Experimental study on interfacial area transport of a vertical downward bubbly flow

Experiments in Fluids - Tập 35 - Trang 100-111 - 2003
T. Hibiki1,2, H. Goda2, S. Kim2, M. Ishii2, J. Uhle3
1Research Reactor Institute, Kyoto University, Osaka, Japan
2School of Nuclear Engineering, Purdue University, West Lafayette, USA
3Division of System Analysis and Regulatory Effectiveness Office of Research, US Nuclear Regulatory Commission, Washington, USA

Tóm tắt

In relation to the development of the interfacial area transport equation, local flow measurements of vertical downward air–water flows in a pipe with an inner diameter of 50.8 mm were performed at three axial locations of z/D=6.50, 34.0, and 66.5 as well as ten radial locations from r/R=0 to r/R=0.9 using a multi-sensor probe. In the experiment, the superficial liquid velocity and the void fraction ranged from −0.620 m/s to −2.49 m/s and from 0.21% to 8.4%, respectively. The dependence of the interfacial area transport on the liquid velocity, void fraction, and bubble size is discussed in detail.

Tài liệu tham khảo

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