The transient heat transfer processes in Hell are also studied, and the film boiling processes can be well described by the second sound effect in Hell. 对超流氦中的非稳态传热研究表明,热脉冲作用下的膜沸腾形成过程可由超流氨中的第二声(热波)进行很好的描述。
Innovatively, it was quantitatively analyzed and determined that the film boiling working temperature of water-based cutting fluid locates in the ranges of 130 ℃~ 170 ℃. The critical heat flux for vaporization of water-based fluid is less than that of water. 首次定量分析和确定出水基切削液发生膜态沸腾的工作温度范围在130℃~170℃,其极限热流密度低于水的临界热流密度。
Study of Film Boiling Dispersed Two Phase in Narrow Annular Gap 环形狭缝膜态沸腾弥散两相流动特性研究
Detection of CHF and start point of minimum film boiling with wavelet for boundary detection of signal singularity 信号奇异性的边缘检测小波对CHF和最小膜态沸腾起始点的检测
The thermoacoustic oscillation during film boiling heat transfer in superfluid helium is studied. 以超流氦为对象,对其沸腾传热过程中的热声振荡现象进行了研究。
Study on film boiling heat transfer of water jet impinging on hot plate 高温平板上喷流冷却膜沸腾区域的换热特性研究
Analysis of film boiling heat transfer mechanism for solid particulate adulterate into cooling fluid 引入固体颗粒强化膜态沸腾换热的机理分析
Meanwhile, using the supposed new concept, we have proposed some new explanations on the mechanism of flow film boiling. 文中还引用新概念对核沸腾的传热机制作了某些新的解释。
The heat transfer of film boiling on an elliptical cylinder when forced convection coexists with volumetric force is investigated. 本文研究了体积力与强制对流共存时椭圆柱外的膜态沸腾换热问题;
Experimental research of spray falling film boiling on porous surface tubes 表面多孔管降膜沸腾传热研究
Effect of Variable Thermophysical Properties on Film Boiling of Liquid 液体膜态沸腾自然对流变物性影响
Film boiling in a forced-convective flow along a horizontal flat plate 沿水平表面受迫对流时的层流膜沸腾
In evaporating system design of large subcritical pressure natural circulation boiler sometime expensive rifled tube will be used unavoidably in part, so that the film boiling Can be avoided. 在大容量、亚临界自然循环锅炉蒸发系统设计中,有时不可避免地需要部份地采用价格昂贵的内螺纹管,以避免出现膜态沸腾。
On the basis of heat transfer theory, this paper analyzes heat transfer process in film boiling stage when axial workpiece is quenched vertically and distribution of steam film thickness as well as corresponding variation of heat-transfer coefficient. 以传热学理论为基础,对轴类工件竖直淬火时膜沸腾阶段的传热情况进行分析,分析了工件表面蒸汽膜厚度的分布情况和传热系数的相应变化。
A big vapor bubble comparing to the heater size is found to expand and crush on the heater surface accompanied with a loud noise and serve mechanical vibration during noisy film boiling; 在噪声沸腾中,一个与平板加热器大小相当的气泡在其表面上反复地长大、缩小,并伴随着巨大的噪声和剧烈的机械振动;
Contribution of film boiling to axial hardness of hardened workpiece 膜沸腾阶段对竖直淬火件轴向硬度的影响
Analysis of pressure oscillation during noisy film boiling in he ⅱ: influence of geometry size factor of the heater 超流氦噪声沸腾过程中的压力振动分析:小试样几何尺寸对噪声沸腾状态的影响
Minimum film boiling heat flux has no monotnous relation with the thickness of the plate; 最小膜态沸腾热流密度与厚度呈离散关系。
Heat transfer limit and non-equilibrium of subcooled turbulent flow film boiling with high velocity 过冷液体高速流动时湍流膜沸腾的传热极限及热力学非平衡性
The present paper describes a study of spray falling film boiling on horizontal mechanically made porous surface tubes ( JK-1 tubes). 本文报道了机械加工表面多孔管(JK-1管)水平管外降膜沸腾的传热性能及其分析。
The mechanisms for JK-1 tubes and JK-2 tubes to enhance spray falling film boiling has been analyzed and the simple correlations based on the experimental data was estab-lished. 对JK-1管和JK-2管的降膜沸腾强化传热机理作了定性分析,并根据实验数据建立了简单的经验关联式。
A Model of Film Boiling Thermal Hydraulics on a Hot Particle Dropping in Coolant Liquid 膜态沸腾下高温颗粒热动力特性理论分析
Influence of Bath Temperature on Pressure Oscillation in He ⅱ Bath during Noisy Film Boiling 氦浴温度对超流氦噪声沸腾压力振动的影响
A mathematical model of air-water spraying cooling heat transfer in film boiling region is set up. 在前人对单个液滴碰撞传热解析研究的基础上,通过实验与理论分析,建立了气-水喷雾冷却在膜态沸腾区的传热数学模型。
The physical and mathematical models are proposed for the falling film boiling heat transfer, in which the effects of convective flow and nucleate boiling on film heat transfer coefficients are taken into account and the inhibition of liquid flow to the nucleate boiling in the film is considered. 本文提出了降膜沸腾传热的物理模型和数学模型,全面考虑了对流流动与核式沸腾对膜传热系数的影响,以及液体流动对液膜内核式沸腾的抑制作用。
A stable vapor film is observed on the heater surface without noise and vibration during silent film boiling; 在无噪声沸腾中,在平板加热器表面形成一个极稳定的气膜,并且,没有噪声和机械振动出现;
On the turbulent film boiling for subcooled liquid flow along a horizontal flat plate 关于过冷液体沿水平表面受迫流动时的湍流膜沸腾传热
The shape of boiling curves are changed from "M" to"Λ" while the film boiling disappeared if the diameter of sphere is small enough and the subcooled degree is large enough. 当小直径足够小,过冷度足够大时,稳定膜态沸腾段消失了,m形的沸腾曲线变为∧形。
Analysing and Computing Laminar Flow Film Boiling on the Plane Surface at Steady Heat Source 恒热源下平表面层流膜态沸腾的分析和计算
With random theory applied establish the cooling model of impingement cooling: fully nucleate boiling model and stable film boiling model. 应用随机理论,建立冷却系统的冷却模型:完全核态沸腾模型和稳定膜态沸腾模型,并分析影响冷却效果的关键因素。