Endwall heat transfer and fluid flow around an inclined short cylinder

I.K. Choi; T. Kim; S.J. Song; T.J. Lu

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Endwall heat transfer and fluid flow around an inclined short cylinder

机译：端壁传热和流体在倾斜的短圆柱体周围流动

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摘要

Measurements of endwall heat transfer and flow field around a short single cylinder have been performed to examine the influence of cylinder inclination at low Reynolds number (Re_D = 1.0 x 10~4). Both ends of the cylinder are attached to the endwalls and the length-to-diameter ratio of the cylinder varies from 2.7 to 4, depending on the inclination angle. Endwall heat transfer contours (obtained from transient liquid crystals) and endwall flow visualization results consistently indicate that the interaction between the horseshoe vortices around the cylinder and the wakes shed from the cylinder varies with the inclination. Spanwise pressure gradient induced by the inclination causes: (ⅰ) skewing of the upstream main flow as it approaches the cylinder; (ⅱ) formation of a jet-like flow immediately downstream of the cylinder, followed by its impingement onto the endwall; and (ⅲ) skewed separation line along the cylinder span from the cylinder axis.

机译：已经进行了测量单个短圆柱体周围的端壁传热和流场的研究，以检查低雷诺数（Re_D = 1.0 x 10〜4）时圆柱体倾斜的影响。圆柱体的两端都连接到端壁，圆柱体的长径比在2.7到4之间变化，具体取决于倾斜角度。端壁传热轮廓（从瞬态液晶获得）和端壁流动可视化结果一致表明，圆柱体周围的马蹄形涡流与圆柱流所产生的尾流之间的相互作用随倾角而变化。倾斜引起的横向压力梯度会导致：（ⅰ）上游主流接近气缸时产生偏斜；（ⅱ）在圆柱体的下游立即形成喷射流，然后将其撞击到端壁上；（ⅲ）沿汽缸跨度从汽缸轴线倾斜的分离线。

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来源
《International Journal of Heat and Mass Transfer》 |2007年第6期|p.919-930|共12页
作者
I.K. Choi; T. Kim; S.J. Song; T.J. Lu;
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作者单位

School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Republic of Korea;

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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;
关键词
endwall surface heat transfer; horseshoe vortex; inclined single cylinder; spanwise pressure gradient; wakes;

机译：端壁表面传热;马蹄涡;倾斜单圆柱;跨度压力梯度;苏醒;

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机译：倾斜矩形腔中非弹性非牛顿流体浮力驱动流动的流动不稳定性和传热
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7. Discussion: “Force Convection Heat Transfer at an Inclined and Yawed Square Plate—Application to Solar Collectors” (Sparrow, E. M., and Tien, K. K., 1977, ASME J. Heat Transfer, 99, pp. 507–512) and “Local Heat Transfer and Fluid Flow Characteristics for Airflow Oblique or Normal to Square Plate” (Tien, K. K., and Sparrow, E. M., 1979, Internation Journal of Heat and Mass Transfer, 22, pp. 349–359) and “Effect of Finite Width on Heat Transfer and Fluid Flow about an Inclined Rectangular Plate” (Sparrow, E. M., Ramsey, J. W., and Mass, E. A., 1979, ASME J. Heat Transfer, 101, pp. 199–204) [O] . B. Nimmo, S. Zubair 1981

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8. HEAT TRANSFER AND FLUID FLOW WITH APPLICATIONS TO PRESSURIZED WATER REACTORS VOLUME IInChapter 3:Fluid DynamicsnChapter 4:Heat Transfer in FluidsnChapter 5:Two-Phase Heat Transfer and Fluid FlownChapter 6:Heat Transfer by Radiation [R] . P. L. Pfennigwerth, Bill Minkler 1971

机译：应用于加压水反应堆的热传递和流体流量第二章第3章：流体动力学第4章：流体中的传热第5章：两相传热和流体流动第6章：辐射传热

Endwall heat transfer and fluid flow around an inclined short cylinder

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