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논문검색

Experimental Study on Swirling Flow with Sudden Expansion by Using 3D Particle Image Velocimetry Technique and Heat Transfer in a Circular Horizontal Tube

초록

영어

The effect of swirling on the flow characteristics of tubes with sudden expansion is experimentally examined by 3D particle image velocimetry(PIV) technique to determine velocity profiles. The swirling flow of water in sudden 1:2 axisymmetric expansion has been previously studied within a horizontal round tube. A tangential slot is used as a swirl generator for swirling flow, whereas a honey comb is used for flow without swirling. Three velocities with swirling flows are compared along the test section at Re=14800, and the streamline in the recirculation zone is described. In addition, heat transfer results are include and compared the Nusselt number with and without swirl flow for reattachment length.

목차

Abstract
 1. Introduction
 2. Experimental Rig
 3. Results and Discussion
  3.1 PIV Measurement
  3.2 Heat Transfer Measurement
 4. Conclusions
 Acknowledgements
 References

저자정보

  • Tae-Hyun Chang Senior Research Fellow of RESEAT, Korean Institute of Science and Technology Information
  • Chang-Hoan Lee Principal Researcher of the Korean Institute of Science and Technology Information

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