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Volume 35 Issue 2
Feb.  2025
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WANG Yun, WU Junmei. Bubble Dynamics Behavior of Nanofluids to Enhance the Capability of In-Vessel Retention[J]. Nuclear Power Engineering, 2014, 35(2): 47-52.
Citation: WANG Yun, WU Junmei. Bubble Dynamics Behavior of Nanofluids to Enhance the Capability of In-Vessel Retention[J]. Nuclear Power Engineering, 2014, 35(2): 47-52.

Bubble Dynamics Behavior of Nanofluids to Enhance the Capability of In-Vessel Retention

  • Received Date: 2013-02-18
  • Rev Recd Date: 2014-01-26
  • Available Online: 2025-02-15
  • In this study, regression analysis on Al2O3/H2Onanofluid properties was made. The growth and departure of the bubble behavior in the Al2O3/H2Onanofluid and pure water flow boiling process were numerically simulated based on Moving Particle Semi-implicit(MPS) method in different conditions. And the comparative analysis was made between the results of pure water and Al2O3/H2Onanofluid under the same conditions. The results indicate that the bubble in Al2O3/H2Onanofluid grows faster and the bubble departure frequency of nanofluids is greater than that of pure water, and the heat flux is also improved in the same conditions. It is convinced that nanofluids can enhance the boiling heat transfer. This work also initially reveals the underlying mechanism why nanofluids can enhance the boiling heat transfer from the point of view of bubble dynamic behavior. In order to investigate the nanofluids application in In-Vessel Retention(IVR) strategy after severe accident happened to the nuclear reactor, the bubble dynamic behavior has been researched. The results indicate that the bubbles in nanofluids can depart from the heat surface earlier than that of the pure water, and this makes the new cooling fluid fill the heat surface timely and enhance the IVR capability.

     

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