侧流

The main work and the originality points of this dissertation could be concluded as the following parts:(1) To analyze systematically the mathematical model of LES of air flow in great space, under the case of isothermal and non-isothermal, as well as the combined action of buoyancy and strain. Some basic problems are studied about the LES application into airflow simulation of great space, such as boundary conditions, spatial difference scheme and time advancing scheme, time step etc., which creates the basis for the LES application to indoor airflow simulation.(2) Both the instantaneous and time averaged flow field of great space with multiple jets under isothermal and non-isothermal cases are explored with large eddy simulation method, and also discussed the dynamic characteristics and the law of fluidflow in the great space.(3) Based on the results of LES of the great space and the Fanger thermal comfort indexes, it is brought forward the concept of the series of dynamic thermal comfort evaluating indexes, which could be divided into thermal comfort index with time averaged properties PD, PPD, PMV, thermal comfort index with instantaneous properties IPD, IPPD, IPMV, and time averaged thermal comfort indexes TAPD, TAPPD, TAPMV, and transient situations time averaged thermal comfort indexes TTAPD, TTAPPD, TTAPMV. The differences among them and the calculation methods are discussed, and the four kinds of indexes are calculated with the thermal comfort index PD as an example.(4) Based on the LES results it is discussed the hot air stratification phenomena in air-conditioned buildings in the case with air supply and return registers on the ceiling and the case on the sidewall. The fundamentals of the hot air stratification are studied and the relations of estimating hot air stratification are brought forward.(5) With the advanced apparatus such as hot wire film anemometer IFA300 and laser particle field anemoscope, corresponding model test and site measurements have been done, which are compared with the simulation results and LES is proved a very promising method in air flow simulation indoor.

本文主要工作既创新点体现在以下几个方面：(1)系统分析了等温、非等温和考虑剪切力与浮升力综合作用的高大空间大涡模拟数学模型，并研究了高大空间大涡模拟在室内气流仿真应用中的一些基本问题，如边界条件、空间离散格式和时间推进格式、时间步长选择等问题，为大涡模拟在室内气流计算中的广泛应用打下了基础；(2)首次用大涡模拟方法研究了高雷诺数下高大空间多射流在等温、非等温情况下的瞬时流场和时均流场分布，并探讨了多射流流场的动态特性和流动规律；(3)基于大涡模拟的动态仿真结果和Fanger的热舒适指标，首次系统地提出了动态热舒适评价指标体系的概念：即基于时间平均参数的热舒适指标PD、PPD、PMV；基于瞬时参数的瞬时热指标IPD、IPPD、IPMV；基于时间平均热舒适指标TAPD、TAPPD、TAPMV；以及沿行动迹线的时间平均热舒适指标TTAPD、TTAPPD、TTAPMV，并分析了四类热舒适指标的差异性和计算方法，还以PD值为例对四类指标分别进行了计算；(4)基于数十种工况下空调房间大涡模拟的结果，研究了空调建筑上送上回和侧送侧回两种情况下热分层现象，并探讨了热分层的基本规律，首次提出了避免热分层现象的判断公式；(5)在暖通空调领域，首次使用IFA300热线风速仪、激光粒子速度场仪等先进设备，完成了与大涡模拟相对应的模型试验，并把实测结果与仿真结果进行了对比，说明LES在室内气流仿真方面是一种很有前景的方法。

The effect of switching modes on the entrancement,combustion and billet heating process in furnace were analyzed numerically,and the computational results were compared with production records and onsite measurement,which verified the practicability of this CFD system.

结果表明：采用分段同侧换向控制的HTAC加热炉能获得很好的流场和温度场分布，基本满足高质量的钢坯加热需要，但该炉在生产条件下的温度制度存在不合理之处，在今后设计和操作中应进一步优化和改进；全同侧换向控制的火焰布置方式不利于钢坯的均匀、快速加热；而采用交叉换向控制的火焰布置方式可以改善加热炉内的流场和温度分布，更有利于满足钢坯的加热工艺要求。

The meliorative group of 40 patients was applied with continuous ahernant drainage surgery on meliorative side ventricle and lower cavity of lumbar arachnoid, while the contrast group of 40 patients was applied with traditional drainage surgery on side ventricle combined with lumbar centesis.

