Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
권호 표지
DOI QR코드

DOI QR Code

TRANSIENT SIMULATION OF SUBCOOLED ONSET OF NUCLEATE BOILING IN A MICRO-CHANNEL

마이크로채널에서 과냉 핵비등 시발점의 비정상 수치해석

  • 이희준 (국민대학교 기계시스템공학부)
  • Received : 2011.03.12
  • Accepted : 2011.05.06
  • Published : 2011.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

A numerical study of subcooled onset of nucleate boiling (ONB) in a micro-channel under pulsed heating using volume of fluids (VOF) model was conducted. The VOF simulation adopting the existing experimental condition is compared to the experimental data. The time to ONB was determined when the void fraction at the microheater surface first appeared. The theoretical superheat for homogeneous nucleation relatively predicts the transient ONB results of convective flow of water well based on local temperature distribution. It was found that once heat load increases at the heater, transient flow boiling starts to occur faster.

Keywords

References

  1. 2006, Chen, T., Klausner, J.F., Garimella, S.V. and Chung, J.N., "Subcooled boiling incipience on a highly smooth microheater," Int. J. Heat Mass Transfer, Vol.49, pp.4399-4406. https://doi.org/10.1016/j.ijheatmasstransfer.2006.05.008
  2. 2008, Li, J., Peterson, G.P. and Cheng, P., "Dynamic characteristics of transient boiling on a square platinum microheater under millisecond pulsed heating," Int. J. Heat Mass Transfer, Vol.51, pp.273-282. https://doi.org/10.1016/j.ijheatmasstransfer.2007.03.045
  3. 2008, Xu, J. and Zhang, W., "Effect of pulse heating parameters on the microscale bubble dynamics at microheater surface," Int. J. Heat Mass Transfer, Vol.51, pp.389-396. https://doi.org/10.1016/j.ijheatmasstransfer.2007.09.007
  4. 2009, Chen, G. and Cheng, P., "Nucleate and film boiling on a microheater under pulse heating in a microchannel," Int. Comm. Heat Mass Transfer, Vol.36, pp.391-396. https://doi.org/10.1016/j.icheatmasstransfer.2009.01.022
  5. 1979, Kotake, S. and Glass, I.I., "Flows with nucleation and condensation," Prog. Aerospace Sci., Vol.19, pp.129-196. https://doi.org/10.1016/0376-0421(79)90003-4
  6. 1994, Collier, J.G. and Thome, J.R., Convective Boiling and Condensation, 3rd Edition, Oxford University Press Inc., New York.
  7. 2005, Lee, D., Lee, P.-S. and Garimella, S. V., "Prediction of the onset of nucleate boiling in microchannel flow," Int. J. Heat Mass Transfer, Vol.48, pp.5134-5149. https://doi.org/10.1016/j.ijheatmasstransfer.2005.07.021
  8. 2002, Ghiaasiaan, S.M. and Chedester, R.C., "Boiling incipience in microchannels," Int. J. Heat Mass Transfer, Vol.45, pp.4599-4606. https://doi.org/10.1016/S0017-9310(02)00167-9