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The experimental setup for the turbulent jets in crossflow is designed, and the hot wire anemometry IFA 300 is used to measure the velocity field and the turbulent kinetic energy, and the computational result matches experimental measurement reasonably well. The experimental result is very important in the analysis of the flow field, deduction of the equation of the jet trajectory, check of the turbulence model and validation of the numerical method.

首先，建立了用于测量横向紊动射流的实验台，并利用IFA 300型热膜风速仪系统测量了多种工况下的流场，并将速度、湍动能结果与数值计算结果进行了比较，实验结果与数值模拟结果吻合较好，从而为分析流场特性、确定射流轨迹、比较湍流模型以及验证数值计算方法提供了依据。

The axial velocity and stagnation point offset of two opposed jets coming from two asymmetric nozzles oppositely located with large separation distance were studied by using hot-wire anemometry.

采用热线风速仪对大喷嘴间距下两不对称喷嘴形成的对置撞击流的轴线速度分布和驻点偏移规律进行了实验研究。

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。

Main Products has 201; 202; 301; 303; 304; 430; 321; 316; 310S stainless steel, such as bright line; electrolysis line; hydrogen back line; cold Tun silk; bright rods; hexagonal rods; black bar; angle; channel ; flat steel; square steel; profile; wire; decorative tube; seamless pipe and other products (according to user requirements of production standards, models, materials products).

企业主要产品有201；202；301；303；304；430；321；316；310S等不锈钢光亮线；电解线；氢退线；冷墩丝；光亮棒；六角棒；黑棒；角钢；槽钢；扁钢；方钢；异型材；焊丝；装饰管；无缝管等产品(可按用户要求生产各种标准、型号、材质的产品)。

It provides steady lifting with low noise, and is equipped with lifting brackets, anti-fall supporting protection, stopping protection against wire fracture, limiting device for maximum load, control device for maximum lifting height and fixing device for the turning angle of the bracket arm.

升降平稳、噪音低，并设有举升托架、防跌落支承保险、钢索断裂制动保险；最大负荷限定装置和托臂回转角度锁定装置。

This paper presents thecalculation of the hook position, its rotation angle and the deviation angle of wire rope in relation to drumand pulley.

本文给出了用计算机计算吊钩的位置、转角及钢丝绳与卷筒、滑轮间偏角的方法。

It is arranged by the pressed corrugated wire mesh pieces,with inclination angle of 30 or 45 degrees for the corrugated symmetrical line.

金属丝网填料目前已成为最重要的高效精密填表料之一，它是由压成波纹的金属丝网片排列而成。

Nodular anhydrite and enterolithic and chicken-wire structures themselves do not signify the Sabkha environment.

结构状硬石膏、香肠状和网眼状构造本身并不表示萨勃哈环境。

In the annual production, processing electroplating Ring 9,000,000 pcs, steel wire ring 100,000 boxes.

拥有自营进出口权，产品销往东南亚、南美、中东、非洲、俄罗斯等国家和地区。

When you are satisfied that the detector coil is beneath an antinode on the wire, record the position of the detector coil.

将探测线圈向中间移动，使其位于一个波节下(此时从探测线圈得到的电压的振幅为最小)。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。