查询词典 anemometer

Portable anemoscope was used to get the spray velocity and d was verified with laser phase Doppler particle anemometer.

采用风速计测量了喷雾速度，以及相位多普勒粒子测速仪测量验证了d。

Anemometer starts at the speed of 0.8 m/s. The measuring range is from 1 m/s to 28 m/s with tolerance of 0.4 m/s. On the other hand, anemoscope uses infrared transmitter, receiver and Gray code to yield 4-bit digital signals, resulting in an accuracy of 22.5°.

风速计启动风速值为0.8 m/s，量测范围由1 m/s至28 m/s，误差约在0.4 m/s之内；风向计则采用红外线发射器与接收器以及葛雷码三者之组合，产生4位元16 个方位的数位讯号，其精确度为。

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。

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The pressure field and the velocity field in a cyclone separator were measured with five-hole probe and hot-wire anemometer respectively.

用五孔探针和热线风速仪测定了蜗壳式旋风分离器内的速度场和压力场，分析了上部入口结构、芯管插入深度和锥体长度对流场的影响。

The distribution of gas velocity in the swirl chamber was studied with a hot-wire anemometer, in order to testify the similarity between the flow field in swirl chamber and that in the engine combustion chamber.

为了弄清上止点时副室流场和实际柴油机燃烧室中流场分布的关系，用热线风速仪对副室中的流场进行了研究。

Measurements of the velocity field in a synthetic jet emanating from a special excited speaker are conducted by hot-wire anemometer.

利用热线风速仪，测量了某受激扬声器產生的合成射流的速度大小。

The test airflow distribution was made by using hot-wire anemometer and the establishment of experimental equipment of bag filter, and numerical simulation of CFD was made.

摘 要：采用热线风速仪及建立袋式除尘器实验装置对袋式除尘器内部流场气流分布进行测试，应用CFD对其气流分布进行数值模拟与实验对比。

To validate the measurement results, the symmetric velocity field is measured by a hot-wire anemometer and simulated with a CFD software, and the unsymmetric velocity...

将其结果与声波法监测结果进行对比，三者在一定程度上吻合得较好。实验证明了声波法监测炉内烟气速度场的有效性，显示了良好的应用前景。

The measurements are obtained from a stationary slanted hot-wire anemometer by the technique of phase-locked averaging.

采用周期性采样和锁相平均技术热线测量技术，获得了风轮下游尾迹三维流场的定量信息。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。