Heat transfer and fluid flow characteristics of two-phase impinging jets

Kyosung Choo; Sung Jin Kim

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Heat transfer and fluid flow characteristics of two-phase impinging jets

机译：两相撞击射流的传热和流体流动特性

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Heat transfer and fluid flow characteristics of two-phase impinging jets were experimentally investigated under a fixed pumping power condition. The effects of dimensionless pumping power (P-(pump) = 1.4 × 10~(11)-2.8 × 10~(12)) and the volumetric fraction (β-0.0-1.0) on the Nusselt number were considered. Air and water were used as the test fluids. The results showed that the Nusselt number increased with volumetric fraction, attained a maximum value at around 0.2-0.3 of the volumetric fraction, and then decreased. By observing flow patterns, the optimum value of the Nusselt number was found to be in the bubbly flow region. Based on the experimental results, correlations for the normalized stagnation and average Nusselt numbers of impinging jets were developed as a function of the volumetric fraction alone.

机译：在固定泵浦功率条件下，对两相撞击射流的传热和流体流动特性进行了实验研究。考虑了无因次泵浦功率（P-（泵）= 1.4×10〜（11）-2.8×10〜（12））和体积分数（β-0.0-1.0）对Nusselt数的影响。空气和水用作测试流体。结果表明，Nusselt数随体积分数增加，在体积分数的0.2-0.3左右达到最大值，然后下降。通过观察流动模式，发现努塞尔数的最佳值在气泡流动区域中。根据实验结果，归一化的停滞和撞击喷嘴的平均Nusselt数之间的相关性被开发为单独的体积分数的函数。

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来源
《International Journal of Heat and Mass Transfer》 |2010年第26期|p.5692-5699|共8页
作者
Kyosung Choo; Sung Jin Kim;
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作者单位

School of Mechanical, Aerospace & Systems Engineering, Korea Advanced institute of Science and Technology, Daejeon 305-701, South Korea;

School of Mechanical, Aerospace & Systems Engineering, Korea Advanced institute of Science and Technology, Daejeon 305-701, South 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
关键词
two-phase; impingement; heat transfer;

机译：两相撞击传播热量;

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Heat transfer and fluid flow characteristics of two-phase impinging jets

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