Abstract
Abstract In the present study, computational fluid dynamics (CFD) simulations were carried out to investigate the direct contact condensation heat transfer of saturated steam to subcooled liquid spray, where the subcooled liquid was sprayed into the saturated steam through a pressure-swirl nozzle. The characteristics of spray hydromechanics with and without heat transfer were compared and analysed, including spray cone angle, sheet breakup length and sheet thickness. It was found that heat transfer had a great impact on spray cone angle and sheet breakup length but little effect on sheet thickness. And heat transfer coefficient in the sheet region was much higher than that in the droplet region, which indicated that the sheet region played the dominant role in the heat transfer process.
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