查询词典 heat flow

On base of the theory of polymeric melt filling flow in micro injection molding , the mechanism of convectional heat transfer for polymeric melt was discussed,and the effects of convectional heat transfer on the melt filling flow in micro injection molding were investigated with considering the model of convectional heat transfer coefficient.

在熔体流动理论的基础上，通过分析熔体的对流传热机理，并引入对流换热系数模型，对微注塑成型中对流换热系数对熔体充模流动进行了研究。

The flow regime in downcomer can be divided into two kinds: cross flow injection and impingement. Cross flow injection only takes place under low injection flow rate in dowcomer flow. The investigation on flow regime and heat transfer in RPV under PTS is for the first time in China.

在国内本实验是第一个研究下降环腔内的流动与传热，在国际上，象这样同时进行了流动可视化，常温常压下传热和高温高压下传热的实验也不多，特别是针对下降环腔内对流换热系数的研究，在公开文献中还没有相类似的实验。

Based on the study of the flow maldistribution in heat exchanger,the effect of staggered plate header configuration on outlet flow and heat transfer in plate-fin heat exchangers was experimentally studied.

在对板翅式换热器内部物流分配研究的基础上，研究了错排孔板型结构封头对板翅式换热器出口流动与换热的影响。

According to flow patterns screened during common pressure experiment . The key factors that affect flow and heat transfer of the gas -liquid -liquid tempestuously mixed jet is analyzed ,the paper present a way and basic idea to describe the flow and heat transfer of the jet .

研究此时的传热现象主要采用实验研究的方法，文中根据常压实验拍摄到的流型，分析影响此气-液-液相互混合大脉动紊流的传热及流动的关键因素，提出描述此时传热和流动过程的基本概念和方法。

The results show that at sea level, coolant flow rate affects the plug pressure, heat flux and temperature; at design operating condition, coolant flow rate has no effect on pressure and heat flux on the plug wall. With the same coolant flow rate, plug temperature at sea level is higher than that at design operating condition; under the same operating condition, ramp temperature is higher than the plug base temperature.

计算结果表明：地面工况下，冷却剂流量的改变对塞锥和塞锥底部壁面的压强、热流密度和温度的影响较大，高空环境下，冷却剂流量的改变对塞锥和塞锥底部壁面的压强、热流密度的影响较小；在冷却剂流量相同的情况下，塞锥和塞锥底部在地面工况下的壁面温度要远高于在高空环境下的温度；在相同工况和相同冷却剂流量的情况下，塞锥壁面上的温度要远高于塞锥底部壁面上的温度。

Based on the analysis of physics course of heat transfer, the mathematical model of single-phase flow in the rectangular narrow channel is proposed. And the boundary conditions are given to get the unique numerical result. The finite volume method is used to found the discrete scheme of equations. According to the flow of SIMPLER arithmetic, the computing program is developed and the correctness of program is validated.Then the program is used to solve the problem of flow and heat transfer in rectangular narrow channel.The stable two dimension velocity and temperature fields in rectangular narrow channel and plate fuel are obtained.

在明确窄缝流道及燃料板换热物理过程的基础上，建立了描述矩形窄缝内单相流动与换热问题的数学模型，并给出了合理的边值条件；然后利用有限容积法对方程进行离散，根据SIMPLER算法的流程编制了模型求解程序；在验证程序正确性的基础上，对矩形窄缝流动与换热问题进行了求解，得到了矩形窄缝流道和板状燃料元件内部温度场、速度场的二维分布。

In calculation of water flow in a heat water boiler of natural circulation, the influence of the nonuniformity of heat load along the height and width of its heat-absorbing surface should be taken into consideration, with the help of a Z-80 computer, through a great number of analyses and calculations,a simplified method to calculate the circulating water flow along a nonuniform heatabsorbing surface is worked out and presented in this paper.

在进行自然循环热水锅炉的水动力计算时应该考虑沿受热面高度和宽度受热不均匀性的影响。本文利用计算机，通过大最分析计算，提出了沿受热面高度和宽度受热不均匀时简单循环回路水循环计算的简化方法。

Kempers' study , the more layers the mesh screen type had, its resistance against gravity was higher, but its heat resistance and flow resistance were comparatively augmented. As mentioned in the preceding paragraph, it is extremely difficult for a single micro structure based on any of the three types to possess both low flow resistance and strong capillary force. Faced with this fact, the researchers have tried to mix the three micro structures in Table 2 into as many combinations as possible so that a composite micro structure with low flow resistance and great capillary force may be fabricated. After a thorough analysis, the groove combined with sintered metal or mesh screen has been found to be a better alternative. However, the groove combined with sintered metal will raise the flow resistance of the channel, and the aluminum substrate employed in this research cannot be sintered into a micro structure. As a result, the groove combined with mesh screen is finally chosen as the composite structure to enhance its capillary force and at the same time maintain its high permeability. In this way, the heat pipe will not fail due to the working angles.

Kempers 的研究当中提到，当网格结构越多层时，其对抗重力的能力也越强，但相对的其热阻以及流阻也越高，就如同前段所述，我们很难在单一结构当中找出一流阻低且毛细力之微结构；因此本研究便以表2中之三种微结构进行组合，找出一低流阻且毛细力强之复合式结构，经分析发现，沟槽搭配烧结以及沟槽搭配网格为较佳之组合方式，但由于烧结搭沟槽构造将会提高流道之流阻，且本研究使用铝做为基材，并无法使用烧结最为其微结构，故将采用网格搭配沟槽之复合式结构提高结构的毛细力，并维持沟槽结构的高渗透性，解决因角度造成热管失效的问题。

On the basis of this model, combined with potential flow for expressing burden flow, considered with gas-solid heat exchange and main chemical reaction in shaft furnace, Comprehensive two dimensions mathematics model of shaft furnace is set up for analyzing flow, heat and mass transfer in furnace.

并在此基础上，结合反应固相流动的势流模型，综合考虑气固传热和竖炉内的主要化学反应，建立了竖炉二维综合数学模型，对炉内流动、传热及传质过程进行了解析。

Based on the theoretical of ice slurry phase flow and heat transfer, established a heat transfer model of ice slurry flowing in horizontal pipes, at same time analyzed the effects of flow and ice packing fraction on heat transfer of fan and coil

在传统液固两相流的研究成果基础上，建立起二元冰在水平管内换热的数学模型，同时针对二元冰在风机盘管中的输送情况，分析了输送速度、含冰率对于二元冰换热的影响

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。