Heat transfer in intermittentair-water flows-Part I: Horizontal tube Academic Article uri icon


  • This paper presents a study on the heat transfer in intermittent air–water flows in a horizontal tube. The experimental technique is based on infrared thermography of an electrically heated wall of the tube, providing both visualization of the temperature field and measurements of the local wall temperature. Measurements of bubble size and frequency are correlated to the measurements of the local wall temperature fluctuations and heat transfer coefficient. The water and air Froude numbers varied from 0.9 to 2.0 and from …

publication date

  • March 31, 1998