An experimental assessment on the effects of forced, free and mixed convection regimes on the water evaporation rate in surface gravity Waves

In this investigation experimental measurements have been done over a wide range of wave parameters, water temperatures and air velocities for . The measurements were performed over a wide range of on a large heated wave flume equipped with a wind tunnel. The effects of forced, free and mixed convection regimes on the water evaporation rate in surface gravity Waves have been investigated. The experimental results shows that wave motion on the water surface increase the rate of evaporation for all air flow regimes. Also Results reveal the evaporation rate increases with air velocity but increasing of , , has different effects on evaporation rate. For free convection regime evaporation rate increases with, , . For forced and mixed convection regime at medium values of , the leeward air flow structures which form barrier for the vertical transport of vapor, decrease water evaporation rate. Results reveal that the effect of induced turbulence at the wavy interfacial surfaces on the water evaporation increment is more than the effect of interfacial area increment percentage.