查询词典 flow

For example, a regenerative reheating furnace fluid flow and heat transfer is researched, which has simplified the flow and heat transfer of hot air stove according to its real operating conditions.The fluid flow and heat transfer of a hot air stove are numerically simulated by using finite volume method or finite difference method,which bases on the heat transfer equation,flow equation of the gas and heat balance equation.

根据热风炉的实际运行状况对蓄热式热风炉内的流动换热过程进行了合理的简化，并基于热传导方程、气体流动方程和气体的热平衡方程，建立了蓄热体的非稳态传热模型，在对模型利用有限差分法和有限容积法得到离散方程的基础上，采用C 语言编制了模拟计算程序。

By fitting the function reflects the changing trends in the data, access overloading current round of fighting, and in accordance with a real-time measurement of the current round of fighting, from coal forecast instantaneous flow, and flow measuring devices and video detection to the instantaneous flow of coal from joint participation control, at the same time on different Bucket Meidui set rated from coal flow from coal bucket wheel and different operating current limit, to ensure that coal Bucket from the high efficiency and safe operation.

通过拟合的函数关系反映出的数据变化趋势，获取斗轮超载电流，并根据实时测得的斗轮电流，预测瞬时取煤流量，并与视频流量检测装置检测到的瞬时取煤流量共同参与控制，同时为斗轮机对不同煤堆取煤设定额定取煤流量和不同的斗轮工作电流上限，确保斗轮机取煤的高效率和运行安全。

In applying high concentration burning technique to improving burning efficiency for pulverized coal burner, for studying the effect of solid flows of different concentration on burning, Euler mathematical model is set up using gas-solid two phase flow theory. The paper describes the low concentration pulverized coal in horizontal primary air pipe. The relationship between the velocity and concentration of gas phase and that of solid phase, and the effect of gas flow velocity on gas-solid two-phase flows, is arrived through calculating the flow field. Reasonable gas flow velocity is proposed.

在应用高浓度燃烧技术提高煤粉炉的燃烧效率时，为了研究不同浓度固相流动对燃烧的影响，应用气固两相流理论建立Euler数学模型对一次风水平管道中低浓度的煤粉颗粒进行了描述，通过求解流场，得到了管内气相和固相的速度和浓度的分布关系，及其气体流速对气固两相流动的影响，并提出合理气流速度。

Based on the data from heat water experiments for counter flow and cross flow cooling tower in laboratory with different water flow rate, air flow rate and water falling height, the equivalent diameters of water drop under corresponding conditions are obtained.

在逆流式冷却塔中，水的冷却分三部分：喷头、填料、雨区。但是，在进行填料的模拟试验中，要把上述三部分的热力特性分开，是很困难的。

Since 1985, research on simulation and modeling of concurrent flow, counter flow, cross flow, mixed flow grain dryers had been accomplished.

从1985年至今，顺流式、逆流式、横流式以及混流式谷物干燥机的研究已经取得了成功。

Since 1985, research on simulation and modeling of concurrent flow, counter flow, cross flow, mixed flow grain dryers had been accomplished.

我国早在50年代就引进了原苏联的塔式干燥机，80年代以来先后开发了5H X、5H G、5H F、5GSH等系列混流式谷物干燥机。

Based on the data from heat water experiments for counter flow and cross flow cooling tower in laboratory with different water flow rate, air flow rate and water falling height, the equivalent diameters of water drop under corresponding conditions are obtained.

本文首先通过不同淋水高度、淋水密度、过塔风速等的逆流及横流试验塔的热水试验，求出相应条件下的淋水水滴当量直径，再在工业塔的条件下，利用水滴散热公式，计算出雨区散热效果，化为无因次数-冷却数，作出图及计算公式。

Through the analysis of different cross section flow field in cylinder of two-valve and four-valve diesel engine, the following conclusion can be obtained: The formation of intake swirl of two-valve diesel engine mainly is effected by an intense air flow ring zone near the radius from valve axis to cylinder axis, as the flow progresses down through the cylinder, the ring zone air flow expends to both side and finally forms an unified rigid rotating swirl motion.

2号缸盖的螺旋进气道产生的绕自身气门轴线的动量矩比1号缸盖的大，且切向气道的径向速度在前峰面上的数值比1号缸盖的速度数值大很多，因此，两进气道组合后的动量矩损失也大，所以虽然2号缸盖的两个进气道单独的涡流比都高于1号缸盖的两个进气道，但组合后的合成涡流比却是基本相同的。

This paper explored successfully the qualitative and quantitative analysis of flow field in pipeline imposed on ultrasonic flowmeter. With the installation of the flow conditioner, the non-symmetry flow and swirl flow of disturbant factors were effectively reduced.

本论文成功的探讨管流场对超音波流量计定性与定量的影响，流场因为90度弯头、T型管、…等影响流场稳定的因素存在，若不装整流器，所产生流场的不对称性及涡漩，将会持续到43.5D以上。

The theoretical foundation for further research is established. In chapter 6, the flow field of poppet valve and spool valve which are two kinds valve frequently used in hydraulic technique are predicated by finite element method. The flow field structure at different valve opening are illustrated by visualizing images. The effect on the flow noise and energy loss probably caused by vortexes is analyzed quantitatively, the flow channel of the valve is improved.

第六章用有限元方法对液压传动与控制中最常见的两种结构形式的液压阀—液压滑阀和液压锥阀流场进行数值预报，给出不同开口度和不同结构尺寸下流场结构的可视化图像，定性分析涡旋的产生对流体噪声及能量损失可能产生的影响，并对阀的流道结构进行改进。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。