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对流     
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  convection
    Thermodynamic Analysis of Steady State Heat Transfer between Condensation and Forced Convection
    在冷凝与强制对流之间稳态换热的热力学分析
短句来源
    Research on natural convection heat transfer and optimization of radiator of round steel series of slice
    圆形钢串片散热器的自然对流换热研究及优化
短句来源
    NATURAL CONVECTION HEAT AND MASS TRANSFER OF WATER AT SUPER-CRITICAL PRESSURES WITH INTERNAL MASS SOURCES
    内含质量源的超临界压力水的自然对流传热与传质分析
短句来源
    EXPERIMENTAL STUDY OF HIGH RAVLEIGH NUMBER NATURAL CONVECTION HEAT TRANSFER FROM A HORIZONTAL CYLINDER
    高Ra数横圆柱外自然对流换热的实验研究
短句来源
    Real-Time Holographic Observation of Natural Convection Heat Transfer from a Horizontal Tube
    水平圆管外自然对流传热的实时全息观测
短句来源
更多       
  convective
    Thermodynamic Analysis and Application of Convective Heat Transfer
    对流换热过程的热力学分析及其应用
短句来源
    NUMERICAL CALCULATION OF LOCAL CONVECTIVE HEAT TRANSFER COEFFICIENTS OVER AIR-COOLED VANE SURFACES
    气冷叶片表面局部对流换热系数的数值计算
短句来源
    A FORMULA FOR AVERAGE CONVECTIVE COEFFICIENTIN LAMINAR BOUNDARY LAYER OVER A PLATE WITHUNHEATED LEADING EDGE
    介绍一个非前缘加热的平均对流换热系数的计算公式
短句来源
    THERMODYNAMIC ANALYSIS AND OPTIMIZATION OF CONVECTIVE HEAT TRANSFER THROUGH A HORIZONTAL ANNULUS
    环形流道内对流换热过程的热力学分析及优化
短句来源
    ANALOGIC EFFECT OF LOW VACUUM AND MICROGRAVITY ON NATURAL CONVECTIVE TRANSFER OF HEAT IN GASES IN SPACE DEVICES
    低真空、微重力对空间装置中气体自然对流传热的相似影响
短句来源
更多       
  convections
    FREE CONVECTIONS OF HEAT OUTSIDE SLENDER VERTICAL CYLINDERS AND INSIDE VERTICAL TUBES
    细长竖圆柱外及竖圆管内的自然对流传热
短句来源
    NATURAL HEAT CONVECTIONS FROM AN INCLINED CYLINDER AND AN ARRAY OF INCLINED CYLINDERS
    倾斜单管和管排自然对流换热的实验研究
短句来源
    It is difficult to deal with complex geometric regions for numerical simulation of convections.
    复杂几何边界是对流换热计算面临的主要难点之一。
短句来源
  convective flow
    Mixed Convective Flow and Heat Transfer of Water in a Helicoidal Pipe under Supercritical Pressure
    超临界压力下水在螺旋管内的混合对流换热
短句来源

 

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      convection
    Mixed finite element method for the convection-dominated diffusion problems with small parameterε
          
    for Sobolev equations with convection-dominated term
          
    for linear Sobolev equations with convection-dominated term is given.
          
    Thermally developing forced convection and the corresponding thermal stresses in a porous plate channel
          
    We obtained the pattern of mantle convection for East Asia and the West Pacific.
          
    更多          
      convective
    Radiative heat transfer in solids and convective heat transfer between the gas and the solid is especially studied.
          
    Methods and algorithms of numerical simulation for three-dimensional thermal-convective motions of the inhomogeneous high-viscosity incompressible fluid in the direct and inverse time are described.
          
    It is shown that, for univalent cations in the regime of convective diffusion, the coefficient of electrolyte rejection by the membrane correlates with the adsorption potential of cations (counterions) at the pore surface of a selective layer.
          
    The gel-layer accumulates considerable surface and bulk charges and is characterized by the high hydraulic resistance hindering the convective ion transport.
          
    It is shown that the effective mechanism of the saturation of nanocrystalline materials with impurities is their convective transfer by moving macrodislocations-linear defects of the regular packing of nanograins.
          
    更多          
      convections
    Numerical analysis of thermal convections in a three-dimensional cavity: Influence of difference in approximation models on nume
          
    The behavior of the critical temperature gradient is discussed in terms of various parameters of the system for both stationary and overstable convections.
          
    Convections over Indo-China Peninsula and its surrounding areas further increase after the splitting.
          
    UHI induced local air convergence and initiated the thunderstorm convections.
          
    This isotopic constancy is incompatible with multiple, small, independent hydrothermal cells of the East Pacific Rise type, and fits much better with a model of hydrothermal convections driven by "magmatic floor heating".
          
    更多          
      convective flow
    The results of numerical simulations are presented that confirm the conclusion about a possibility of generation of an averaged convective flow of a vibrational type by the high-frequency component of microaccelerations.
          
    It is shown that, when a certain critical mass flow rate of the gas or the suspension is attained, due to the essential inhomogeneity of the velocity of the gas bubbles, the layer becomes unstable and convective flow develops in a Bénard cell.
          
    The method is applied to the measurement of a temperature field in a turbulent convective flow.
          
    A linear theory of stability of a plane-parallel convective flow between infinite isothermal planes heated to different temperature was developed in [1-6].
          
    The analog of the Squire transformation obtained in [4] for infinitely small disturbances of a plane-parallel convective flow is extended to secondary motions of finite amplitude.
          
