折流杆元件的结构，并对该结构的单元流道提出了简化模型，用数值方法模拟了夹持式折流杆支撑的单元流道内的流动和传热状况，从流体的流动形态、压力分布和温度分布等方面与直折流圆杆单元流道进行了对比。

In the end, the double measurement of steam-water two-phase flow by combining venturi tube method and heat transfer method was investigated.

本文对应用文丘利管和传热法测量汽液两相流体流量和蒸汽干度进行了研究。

In the meantime, the temperature of the bus under natural cooling condition is computed by numerical calculation. If the temperature does not meet the requirement, the two schemes of forced ventilation are posed and compared. At last, the ventilating fan is selected on the basis of analysis.

针对垂直布置的母线进行了详细分析，建立了垂直布置的母线的传热模型，确定了计算母线壳体温度和导体温度的数值计算方法，并根据所得结果提出了在工程应用中可以采用的垂直布置的母线散通风方案。

The numerical results show the evaporation rate of the metal increases with the power of the electron gun, so the vapor density increases and the vapor temperature decreases and the vapor velocity increases.

这会影响液态金属的流动及传热特性，从而影响金属的蒸发速率以及金属蒸气的密度、速度和温度分

The model is based on the Nusselts solutions by considering the factors of vapor-liquid interfacial shear stress, the super-cold and the density of the vapor which have important influence on the heat transfer performance of the thermosyphon.

模型建立在Nusselt纯净饱和蒸汽层流膜状凝结理论的基础上，考虑了对热虹吸管的传热性能有重要影响的气液界面剪切应力、过冷度和蒸汽密度这几个因素。

The association effect of inert gas and gas phase acetic acid-water in condensing process was considered, the heat and mass transfer behavior of the heat exchangers at every step and the influence of heat and mass transfer on the design of heat exchangers were analyzed for the condensing process of acetic acid, water, and mixed nitrogen vapor in the condenser in the PTA oxidation process.

针对PTA氧化反应中冷凝器内的醋酸、水和氮气混合蒸气冷凝过程，考虑冷凝过程中惰性气体和气相醋酸-水缔合效应，分析了各级换热器内传热传质行为以及传递对换热器设计的影响。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。