- 更多网络例句与等温参数相关的网络例句 [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 relations about radiation sensitive parameters with isothermal annealing time and isochronal annealing temperature are given.
对CNMOS晶体管辐照后的等温、等时退火特性进行讨论,给出辐照敏感参数在等温、等时退火过程中随退火时间、退火温度的变化关系。
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We proved that the minimal surfaces were isothermal parameter surfaces and harmonic surfaces. The symmetry and the self-intersection properties of the minimal surfaces were studied.
证明了该曲面既为等温参数曲面又为调和曲面,并研究了该曲面的对称性质与自交性质。
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We use the idea of isothermal parameter representation to prove a convergence theorem, which serves as an important theoretical base of studying the problem of rational Bézier surface.
运用等温参数化思想证明了一个收敛定理,作为用Dirichlet能量函数方法研究有理Bézier极小曲面问题的重要理论基础。
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The exact modedling methods include: representation and construction of control mesh of some special minimal surface; exploration and properties of polynomial parametric minimal surfaces with isothermal parameter.
精确造型方法主要包括两个部分:某些特殊极小曲面的控制网格表示与构造;等温参数多项式极小曲面的挖掘与性质。
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We have proved that there exist only one type of cubic polynomial thermal minimal surface. Some basic properties of it have been discussed and the free-selfintersect region is given. In additional, the quartic minimal surface is discussed.
在本文中我们从等温参数化出发,利用等温参数极小曲面的调和性质讨论了参数多项式极小曲面的存在性和唯一性问题,证明了三次等温参数多项式极小曲面的唯一性,给出了高次参数多项式曲面是极小曲面的一个条件,并在此基础上给出了若干高次参数多项式极小曲面的例子。
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A program based on four kinds of methods in thermal analysis is designed for finding out the mechanism of decomposition reaction of explosives and calculating their kinetic parameters. Compared with the Kissinger's method, the program here adopted has the advantage of exploring the reaction mechanism besieds a calculation of the kinetic parameters. Mechanism of decomposition of the explosive PYX was determined applying this program. The kinetic parameters of PYX calculated by non-isothermal integral meth...
以热分析理论为依据,摒弃了以往仅用一种热分析法进行反应动力学研究和近似假设─—炸药的热分解反应机理f=(1—α)n所带来的弊病,采取4种热分析方法(等温积分法、等温微分法、非等温微分法、非等温积分法)相结合的方法,编制了计算程序,首先判断反应机理,然后求取动力学参数,用所编程序对PYX炸药的反应动力学进行了研究,用非等温法判断了PYX炸药的反应机理,并求得动力学参数,所求参数与Kissinger法求得的结果十分接近。
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The non-isothermal crystallization kinetics of polyoxymethyleneand poly- oxymethylene/co-polyamideat different cooling rates were investigated uisng differential scanning calorimetry.
采用差示扫描量热法研究了聚甲醛和聚甲醛/盐聚酰胺二元共混体系在不同降温速率下的非等温结晶行为,并用 Jeziorny 法、Ozawa 法和莫志深法计算了聚甲醛及其共混物的非等温结晶动力学参数。
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Multiple experiments such as grain-sized separation , magnetic mineral analysis, magnetic parameters measurement were made on 110 surface samples and 64 samples of the 180 core sediment taken from the shelf of the East China Sea to abyssal plain of the Okinawa Trough .
本文选取东海陆架至冲绳海槽槽底平原的代表性沉积样品110个和已有研究基础的DH180岩心样品,通过颗粒分离、磁性矿物分析、趋磁细菌培养、浮游有孔虫δ~(18)O测定、AMS~(14)C测年、多种磁学参数测量(包括磁化率、等温剩磁、x-T热磁曲线、磁滞回线、非磁滞剩磁和饱和等温剩磁等)等试验手段,分析探讨了不同粒级沉积物对磁性的贡献、沉积物磁性与物质来源及环境的内在联系、短期古海洋事件的环境磁学表现等科学问题。
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In this dissertation, the numerical method and optical interferometry experiment for isothermal EHL of finite line contacts are studied. The effects of the profiles and the rolling velocity on the film shape, film thickness as well as pressure distribution of the film are discussed.
本文以滚子类轴承为研究对象,对等温有限长线接触弹性流体动力润滑理论的数值分析方法和光干涉试验进行了研究,探讨了等温油润滑条件下,光滑表面滚子的凸型、凸度量等几何参数和滚动速度与弹流油膜形状、油膜厚度和油膜压力分布之间的关系。
- 更多网络解释与等温参数相关的网络解释 [注:此内容来源于网络,仅供参考]
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isothermal parameter curve:等温参数曲线
isothermal parameter 等温参数 | isothermal parameter curve 等温参数曲线 | isothermal surface 等温曲面
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isothermal parameter:等温参数
isotherm 等温线 | isothermal parameter 等温参数 | isothermal parameter curve 等温参数曲线
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isothermal surface:等温曲面
isothermal parameter curve 等温参数曲线 | isothermal surface 等温曲面 | isothermalasymptotic surface 等温渐近曲面
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isothermal:等温
这里我们只是指出:参数的取值决定等离子体的状态,如等温(isothermal)状态对应 ;不可压缩状态对应;其它的值对应"绝热"状态. 1.2 Hall磁流体(Hall-MHD)模型1.3 电子磁流体(E-MHD)模型而另一方面,我们在主要考虑电子运动时,