Computational Studies of Air-Mist Spray Cooling in Continuous Casting

Due to the significant reduction in water droplet size caused by strong air-water interaction spray nozzle, air-mist is one of promising technologies for achieving high-rate heat transfer. This study numerically analyzed produced a flat-fan atomizer using three-dimensional computational fluid dynamics simulations, and multivariable linear regression was used develop correlation predict transfer coefficient casting operating conditions such as air-pressure, flow rate, speed, standoff distance. A four-step simulation approach simulate cooling capturing turbulence mixing two fluids formation, transport impingement Validations were made on VOF-DPM model which good agreement with experimental results. 33% increase air pressure increases lumped HTC 3.09 ± 2.07% depending other parameters while an 85% rate reduces 4.61 2.57%. For 6.5% decrease speed results 1.78 1.42% HTC. The from this would provide useful information continuous operations optimization.