方法将80例脑室出血病人随机分成两组，改良组（40例）采用改良式侧脑室和腰椎蛛网膜下腔持续交替引流术，传统组（40例）应用传统侧脑室引流结合腰椎穿刺术。

The tailward flow is most strong near the equator, and stronger in the duskside and dawnside than that in the nightside.

尾向流在赤道面附近最强，在夜侧较晨昏两侧强；尾向流有从晨昏两侧向夜侧运动的趋势；尾向流随距地球距离增加而逐渐增强。

Here the foundation is last, this text introduces to synthesize the total construction that connect into the terrace, studying to use the some key technique that the technique of ATM realizes, take go together with ether net business as an example, explained to connect into the lateral work in customer in terrace principle technique, still introduced to connect into the terrace network side V5 connects the oscular and some kind

在此基础上，本文介绍了综合接入平台的总体结构，试图研究了用ATM技术实现综合接入平台的一些关键技术。如ATM信流合约及服务类别，信流管理和初步的拥塞控制原理。以适配以太网业务为例，说明了接入平台用户侧的工作原理和技术，还介绍了V5接口的一些性质，试图解释接入平台网络侧的工作原理。

Result: Unstable bladder in 9 cases(45%), low compliance bladder in 5 cases (25%), obstruction in the bladder outlet in 11 cases (55%), dyssynergia in detrusor muscle and external urethral sphincter in 7 cases (35%), unstable bladder with obstruction in the bladder outlet in 6 cases, low compliance bladder with obstruction in the bladder outlet in 4 cases , unstable bladder with dyssynergia in detrusor muscle and external urethral sphincter in 2 cases .

采用丹迪尿流测定仪对20例慢性前列腺炎患者进行尿流率、充盈性膀胱侧压、压力―流率测定、尿道侧压及肌电图检查。结果：不稳定性膀胱9例（45%），低顺应性膀胱5例（25%），膀胱出口梗阻11例（55%），逼尿肌尿道括约肌协同失调7例（35%），其中不稳定膀胱合并膀胱出口梗阻6例，低顺应性膀胱合并膀胱出口梗阻4例，不稳定膀胱合并逼尿肌尿道外括约肌协同失调2例。

At the same time, in the inner unsteady flow-field of vaned and vaneless diffuser, as well as gap between impeller and diffuser has been measured by PIV. The measurement plane is at z=10, 15, 20mm in axial direction from impeller shroud.

对叶轮和扩压器在靠盖侧、跨盘盖中间流面、靠盘侧三个流面，即轴向位置分别为Z=10mm，Z=15mm，Z=20mm三个流面上的速度场进行了实验研究。

The effects of jet interaction on forces and moments are described by interaction amplification factor, and the algorithm to calculate the interaction amplification factor is presented, then the motion model and the dynamics model of interceptor are established according to the previous analysis.

根据大量参考文献的结论，分析了侧向喷流射入拦截弹外流的流场特征，以干扰放大因子来描述干扰效应对力和力矩的影响，给出了放大因子的计算方法，进一步建立了喷流侧向力和空气动力作用下的导弹运动学和动力学模型。

The aerators are widely used in flood discharge tunnel s and spillways to prevent the cavitation damage of the structures,and air is sucked by flow from the bottom in normal aerator.

龙抬头明流泄洪洞采用常规的底部掺气设施，容易在反弧末端下游附近侧墙处形成掺气盲区，从而导致该侧墙的空蚀破坏，反弧末端下游侧墙是龙抬头明流泄洪洞掺气减蚀设计的重点和难点。

Research for the Optimization test of outlet of flood discharge tunnel in Narrow Water Course with Large Included Angle;2. The aerators are widely used in flood discharge tunnel s and spillways to prevent the cavitation damage of the structures,and air is sucked by flow from the bottom in normal aerator.

龙抬头明流泄洪洞采用常规的底部掺气设施，容易在反弧末端下游附近侧墙处形成掺气盲区，从而导致该侧墙的空蚀破坏，反弧末端下游侧墙是龙抬头明流泄洪洞掺气减蚀设计的重点和难点。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失