A TRANSIENT LIQUID CRYSTAL IMAGE TECHNIQUE FOR LOCAL HEAT TRANSFER DISTRIBUTIONS NEAR A SHARP 180° TURN OF A TWO-PASS SMOOTH SQUARE CHANNEL

Srinath V. Ekkad; Je-Chin Han

首页> 外文期刊>Journal of Flow Visualization and Image Processing >A TRANSIENT LIQUID CRYSTAL IMAGE TECHNIQUE FOR LOCAL HEAT TRANSFER DISTRIBUTIONS NEAR A SHARP 180° TURN OF A TWO-PASS SMOOTH SQUARE CHANNEL

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A TRANSIENT LIQUID CRYSTAL IMAGE TECHNIQUE FOR LOCAL HEAT TRANSFER DISTRIBUTIONS NEAR A SHARP 180° TURN OF A TWO-PASS SMOOTH SQUARE CHANNEL

机译：两通道平滑正方形通道的180°急转弯附近的局部传热分布的瞬态液晶图像技术

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Local heat transfer distributions are presented near a sharp 180° turn of a two-pass smooth square channel using a transient technique and encapsulated liquid crystal coating. Detailed distribution of the local Nusselt numbers are given for three flow Reynolds numbers of 10,000,25,000, and 50,000. Results show that the Nusselt numbers are much higher in the region immediately downstream of the turn compared with upstream values for all three Reynold numbers. The regional averaged results are compared with published heat transfer data.

机译：使用过渡技术和封装的液晶涂层，在两通平滑方通道的急转180°附近呈现了局部传热分布。对于三个流雷诺数10,000、25,000和50,000，给出了本地Nusselt数的详细分布。结果表明，与所有三个雷诺数的上游值相比，转弯下游区域的努塞尔特数要高得多。将区域平均结果与已发布的传热数据进行比较。

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来源
《Journal of Flow Visualization and Image Processing》 |2017年第4期|123-136|共14页
作者
Srinath V. Ekkad; Je-Chin Han;
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Turbine Heat Transfer Laboratory Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843-3123;

Turbine Heat Transfer Laboratory Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843-3123;

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1. Large eddy simulation of turbulent heat transfer in a rotating two-pass smooth square channel with sharp 180° turns [J] . Akira Murata, Sadanari Mochizuki International Journal of Heat and Mass Transfer . 2004,第4期

机译：旋转180度急转弯的两通平滑方形通道中湍流传热的大涡模拟
2. Effect of rib orientation and channel rotation on turbulent heat transfer in a two-pass square channel with sharp 180°turns investigated by using large eddy simulation [J] . Akira Murata, Sadanari Mochizuki International Journal of Heat and Mass Transfer . 2004,第12a13期

机译：大型涡流模拟研究肋骨取向和通道旋转对180°急转弯两通方通道内湍流传热的影响
3. Effect of rib orientation and channel rotation on turbulent heat transfer in a two-pass square channel with sharp 180° turns investigated by using large eddy simulation [J] . Akira Murata, Sadanari Mochizuki International Journal of Heat and Mass Transfer . 2004,第12a13期

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4. Effect of channel orientation on local heat(mass)transfer distributions in a rotating two-pass square channel with smooth walls [C] . C. W. Park, S. C. Lau AIAA/ASME Joint Thermophysics and Heat Transfer Conference . 1998

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5. Local heat/mass transfer distributions in rotating two-pass square channels [D] . Park, Chan Wook. 1996

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6. Local Ca2+ transients and distribution of BK channels and ryanodine receptors in smooth muscle cells of guinea-pig vas deferens and urinary bladder [O] . Yoshiaki Ohi, Hisao Yamamura, Norihiro Nagano, 2001

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7. Heat/Mass Transfer Distribution in a Rotating Two-Pass Square Channel Part I: Regional Heat Transfer, Smooth Channel [O] . C. W. Park, M. Kandis, S. C. Lau 1998

机译：旋转双通道方形通道的传热传质分布第一部分：区域传热，平滑通道
8. Use of image processing techniques for heat transfer measurements using thermochromic liquid crystals [R] . Crabtree, J. A. 1994

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A TRANSIENT LIQUID CRYSTAL IMAGE TECHNIQUE FOR LOCAL HEAT TRANSFER DISTRIBUTIONS NEAR A SHARP 180° TURN OF A TWO-PASS SMOOTH SQUARE CHANNEL

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