查询词典 convection heat transfer

The heat transfer problem in a belieal tube wall is solved using the pertubationmethod. The zeroth-,the first-and the second-order analytic solutions are obtained of temperaturedistribution inside the wall and the heat resistance is calculated.

采用正则摄动法求解了螺旋管壁热传导问题，获得了管壁温度分布的零阶、一阶和二阶的分析解表达式，计算了热阻。

The distributions of dimensionless temperature and net wall heat flux are calculated and compared to the results in references. By comparison, it is shown that the upwinding finite element methods developed have good accuracy in solution of radiative heat transfer in semitransparent media.

采用2个算例对提出的方法进行验证，与文献中得到的无量纲温度及净辐射热流分布较，结果表明提出的迎风有限元方法对于求解多维半透明介比质内的辐射传递有着很好的精度。

The real shape of U tube was considered, and heat transfer model of underground vertical buried tube heat exchanger was built with math methods and numerical analysis software. The soil temperature distributions around the buried tube under different working conditions were solved by programming.

考虑U型管的实际形状，借助数学方法和数值分析软件，建立了地下垂直埋管换热器传热模型，并通过编程求解数学模型，得到了系统短期运行不同工况下埋管周围土壤的温度场分布情况。

It is necessary to transfer heat away from the hot surface via fans or heat spreaders.

有必要用风扇或散热器使热量从发热的表面散出去。

Introduced a new type of helix screw thread pipe heat exchanger, all stainless steel and advanced heat transfer technology in the application of raw material medicine has greatly improved the recovery of solvents to enhance production efficiency, effectively enhanced the competitiveness of enterprises .

介绍一种新型的螺旋螺纹管换热器，全不锈钢材质及先进的换热技术在原料药行业的应用，大大的提高了溶媒回收率，提高了生产效率，有效地增强了企业的竞争力。

Described in the paper are heat transfer mechanisms of heat tube, working principles of the heater as well as its structural characteristics.

介绍了热管传热原理及分离式热管加热炉的工作原理、结构特点。

The performances of the elliptic tube heat exchanger with vortex generator increased average 16% heat transfer rate, and decreased 20%~ 40% pressure drop, which indicated 16.8% area reduction.

装置涡漩产生器之椭圆形热交换器的热传性能较未装置涡漩产生器的圆管热交换器平均高16%，但压降却反而较低20%~ 40%，而面积缩减率为16.8%。

The experiment table on heat transfer of finned tube is established to test the validity of numerical simulation. The heat and temperature distribution of tube and the air around tube are measured.

为了证明以上模拟结果的准确性，建立了翅片管换热实验台，通过实验测出翅片管及其周围空气的温度分布和散热量，与数值模拟结果进行比较，从而验证了数值计算的准确性。

The main heat resistance of heat transfer process in condenser lies in steam side.

凝汽器传热过程的主要热阻产生在汽侧。

The heat transfer and flow resistance performance of corrugated tube heat exchanger were examined by oil, water, and steam.

采用油、水、水蒸气对波纹管换热器的传热和流动阻力性能进行了试验研究。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？