传热

In order to study the geometry effect on the performance of the louvered fin heat exchanger, a two dimensional numerical model is established for air side heat transfer and fluid flow characteristics for a type of louvered fin surface and the related numerical simulation is conducted.

heat transfer and flow characteristics ； numerical simulation ；为研究百叶窗翅片几何结构对换热器性能的影响，采用二维计算模型，对空气流经一种类型的百叶窗翅片的传热和流动特性进行了数值模拟，获得了百叶窗翅片的温度场、速度场和流线图。

Pressure drop of two-phase flow in lunate channel is related to heat flux, mass flow rate and the gap of narrow channel.

可视化的实验结果为狭缝通道内沸腾传热机理和模型的分析提供了可靠的依据。

The special behavior of bubble and two-phase flow for cryogenic fluid boiling in the lunate channel is obtained by optical method.

可视化的实验结果为狭缝通道内沸腾传热机理和模型的分析提供了可靠的依据。

In this paper lunate channel is adopted to study forced flow boiling heat transfer and its pressure drop in detail.

因此本文采用这种独特的狭缝通道结构形式——弦月形狭缝通道，实验和理论研究了液氮在0.5～1.5mm狭缝通道内受迫流动沸腾时的传热特性和流动特性。

Cryogenic two-phase flow and boiling heat transfer characteristics are studied by means of visualized experiment in lunate narrow channel.

采用可视化实验方法研究液氮在弦月形狭缝通道内两相流流动和传热现象。利用精心设计和制作的试件，借助高速摄影仪和3CCD 数码摄像机，获得了液氮在弦月形狭缝通道热虹吸沸腾时的气泡行为及两相流动的真实信息。

It is found that lunate channel has obvious effect on flow boiling heat transfer enhancement.

当热流密度大于10kW/m〓时，传热效果明显好于热虹吸狭缝沸腾。

In this paper, a unique kind of configuration, lunate channel, is adopted as the flow channel. The gas-liquid two-phase flow and boiling heat transfer characteristics of cryogenic fluid in these narrow channels are studied in detail.

本文采用独特的通道结构形式——极限偏心环缝，在宽广的参数范围内详细研究了这种狭缝通道中低温气液两相流体的流动及沸腾传热特性。

These results have set up the basis in designing and running the thermal siphon pump. Finally, the enhanced heat transfer mechanism of the thermal siphon tubes with lunate channel is analyzed.

最后分析了弦月形狭缝通道热虹吸提升管的高效沸腾传热强化机理，并根据实验结果整理出了无量纲准则关系式。

However, the heat transfer enhancement mechanism, as well as the effect of various parameters, such as configuration size, on the enhancement are not understood clearly yet.In this paper, a unique kind of configuration, lunate channel, is adopted as the flow channel.

本文采用独特的通道结构形式——极限偏心环缝，在宽广的参数范围内详细研究了这种狭缝通道中低温气液两相流体的流动及佛腾传热特性。

Department of Chemical Engineering, Tsinghua University, Beijing 100084, ChinaAbstract: In recent years many activities have been focused on the microchemical engineering process for the miniaturization of chemical engineering.

对近年来微混合设备的加工方法、微混合方式及其在反应、分离及传热方面的应用研究进行了全面综述。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。