Authors : Hoda Asadinia, Samaneh Bovard and Goharshad Hosseini
Abstract: In this investigation, nucleate boiling heat transfer coefficients and dynamic contact angle were experimentally measured during pool boiling of water on a horizontal heating rod in heat flux range between 1-120 kW m–2 under atmospheric pressure. Experiments were performed at several degrees of surface roughness ranging between 3 and 43 μm average vertical deviation. The results showed that dynamic contact angle is increased with increased heat flux and surface roughness. A new model is proposed to predict Stanton dimensionless number by employing dimensional analysis. This model has <2% absolute error.
Hoda Asadinia, Samaneh Bovard and Goharshad Hosseini, 2016. The Effect of the Dynamic Contact Angle on Pool Boiling Heat Transfer Coefficient in Pure Liquid in Contact with Roughens Aluminum Heater. Journal of Engineering and Applied Sciences, 11: 837-842.