1)Heat-flux ratio热流密度比
1.The results show that the heat-flux ratios,i.研究表明:内外加热热流密度比对环形窄缝通道内的湍流流动换热过程有显著影响,在双面加热情况下,窄缝对流动换热过程强化与否,取决于内外管加热热流密度比及流动状态,即Re大小。
2)critical heat flux ratio临界热流密度比
3)minimum critical heat flux ratio最小临界热流密度比
4)heat flux热流密度
1.The research of detecting the operatiog states of mechanical. system based on heat flux density;基于热流密度监测机械系统状况的研究
2.A numerical method,based on single temperature sensor,constant heat flux assumed and arbitrary number future time steps,was employed to determine the heat flux during rapid cooling on high temperature surface with multiply immersed impinging water jets.基于单点测温、常热流假设,任意未来时间步长的导热反问题算法求解浸没水射流冷却过程的热流密度;采用有限容积法离散方程,附加源项法处理边界条件。
3.The meshing requirement of finite element model being considered,the storing technique and the calculating method of heat flux are expatiated.采用焊接仿真用到的经典高斯热源模型,设计了基于表参数热流密度加载算法。
英文短句/例句
1.ACCURATE MEASUREMENT OF HEATFLUXDENSITY──INTELLIGENT HEAT FLOW METER热流密度的准确测量─—智能热流计
2.Superheat decreases as the channel narrows at low heat flux, but it inverts at high heat flux.在较低热流密度下,窄通道强化传热;
3.Numerical Analysis of the Heat Transfer Character of Cold Plate of Two-phase with High Heat Flux;高热流密度相变均热板传热特性的理论研究
4.Experimental heat transfer research on molten salt receiver tube of high temperature and high flux高温高热流密度熔盐吸热管传热试验研究
5.Study on Critical Heat Flux of Liquid Jet Impingement Boiling on a Heated Flat Surface;受热平板上液体喷流沸腾临界热流密度的研究
6.Determination of Heat Flow Density in Fillet Radius Area of Billet Mold方坯结晶器角部弧形区热流密度测定
7.Numerical Analysis of the Heat Transfer Character in the Evaporator of Loop Thermosyphon with High Heat Flux;高热流密度回路型重力热管蒸发器传热特性的数值分析
8.A Fractal Model for Critical Heat Flux in Pool Boiling;池沸腾中临界热流密度的一个分形模型
9.Simulations on Melting Process of Tbab Chs under Turbulent flow with Constant Heat Flux定热流密度条件下的包络化合物浆管内湍流融化过程模拟
10.The experimental results show that water jet impingement induces higher heat flux, higher critical temperature and narrower transition temperature range.水冷实验数据分析结果表明：射流能提高热流密度和临界温度，缩小过渡区温度区间。
11.Study on the Heat Flux Density Measurement Technology Based on Image Processing for Oxyacetylene Flame;基于图像处理的氧乙炔火焰热流密度检测技术研究
12.The Phase-change cooling and Numerical Simulation of High Heat Flux Electronic Components in a Small External Space小空间高热流密度激光晶体的相变冷却及数值模拟
13.Error Analysis of On-site Detecting Heating Flux for Envelope Structure by Solar Radiation太阳辐射对围护结构热流密度的现场检测误差分析
14.The Experiment Research on the Convective Heat Transfer of High-Density Assembly Microchannel;高密度组装微通道对流换热实验研究
15.Fragmentation rules of coal water slurry spheres in thermal different-density fluidized bed水煤浆球在异密度热态流化床内的破碎规律
16.Progress in phase change fluid in field of high-density latent heat transportation相变流体在高密度潜热输送中的研究进展
17.Area Source Filament Thermion Emission Flow Density And Uniformity Analysis面源灯丝的热电子发射电流密度和均匀性分析
18.Experimental study on the factors affecting the interface between hot and cold fluid in the density lock影响密度锁内热-冷流体分界面因素的实验研究
相关短句/例句
critical heat flux ratio临界热流密度比
3)minimum critical heat flux ratio最小临界热流密度比
4)heat flux热流密度
1.The research of detecting the operatiog states of mechanical. system based on heat flux density;基于热流密度监测机械系统状况的研究
