Frost growth around a cylinder in a wet air stream

Analysis of early-stage frost formation in natural convection over a horizontal cylinder

“…It indicate more frost formation at q ¼ 0 . This phenomenon can be seen in the experiments of Chen and Oosthuizen (1994) and Khoshnazar and Yaghoubi (2008) (for natural convection), Ismail et al (1997), Raju and Sherif (1993), Lee and Ro (2001), and Mago and Sherif (2003) (for forced convection). Hayashi et al (1977) observed that frost density changes greatly with time, and the crystal growth period and layer growth period are distinguished remarkably.…”

“…Therefore, in the present work, we have selected: d 0 ¼ 0.1 mm, d 0 ¼ 0.1 mm and L ¼ 0.5 mm based on previous experimental observations of Hayashi et al (1977), Tao et al (1993a,b) and Ismail et al (1997). Tao et al (1993a,b) and Ismail et al (1997) assumed that the water vapor is saturated on and within the frost layer. They determined water vapor saturation pressure using the saturation curve for water vapor over ice.…”

“…Also, Tao et al (1993a,b) from experimental studies on the early-stage of frost formation on a flat plate proposed relation for transition time as a function of cold surface temperature in forced convection. Ismail et al (1997) described a two-dimensional model to study frost growth around a cylinder in a wet air stream and evaluated local properties during the frost formation stages. Later on, Cheng and Wu (2003) investigated experimentally the early-stage of frost formation on a cold plate in atmospheric air flow.…”

Analysis of the frost growth on a flat plate by simple models of saturation and supersaturation

“…Previous researchers assumed that the water-vapor at the frost surface is saturated with the surface temperature, and water-vapor transport through a porous medium is mainly due to Fickian diffusion caused by the gradient of the vapor partial pressure [4,11,13,14]. And _ m 00 d can be described by the assumption of the local thermodynamic equilibrium, and the perfect gas law and Clausius-Clapeyron expression.…”

A novel prediction model of frost growth on cold surface based on support vector machine

“…Different correlations have been developed to calculate the frost growth characteristics [2][3][4][5][6]. Based on frost property correlations, the mathematical models are developed by solving the mathematic equations that describe the frost growth [6][7][8][9][10][11][12]. The experimental correlations and mathematical models have been successfully applied in predicting frost growth.…”