查询词典 convection heat transfer

In order to investigate the basic heat transfer characteristics of the platelet regeneratively cooled thrust chamber, the second chapter focussed on the developed flow and heat transfer in the long straight regenerative cooling channels with rectangular sections.

为了解层板再生冷却推力室在传热上的基本特征，第二章重点研究流动和热充分发展的矩形截面长、直再生冷却通道内的传热问题，建立了层板再生冷却推力室二维流固耦合传热过程的数理模型，采用通用形式控制方程描述冷却剂紊流传热和通道材料内导热的共轭传热问题，从而避免了流-固区域之间的反复迭代，大大缩短了计算时间。

High dry performance : the mud on the heat transfer surface of slantwise dial can receive smash and stir, thus self-clean itself to maintain high heat transfer factor.

高度干燥性能：由于投入的污泥在倾斜圆盘传热面上得到破碎和搅拌，在传热面上自行进行清洁，以便维持

By analyzing the heat transfer process in trombe wall and of air gap, a CFD model for simulating temperature field in trombe wall is presented and solved by coupling the conductive and radiative heat transfer in solid with RNG k-ε equation.

对特朗勃壁内传热过程和夹层空气动力进行分析，建立了CFD数值模拟模型，耦合流固传热，利用Relieble k-ε两方程模型模拟了特朗勃壁内温度场。

It features a vertical structure with small flooring area to help flow and air discharge of heat transfer oil in the boiler tube and heat transfer oil cannot easily be coked.

立式结构，占地面积小，并有利于导热油在炉管内的流通及排气，导热油不易结焦。

Database of physical and chemical properties for solid wastes were constructed through investigation for single typical component and their mixture of solid wastes. The particulate trajectory model and heat transfer model were developed, based on the studies of Characteristics of solid wastes movement and heat mass transfer in rotary kiln. Pyrolysis experiments of solid wastes in lab and pilot scale rotary kiln pyrolyzers were performed. Mechanism of pyrolysis for typical solid wastes was analyzed. The characteristics of pyrolytic products, such as physical and chemical properties, composition and combustibility, etc, were investigated. A neural network model for the prediction of yields and properties of pyrolysis products was developed. Then, the potential applications of pyrolytic products and the substitution of pyrolytic fuels for corresponding commercial furls were investigated. The optimization of energy recovery and utilization for different wastes through pyrolysis was analyzed.

通过对典型固体废物组分及其混合物特性的分析，建立了固体废物的化学特性分析数据库，并据此进行了物理分类；对固体废物在回转窑内的运动和传热特性进行了研究，建立了固体物料的随机颗粒滚动理论模型和传热模型；在小型和中试回转式热解炉上进行了实验；对各种典型固体废物在回转窑内的热解机理和主要热解产物的性质进行了研究；利用神经网络等方法建立了各典型固体废物的热解产物的产率及特性的数学预测模型；对固体废物热解产物的物性、成分、燃烧特性等开展了研究，分析了其与现有商业燃料匹配的可能性；对热解产物的多种应用性能进行了研究，对不同废物热解中的能源回收和利用进行了优化分析。

The form of intumestant char layer could depart polymer base and burning part while prevent heat transfer. Obviously,the fire –retardant effect of IFR is also that it intermits heat transfer.

因此，其阻燃作用主要属于凝聚相机理；APP、MN等分解时产生的NH3、H2O等不燃性气体，这些气体在能被捕集之前逸出到材料表面的气相，稀释了可燃气体的浓度；膨胀碳层的形成，起到阻止热传递的壁障作用，把聚合物基质与燃烧区隔开。

On the basis of this, intermittent jet impingement heat transfer for nitrogen jetting in air is experimented to investigate its heat transfer enhancement.

在此基础上进一步开展对脉冲式射流冲击换热的研究，以探明间歇冲击下氮气在空气中浸没射流冲击换热的强化效果。

The main heat transfer mechanism of the above-cited heat transfer is based on the micro-liquid film evaporation at the bottom of pressured and deformed gas bubbles.

此外 ，在大型空分装置中，若能使核心部件主冷凝蒸发器的换热温差减少 1K ，则仅一个机组每年就可节省 10 0万美元以上，同时国内外一些学者已将狭缝强化换热技术应用于板翅式换热器，收到了显著效果[1] 。

A new heat transfer printing process for wool fabric-the one-step heat transfer printing process was put forward; the choosing standards of the dyeing assistant agent are introduced; the influence of the type, concentration and aggregation of the special dyeing assistant agents on the performance were tested.

文章提出了一种新的毛织物热转移印花方法－同步法，介绍了助色剂的选择标准及同步法的工艺流程，对同步法工艺专用助色剂的种类、浓度及其聚集体对助色效果的影响进行了研究。

Then average heat transfer coefficient of building external wall and heat transfer coefficient of building block filling wall by calculating were calculated.

通过公式计算将不同基层墙体条件下的外墙平均传热系数转换至外墙主墙体的传热系数。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48