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Experimental Study on Gas-Liquid Two-Phase Flows in an Areation Tank by Using Image Treatment Method

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Abstract

Particle Image Velocimetry (PIV) technique was employed to study experimentally gas-liquid two-phase flow in an aeration tank. In terms of the PIV principles, an algorithm of PIV based on the Fast Fourier Transformation (FFT) was worked out. The PIV program was developed and verified, and then was used to measure three kinds of states in the testing device. The program was also used to calculate and analyze the related parameters. The experimental data indicate that the bubbles in testing device have the longest resident time and stronger turbulent intensity for the gas-liquid two-phase flow in a special case (Case 3), resulting in great increase of the oxygen transferring speed and efficiency, whereby providing the basis for the selection design of aeration tank.

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Authors and Affiliations

  1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China

    Wen Cheng

  2. Environment Research Institute, Xi’an University of Technology, Xi’an, 710048, China

    Wen Cheng, Wen-hong Liu, Bao-wei Hu & Tian Wan

Authors
  1. Wen Cheng
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  2. Wen-hong Liu
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  3. Bao-wei Hu
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  4. Tian Wan
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Corresponding author

Correspondence to Wen Cheng.

Additional information

Project supported by the National Natural Science Foundation of China (Grant No. 50679071), the China Postdoctoral Science Foundation (Grant No. 20070410378).

Biography: CHENG Wen (1968- ), Female, Ph. D., Professor

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Cheng, W., Liu, Wh., Hu, Bw. et al. Experimental Study on Gas-Liquid Two-Phase Flows in an Areation Tank by Using Image Treatment Method. J Hydrodyn 20, 650–655 (2008). https://doi.org/10.1016/S1001-6058(08)60108-0

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  • DOI: https://doi.org/10.1016/S1001-6058(08)60108-0

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