On the use of the active infrared technique to infer heat and gas transfer velocities at the air-water free surface

摘要: [1] A comparison study of the experimental and theoretical transfer velocities heat ands gas at a wavy air-water interface is undertaken using an active infrared technique two tracers. Applying surface renewal model formalism [Danckwerts, 1951], we find that experimentally evaluated velocity roughly factor 2 higher than with low solubility in water when both are referenced to Sc = 600. Potential origins such discrepancy investigated propose use random eddy [Harriott, 1962] explain our results. The extension include approach distance as new parameter. Numerical simulations have been performed timescale from Active Controlled Flux Technique (ACFT) characteristics well gases used experiments (He SF6). simulation results show species, same Schmidt number, different their ratio depends on average value its distribution. implemented present work also predicts changes number exponent hydrodynamics conditions varied.