Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Experimental investigation of jet pump performance used for high flow amplification in nuclear applications

  • Vimal Kotak (Research Reactor Design & Projects Division, Bhabha Atomic Research Centre (BARC)) ;
  • Anil Pathrose (Research Reactor Design & Projects Division, Bhabha Atomic Research Centre (BARC)) ;
  • Samiran Sengupta (Research Reactor Design & Projects Division, Bhabha Atomic Research Centre (BARC)) ;
  • Sugilal Gopalkrishnan (Homi Bhabha National Institute) ;
  • Sujay Bhattacharya (Raja Ramanna Fellow, Department of Atomic Energy)
  • Received : 2023.01.18
  • Accepted : 2023.06.10
  • Published : 2023.10.25
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Abstract

The jet pump can be used in a test device of a nuclear reactor for high flow amplification as it reduces inlet flow requirement and thereby size of the process components. In the present work, a miniature jet pump was designed to meet high flow amplification greater than 3. Subsequently, experiments were carried out using a test setup for design validation and performance evaluation of the jet pump for different parameters. It was observed that a minimum pressure of 0.6 bar (g) was required for the secondary fluid inside the jet pump to ensure cavitation free performance at high amplification. Spacing between the nozzle tip and the mixing chamber entry point had significant effect on the performance of the jet pump. Variation in primary flow, temperature and area ratio also affected the performance. It was observed that at high flow amplification, the analytical solution differed significantly from experimental results due to very large velocities encountered in the miniature size jet pump.

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References

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