travelling comfort
- travelling comfort的基本解释
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舒适性
- 相似词
- 更多 网络例句 与travelling comfort相关的网络例句 [注:此内容来源于网络,仅供参考]
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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 caculation results of Pubugou high rockfill dam under the action of design earthquake travclling wave show: in few cases, the seismic response under travelling wave input is less than that under routine input; but in many cases, the former surpasses the latter, and the rate of increase of few components has doubled and redoubled; the strengthened areas of seismic response under the action of travclling wave are in the direction which travelling wave has gone; compared with acceleration and displacement, dynamic stress is even more sensitive to travelling wave input; compared with the direction along river, the effects of travelling wave in the direction cross river are even more intense.
结合瀑布沟高土石坝在设计地震行波输入下的研究表明,行波反应少数情况下弱于常规反应,而大多数情况下则有所增强,个别指标甚至有成倍的增加;行波反应强化区均出现在去波向;与加速度和位移相比,动应力反应对行波输入更为敏感;与坝体顺河向行波效应相比,横河向则更加强化。
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The theoretical basis on pressure comfort of foundation garment, the factors influencing pressure comfort, and two methods for evaluating pressure comfort of foundation garment (subjective evaluating, objective evaluating) are described.
介绍了整形内衣压力舒适性研究的理论基础、影响压力舒适性的因素、压力舒适性评价的2种方法:主观评价法和客观评价法,并对动态服装压力分布研究的最新进展做了介绍,同时指出整形内衣压力舒适性研究中存在的问题,并对整形内衣压力舒适性的研究提出了新的设想。
- 更多网络解释 与travelling comfort相关的网络解释 [注:此内容来源于网络,仅供参考]
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travelling bridge crane:移动桥式吊车
travelling box type solar cooker 旅游箱式太阳灶 | travelling bridge crane 移动桥式吊车 | travelling bus 旅行车
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travelling-wave deflection system:行波偏转熔法
travelling-wave antenna 行波天线 | travelling-wave deflection system 行波偏转熔法 | TWMBK travelling-wave klystron 行波速调管
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travelling electric shaver:旅行电动剃须刀
travelling drier 移动式干燥机 | travelling electric shaver 旅行电动剃须刀 | travelling form paver 移动式摊铺机