About the Thesis WorkThe Fluid Dynamics team within the Energy Transfer &amp; Environment (YRLE) department at Vattenfall Research and Development is a multidisciplinary group that covers all aspects of fluid flow relevant to Vattenfall’s operations — from river hydraulics to offshore wind power and nuclear energy.Subject/Assignment: Heat transfer in multiphase-phase flow involves complex physics. Depending on the industrial process, the phases can be any combination of liquids, gases, and solids at different concentrations. The phases can either be separated, sharing a single interface, or several phases may be dispersed into one-phase resulting in many interfaces. In many industrial processes there is one continuous phase and one or several dispersed phases. This is the case for the spray cooling of steam in the pressurizer in pressurized nuclear reactors (PWR), see figs.Within the AdTherm competence centre (<a href="https://adtherm.se/">AdTherM – Advanced computing for sustainable thermal management in industry</a>) work package 3 is concerned with multiphase flows and particularly steam condensation through spray cooling and subsequent spray-wall interaction and heat transfer. In order to understand the limitations of current state-of-the-art computational models a set of simulations with different flow, turbulence, spray, drop, and thermodynamic models should be performed using OpenFOAM and evaluated using tailored experiments made in the Älvkarleby laboratory. Participation in some experimental work is also possible and encouraged.Goal/Purpose:Understand the current state-of-the-art for computational models multiphase flows including droplets, steam condensation and spray-wall interaction and heat transfer

Vattenfall is a European energy company with approximately 20,000 employees. For more than 100 years we have electrified industries, supplied energy to people's homes and modernised our way of living through innovation and cooperation. We are working for fossil freedom.&nbsp;

Thesis Work – CFD of spray-steam condensation, spray-wall interaction and heat transfer

About the Thesis WorkThe Fluid Dynamics team within the Energy Transfer &amp; Environment (YRLE) department at Vattenfall Research and Development is a multidisciplinary group that covers all aspects of fluid flow relevant to Vattenfall’s operations — from river hydraulics to offshore wind power and nuclear energy.Subject/Assignment:&nbsp;Heat transfer in multiphase-phase flow involves complex physics. Depending on the industrial process, the phases can be any combination of liquids, gases, and solids at different concentrations. The phases can either be separated, sharing a single interface, or several phases may be dispersed into one-phase resulting in many interfaces. In many industrial processes there is one continuous phase and one or several dispersed phases. This is the case for the spray cooling of steam in the pressurizer in pressurized nuclear reactors (PWR), see figs.Within the AdTherm competence centre (<a href="https://adtherm.se/">AdTherM – Advanced computing for sustainable thermal management in industry</a>) work package 3 is concerned with multiphase flows and particularly steam condensation through spray cooling and subsequent spray-wall interaction and heat transfer. In order to understand the limitations of current state-of-the-art computational models a set of simulations with different flow, turbulence, spray, drop, and thermodynamic models should be performed using OpenFOAM and evaluated using tailored experiments made in the Älvkarleby laboratory. Participation in some experimental work is also possible and encouraged.Goal/Purpose:Understand the current state-of-the-art for computational models multiphase flows including droplets, steam condensation and spray-wall interaction and heat transfer

Thesis Work – CFD of spray-steam condensation, spray-wall interaction and heat transfer

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Vattenfall

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