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Role of thermal conduction in single-bubble cavitation

Moshaii, A ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1016/j.physleta.2007.09.014
  3. Publisher: Elsevier , 2008
  4. Abstract:
  5. Effect of thermal conduction on radiation from a single cavitating bubble has been studied in a hydrochemical framework including variation of heat conductivity of noble gases up to 2500 K. Results of numerical simulation show that thermal conductivity plays an important role in determining ultimate cavitation temperature. Higher thermal conductivity of lighter noble gases causes to more thermal dissipation during the bubble collapse, leading to a lower peak temperature. Moreover, at the same driving conditions, radius of light emitting region is greater for heavier noble bubbles. Therefore, sonoluminescence radiation is more intensive from heavier noble gases. Phase diagrams of single-bubble sonoluminescence have also been calculated and in comparison with available experimental data, there is a relatively good agreement between the theory and experiment for noble gases. © 2007 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Cavitation ; Heat conduction ; Light emission ; Sonochemistry ; Sonoluminescence ; Thermal conductivity of gases ; Bubble collapse ; Bubble dynamics ; Cavitating bubbles ; Driving conditions ; Lower peak temperatures ; Single-bubble sonoluminescence ; Thermal conduction ; Thermal dissipation ; Inert gases
  8. Source: Physics Letters, Section A: General, Atomic and Solid State Physics ; Volume 372, Issue 8 , 2008 , Pages 1283-1287 ; 03759601 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0375960107013011