查询词典 heat flow

A fourth-order compact finite difference alternating-direction-implicit algorithm is proposed for solving the unsteady-state Navier-Stokes equations of fluid flow and heat transfer using the streamfunction-vorticity formulation. Point-successive overtaxation iteration is used to achieve the steady solutions.

本文构造了求解二维非定常涡量流函数形式Navier-Stokes方程组的一种四阶紧致交错方向隐式差分算法，对包括能量方程在内的离散化方程组采用逐次超松驰迭代法求得稳定解，求解了二维非定常粘性不可压缩流体的流动与传热问题。

The parabolic partial differential equation is an important type of mathematical physical equations. It can describe the problems of heat conduction, seepage flow and diffusion, et al.

抛物型偏微分方程是描述热传导、渗流、扩散等过程的一类重要的数学物理方程。

On basis of experimental investigation, this article analyzed flow and heat transfer characteristics between parallel plates packed with small particles.

在试验研究的基础上，分析了平行平板间填充小颗粒填料后的流动和传热特性，表明利用小颗粒填充强化板间对流换热，可以获得显著的传热强化效果，同时流动阻力的增加远小于微颗粒时，通过优化选择能够得到较好的强化收益。

With aim to develop this advanced gasification process, a great deal of experiments have been made on the technique of solids transfer between parallel fluidized beds, which is commonly regarded as the key problem concerning the success of the whole system, and detail theoretic investigation into the gas-solid 2-phase flow characteristics and heat transfer in fluidized-bed reactors are also made.

本文研究的目的在于研制和发展并列流化床煤气化这一先进的工艺过程，对流化床间颗粒循环这一关键技术进行了大量的实验研究，并对流化床反应器中气固两相流动特性和主要传热过程进行了理论探讨。

Depending on the direction of current flow, Peltier devices can both heat and cool.

根据电流方向，Peltier设备可以实现加热和制冷。

Effects of Reynolds numbers, pulsating amplitude and frequency on heat transfer enhancement and flow friction were studied.

计算考察了不同Re数、脉动频率以及振幅对通道内强化传热和压力损失的影响。

Through many years' development and construction, the infrastructure of QFTZ has already reached the domestic first-class level, such as power supply, telecommunication, water purveyance, water draining, sewage draining, heat supply and vapor supply; the complete infrastructure and commercial environment has formed; QFTZ is the first which has passed both ISO9001 and ISO14001. Being the first "Non-charge Zone","Garden-like Invest Model Zone" and the pilot area of "the Integration of the Port and the Zone", QFTZ has become the forerunner of opening up to the outside world, the experimental area of system innovation, the demonstration area of scientific and technical innovation, the radiation driving area of flow economy of Shandong.

经过多年的开发建设，青岛保税区基础开发已基本完成，区域功能培育取得明显突破，供电、通讯、供排水、供热、供汽等基础硬件设施均已达到国内一流水平，形成了完备的基础设施和商务环境，率先通过ISO9001质量管理体系和ISO14001环境管理体系双认证，建成了山东省第一个投资"无费区"和花园式投资示范区，"区港联动"试点区域之一，成为山东省对外开放的先行区、体制创新的实验区、科技创新的示范区、流量经济的辐射带动区。

A common heating oxidation device(fig.1)is to place a silicon plate in a quartz crystal glass reaction chamber. In the reaction chamber, a electric resistant wire heating device heat up the chamber to a certain temperature(usually, the temperature is 900～1200℃. In a special condition, it can be descended to under 600℃). When oxygen or water vapour pass through the chamber(typical gas flow speed is 1cm/s). A chemical reaction is generated on surface of the silicon plate.

常用的热氧化装置（图1）将硅片置于用石英玻璃制成的反应管中，反应管用电阻丝加热炉加热一定温度(常用的温度为900～1200℃，在特殊条件下可降到600℃以下)，氧气或水汽通过反应管（典型的气流速度为1厘米/秒）时，在硅片表面发生化学反应

The convective heat transfer of upper surface of PGA is enhanced due to flow separation and reattachment caused by mounting obstacle.

由于安装台阶引起气流在PGA封装上表面的分离和再附着，导致对流换热的强化。

The heat transfer and pressure drop of the entire flow channel of primary surface recuperator were studied using 3-D numerical simulation .

对波纹状微型燃机一次表面回热器全程通道的换热特性和压力损失进行了三维数值模拟分析，并与采用经验公式的计算结果进行了比较。

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。