Turbulence enhancement by ultrasonically induced gaseous cavitation in the CO2 saturated water

Seung Youp Lee, Young Don Choi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Recent primary concern for the design of high performance heat exchanger and highly integrated electronic equipments is to develop an active and creative technologies which enhance the heat transfer without obstructing the coolant flows. In this study, we found through the LDV measurement that the gaseous cavitation induced by ultrasonic vibration applied to the CO2 saturated water in the square cross-sectioned straight duct flow enhances the turbulence much more than the case of non-ultrasonic or normal ultrasonic conditions without gaseous cavitation does. We also found that gaseous cavitation can enhance effectively the turbulent heat transfer between the heating surfaces and coolants by destructing the viscous sublayer.

Original languageEnglish
Pages (from-to)246-254
Number of pages9
JournalKSME International Journal
Volume16
Issue number2
DOIs
Publication statusPublished - 2002 Feb

Keywords

  • Gaseous Cavitation
  • LDV
  • Square Cross-sectioned Duct
  • Ultrasonic Vibration
  • Viscous Sublayer

ASJC Scopus subject areas

  • Mechanical Engineering

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