    更多          


    A horizontal heat generating square conduit with thin shell construction

    一个横的薄壁结构的发热的方槽可以看作是没有间隙的双槽形结构。沿竖的中央对称轴线对剖开并在两半之间留个间隙,可以大大地增加薄壁的散热。在这种情况下,薄壁的内部表面亦成为有效的散热面积。这种结构在大电流母线和电子线路上有一定的实际应用。但是它的散热特性至今尚未见到有系统性的研究报导。为了提供设计依据,本文用实验方法研究了H=46毫米和H=92毫米二种规格的双槽形发热体在不同间隙开度条件下的散热,间隙开度范围自0至∞。实验参数范围;q:250~2450大卡/米~2小时,△t:22~128℃。最后结果以无量纲关系形式表出在图上。对于封闭的方槽,外表面的对流换热要比相应的横园柱的对流换热低得多,并可综合成下列公式:从s=0出发,随着s数值的增加,对流放热强度先是增加的,当s/H=0.33时趋近于最高值;对于大开度,再增加s,对流放热强度反而降馒;当s/H>1.5时,对流放热强度已经降到s=∞时的值。本文还包括纹影技术的研究。摄取了不开间隙开度条件下的纹影照片。从这些照片上可以看出,在内表面的上角部分向上流动的竖壁上的边界层被新生的横壁上的边界层冲散;在散热最有...

    一个横的薄壁结构的发热的方槽可以看作是没有间隙的双槽形结构。沿竖的中央对称轴线对剖开并在两半之间留个间隙,可以大大地增加薄壁的散热。在这种情况下,薄壁的内部表面亦成为有效的散热面积。这种结构在大电流母线和电子线路上有一定的实际应用。但是它的散热特性至今尚未见到有系统性的研究报导。为了提供设计依据,本文用实验方法研究了H=46毫米和H=92毫米二种规格的双槽形发热体在不同间隙开度条件下的散热,间隙开度范围自0至∞。实验参数范围;q:250~2450大卡/米~2小时,△t:22~128℃。最后结果以无量纲关系形式表出在图上。对于封闭的方槽,外表面的对流换热要比相应的横园柱的对流换热低得多,并可综合成下列公式:从s=0出发,随着s数值的增加,对流放热强度先是增加的,当s/H=0.33时趋近于最高值;对于大开度,再增加s,对流放热强度反而降馒;当s/H>1.5时,对流放热强度已经降到s=∞时的值。本文还包括纹影技术的研究。摄取了不开间隙开度条件下的纹影照片。从这些照片上可以看出,在内表面的上角部分向上流动的竖壁上的边界层被新生的横壁上的边界层冲散;在散热最有利间隙开度时,双槽体内部气流具有一种拔风作用。

    Based on an analysis of the nature of heat transfer during nucleate boiling, the convection-evaporation mechanism of heat transfer in nucleate boiling is proposed. General equations for the criterion of nucleate boiling are obtained: N_u= A(G_rP_r)~m[Eξ(P)]~n, N_u=AP_r~(m_1)R_c~(m_2)[Eξ(P)]~(m_3), which prove to be satisfactory when used to correlate experimental results. Based on the theory of non-equlibrium thermodynamics and statistical physics, the formation of vapor bubbles on heeting surface is analysed,...

    Based on an analysis of the nature of heat transfer during nucleate boiling, the convection-evaporation mechanism of heat transfer in nucleate boiling is proposed. General equations for the criterion of nucleate boiling are obtained: N_u= A(G_rP_r)~m[Eξ(P)]~n, N_u=AP_r~(m_1)R_c~(m_2)[Eξ(P)]~(m_3), which prove to be satisfactory when used to correlate experimental results. Based on the theory of non-equlibrium thermodynamics and statistical physics, the formation of vapor bubbles on heeting surface is analysed, and the effects of various factors on the formaton of bubble are discussed.

    本文根据不可逆过程热力学及统计物理学的理论,分析了加热表面上汽泡的产生,讨论了各种因素对汽泡产生的影响。提出了泡状沸腾放热的对流汽化机理,获得了描述泡状沸腾放热的普遍准则方程式 N_u=A(G_rP_r)~m[Eξ(P)]~n; N_u=AP_r~(m_1)R_e~(m_2)[Eξ(P)]~(m_3)。用本文的准则方程式能满意地综合实验结果。

    The correct dimensionless correlation equations for the physioal laws of the free convective heat transfer for fluids outside slender vertical cylinders and inside vertical tubes for whioh the physical law of vertical flat plate does not apply, are formally derived. It turns out that the height of the cylinder is a necessary component of the relevant dimensionless group. Using the correct dimensionless correlation equations, we have correlated all existing experimenal data and corrected the mistakes in former...

    The correct dimensionless correlation equations for the physioal laws of the free convective heat transfer for fluids outside slender vertical cylinders and inside vertical tubes for whioh the physical law of vertical flat plate does not apply, are formally derived. It turns out that the height of the cylinder is a necessary component of the relevant dimensionless group. Using the correct dimensionless correlation equations, we have correlated all existing experimenal data and corrected the mistakes in former correlations. A complete of set dimensionless correlation equations based on the experimental data are propesed (for air): Free convection outside vertical cylinders:

    本文正式导出了不符合竖平壁放热规律的细长竖圆柱外及竖管内流体自然对流规律的正确准则方程式。分析表明圆柱或圆管的高度L是有关准则中的必要组成成分。文章在正确准则方程式的指导下,整理了现有实验数据,改正了前人整理中的错误,提出了一整套以实验数据为依据的准则式(对空气): 竖圆柱外身自然对流: 竖管内自然对流: 这一套准则式可推荐供设计计算之用。

     
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