CONVECTIVE HEAT TRANSFER IN THE ENTRANCE REGION OF A VERTICAL TUBE FOR WATER NEAR THE THERMODYNAMIC CRITICAL POINT

JOHN R.HOWELL; SANG HOLEE

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CONVECTIVE HEAT TRANSFER IN THE ENTRANCE REGION OF A VERTICAL TUBE FOR WATER NEAR THE THERMODYNAMIC CRITICAL POINT

机译：热力临界点附近水垂直管入口区的对流传热

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Turbulent convective heat transfer is modeled for developing flow of water near the thermodynamic critical point in a constant wall temperature vertical tube with and without buoyancy force. Wall temperature effects on momentum and heat transfer, velocity profiles, property variation, heat transfer coefficient, and friction factor distribution close to the inlet (z/D<10) are discussed. Flow acceleration near the wall increases near the critical pressure. Local axial fluid temperature decreases are observed, apparently due to local radial velocity carrying cool core fluid towards the tube wall. Comparison among models for turbulent Prandtl number shows less influence on momentum than heat transfer.

机译：对湍流对流传热进行建模，以在具有和不具有浮力的恒定壁温垂直管中在热力学临界点附近产生水流。讨论了壁温对入口附近（z / D <10）的动量和热传递，速度分布，特性变化，热传递系数和摩擦系数分布的影响。壁附近的流动加速度在临界压力附近增加。观察到局部轴向流体温度降低，这显然是由于局部径向速度将冷芯流体带向管壁。湍流普朗特数模型之间的比较显示，对动量的影响小于传热。

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来源
《International Journal of Heat and Mass Transfer》 |1999年第7期|1177-1187|共11页
作者
JOHN R.HOWELL; SANG HOLEE;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类热力工程理论;热学;
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1. Transient convective heat transfer to water near the critical region in a vertical tube [J] . Lee SH International Communications in Heat and Mass Transfer . 2006,第5期

机译：垂直管中关键区域附近的瞬态对流换热
2. Free convective heat transfer from a constant heat flux vertical circular tube with different entrance restrictions length [J] . Hussein A. Mohammed, Yasin K. Salman Energy Conversion & Management . 2007,第7期

机译：具有恒定入口通量长度的恒定热通量垂直圆管的自由对流换热
3. Coupled heat and mass transfer in the entrance region of a circular tube with fully-developed parabolic flow and external convective heating [J] . Jian Shi, Chang Li, Yuwen Zhang, Heat and mass transfer . 2010,第5期

机译：具有充分发展的抛物线流动和外部对流加热的圆管入口区域传热和传质耦合
4. Convective heat transfer near the entrance region of a tube for water near the critical point [C] . Sang H.Lee, John R.Howell National heat transfer conference . 1997

机译：靠近临界点的水在管子入口区域附近的对流传热
5. FORCED CONVECTIVE HEAT TRANSFER AND THERMODYNAMICS IN THE SUPER CRITICAL REGION. [D] . FINN, DONALD. 1964

机译：超临界区域中的强制对流换热和热力学。
6. Experimental investigation on convective heat transfer and pressure drop of cone helically coiled tube heat exchanger using carbon nanotubes/water nanofluids [O] . K. Palanisamy, P.C. Mukesh Kumar 2019

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7. Numerical Analysis on Laminar Forced Convective Heat Transfer in Thermal Entrance Region of Circular Tube with Internal Longitudinal Fins [O] . 金丸邦康, 茂地徹, 山田岹 1994

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8. Local Heat Transfer for Water in Entrance Regions of Tubes with Tapered Flow Areas and Nonuniform Heat Fluxes [R] . Sekas, N. J., Stone, J. R. 1968

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CONVECTIVE HEAT TRANSFER IN THE ENTRANCE REGION OF A VERTICAL TUBE FOR WATER NEAR THE THERMODYNAMIC CRITICAL POINT

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