Heat transfer in intermittent air-water flows-Part II: Upward inclined tube Academic Article uri icon


  • This paper presents a study on the heat transfer in intermittent air–water flows in an upward inclined 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. Local heat transfer coefficients and flow parameters have been measured for air–water flow in a pipe of 49.2 mm inner diameter at inclination angles of 2° and 5°. The water and air Froude numbers varied from 0.59 to 2.0 …

publication date

  • March 31, 1998