2.A numerical method,based on single temperature sensor,constant heat flux assumed and arbitrary number future time steps,was employed to determine the heat flux during rapid cooling on high temperature surface with multiply immersed impinging water jets.基于单点测温、常热流假设,任意未来时间步长的导热反问题算法求解浸没水射流冷却过程的热流密度;采用有限容积法离散方程,附加源项法处理边界条件。
3.The meshing requirement of finite element model being considered,the storing technique and the calculating method of heat flux are expatiated.采用焊接仿真用到的经典高斯热源模型,设计了基于表参数热流密度加载算法。
5)Heat Flux Density热流密度
1.But,at the special heat flux density and the special magnetic field strength,the heating rate of oil is higher than the heating rate of water,and with the increasing of the magnetic field strength and the time of magnetization,the heating rate of oil and water is both increase.结果表明,磁场作用下,油与水的升温速率变化的规律是一致的,但在相同的磁场强度和热流密度的条件下,油的升温速率比水的升温速率要大;随着磁场强度的加大以及磁化时间的延长,其升温速率都明显增加。
2.When the maximum heat flux density is acquired,the experiment confirms the groove surface size as follows:0.实验确定了获得最大热流密度时的微槽表面尺寸为槽宽、槽深以及槽间距分别为0。
3.Secondly,a dimensionless model for finite-element method was established,and 167 706 numerical computations were carried out to study the dimensionless heat flux density on the outer surface of a freezing pipe with constant temperature,and then the relationships between the dimensionless heat flux density and its influe.应用相似理论将冻结温度场方程和参数无量纲化,然后建立无量纲的数值计算模型,研究了在外表面恒温情况下冻结管壁的无量纲热流密度与各无量纲影响参数间的关系。
6)thermal density热流密度
1.The results show that the ignition temperature of Fe-Ti-C system can be decreased greatly under the action of electric fields and great thermal density.结果表明,在电场和大热流密度作用下,体系的点火温度可以大幅降低,当压力为0～6MPa时,点火温度在310～464℃范围内。
2.The results show that the ignition temperature of Fe-Ti-C system can be decreased greatly under the action of electric field and great thermal density.结果表明:在电场和大热流密度作用下,体系的点火温度可以大幅降低;Fe含量越高,其对体系低温燃烧合成过程的影响越大。
3.The results show that the ignition temperature of Fe-Ti-C system can be decreased greatly under the action of electric field and great thermal density, and the ignition temperature is 390～570 ℃ under different technological conditions.结果表明:在电场和大热流密度的共同作用下,体系的点火温度得到大幅度降低,且随工艺条件的不同在390～570℃范围内变化;200℃保温2min过程对体系的低温燃烧合成过程有较大的影响,即200℃保温压坯的点火温度和实际所达到的最高温度均高于相应的未保温压坯。
延伸阅读
临界热流密度临界热流密度critical heat flux 此时，有更多的汽泡生成。但热流密度增至c点后，如果继续增加热流密度，则由于汽泡密度太大，以致联成汽膜。这种汽膜将加热面与冷却剂隔开，从而使传热能力急剧下降，壁温将由c点急剧上升到。‘点.。点的热流密度(亦即c‘点的热流密度)即定义为临界热流密度。达到临界热流密度时出现的壁温急剧升高，可能造成释热元件表面过热，甚至烧毁。所以临界热流密度有时也被称作烧毁热流密t01卿l伽执j[0仪专屯1 八r.丫、沸腾工况下热流与沮压的关系a以下是液体自然对流工况.a一b是自然对流和泡核沸璐混合的工况;b-。是泡核沸璐工况;c一d是泡核沸璐和膜态沸肠混合的工况.d一e是膜态沸肠工况.e一f是膜态沸腾加辐射的 工况度。由于在此热流密度下开始偏离泡核沸腾而向膜态沸腾过渡，故又叫偏离泡核沸腾热流密度。 临界热流密度与实际(或设计的)热流密度之比称为偏离泡核沸腾比。设计上应保证偏离泡核沸腾比大于1。 影响临界热流密度的主要因素有冷却剂流速、压力和含汽量等。通常液流中含汽量愈大、流速愈低、则临界热流密度愈小。而压力的影响则不是单调的，低压下，临界热流密度随压力的增加而增大;高压下，则随压力的增加而减小。 实验的临界热流密度数据一般概括成经验公式的形式，其中的临界热流密度表示为各种自变t(有时还有一些因变量)的函数。这些公式都只在严格规定的各自变t范围内是最佳的，不推荐外推到这个范围之外。例如下述的W一3公式，临界热流密度qcr表示为 叮。，=3 .154Xlo‘〔(2.022一6.23sxlo一色P) +(0.1722一1.43xlo一吕P)exp(18.177 一5 .987xlo一’P)苏〕〔(0.1484一l.596x.+。·1729苏.二})x些瓮黔+1·。37〕 X(1 .157一0.869浓)〔0.2664 +0.8357exP(一124D。)〕(0.8258 +0.34lX10一8△H.)FW/mZ式中p为冷却剂工作压力，Pa;G为冷却剂质t流密度，kg/(h·m，);从为当t直径，m;不为计算点处的含汽量;△月一H一H.。为冷却剂在进口处的欠热焙差，H.为工作压力下冷却剂的饱和熔，J/kg;Hln为冷却剂在进口处的熔，J/kg，F为格架修正因子。公式的适用范围为:P=(6.59~15·86)x 10‘pa;G，(4·88~24·41)X lo6kg/(h·mZ);De一(5·08~17·78)X10一3m;X.簇o·15;H，。)930·4 X 10，J/kg。I一n]旧rel旧m一du临界热流密度(eritieal heat flux)由泡核沸腾转变为膜态沸腾时的单位表面积、单位时间内所传出的热t。它是反应堆热工水力设计中的一个限制t，即不允许热流密度达到或过分接近临界热流密度，以防发生嫩料元件的过热或烧毁。 图中给出沸腾工况下的热流与温压的关系.由图可见，在a一b段，随粉热流密度的增加，壁温逐渐升高。
