The complicated behavior and multiple states of indoor air convection are mainly related to the multiple physical processes , such as the thermal buoyancy , the solutal buoyancy and the mechanical ventilation 室内空气对流行为的复杂性与状态的多样性通常是多种物理过程相互作用的结果，如离散热源的热浮升力、离散污染源的浓度浮升力及机械通风等。
The paper acquire the most suitable heat parameter of the three modules dy generators through the nmatching test between dy generator and various heat source , and bring forward the conception of most best matching heat 通过多热源和三种型号发生器匹配实验，得出了三种型号发生器在热利用率最高情况下的热源参数，并由此提出了发生器最佳匹配热源的概念。
In the model , the latent heat , convection and temperature - dependent thermal properties were taken into account . a moving gaussian laser beam was simulated using the ansys parametric design language . comparisons were made between the numerical and experimental results 在考虑了相变潜热、对流和随温度变化的热物性参数下,使用apdl参数化语言实现了高斯热源的施加和热源按一定速率的移动。
Using ncep / ncar daily reanalysis data and scsmex data , an investigation is carried out of the relationship between the position variation of the west pacific subtropical high ( wpsh ) and the apparent heating in june 1998 based on the complete vertical vorticity equation 摘要采用ncep / ncar再分析逐日资料和scsmex等资料，根据全型垂直涡度倾向方程，研究了1998年6月西太平洋副高位置变动与大气热源的关系。
In this thesis , the 2 dimensional ( 2d ) and 3 dimensional ( 3d ) models of the sls of 316 stainless steel powder were constructed . apdl ( ansys parameter design language ) was used to control the density of thermal flow , velocity and path of scanning 本文建立了316不锈钢粉末激光烧结的二维、三维模型;运用apdl语言控制热源的热流密度、移动速度以及扫描轨迹;研究了单层多道和单道多层烧结的温度场和应力场。
Abstract : in this article , we discuss the calculation method of the heat analysis in the multilayer rectangular model system when there is heat source in the upper surface of the system . this method can be used in the heat analysis of the design of integrated circuit , micro - electrical assembly unit , etc 文摘:研究上表面含热源的多层矩形模型半解析的热分析计算方法.该计算方法可以用于集成电路、混合电路和微电子组装件的热设计工作
This may be done by ensuring that both leads are of equal length to equalize thermal conduction through them , by making any airflow ( whether forced or natural convection ) normal to the resistor body , and by taking care that both ends of the resistor are the same distance from any heat source on the pcb 例如，让电阻两端的引脚长度相等以使热阻相等；让冷却气流（自然风冷或强制风冷）均匀地吹到电阻上；或者让电阻两端与pcb上的热源的距离相等。
( 4 ) after the rationality of numerical simulation has been testified , going along a series of numerical simulation and performance research . firstly , the thermal superposition principle , based on adiabatic heat transfer coefficient and superposition kernel function , is put forward for the research of discrete heat sources ’ temperature field and thermal conjunction effects secondly , decreasing thermal spreading resistance is good for improving the heat transfer performance , and several methods are discussed 第一、在热叠加原则理论基础上,利用数值模拟方法研究了固态组件的温度场和多个分散热源在热扩展体上的热耦合效应,而且证明了强迫对流情况下热叠加原理形成的温度场和系统模拟时的温度场计算结果非常吻合;第二、针对固态组件里集中热源的特点,对扩展热阻进行了研究,从理论上探讨了减小扩展热阻改善散热性能的方法。
In this paper , using phoenics software to compute and analyze the variety rule of the convecting transfer heat at the basis of computing and analyzing the temperature and velocity field of one underfloor supply air room with a focus hot source , and concluding that the number of the hot source and the supply air outlet > the intensity of the hot source and the volume of supply air will influence convecting transfer heat , and obtained its correlativity formula 本文针对一下部有集中热源的地板送风空调小室，利用phoenics软件，在计算分析小室内气流的速度场及温度场的基础上，对对流热转移量的变化规律做了计算分析，最后得出对于下送风小室的对流热转移量与热源的个数、送风口个数、热源强度、送风量等因素有关，并且得出了其相关关系式。
Solar energy is a sort of never - failing clean energy sources , and how to more effectively utilize it has increasingly become a hotspot scientists tap with efforts . the characteristic of heat pump consist in that it can transfer heat from low temperature to high temperature , and improve the rates of low temperature heat sources 太阳能是一种取之不尽的清洁能源，如何更有效地利用太阳能，已经成为当今各国竞相开发研究的热点；热泵的特点在于能将热量从低温热源传到高温热源，提高低温热源的利用率；太阳能利用技术与热泵技术的相互结合，发展前景广阔。
