Abstract
An experimental apparatus were developed to investigate local heat transfer on a rotating hollow cylinder during laminar jet cooling. The experiments were performed for an extensive range of cooling conditions such as water flow rate and liquid subcooling. Tested material of the cylinder was stainless steel (SUS304) and its dimensions were 136 mm in outer diameter, 150 mm in height and 10 mm in thickness. Using a similarity law for transient heat conduction in thick stainless steel and thin hot strip walls, we specified a rotational speed of the cylinder as 30 rpm. Growth of wetted area around the stagnant point was observed for initial temperature 800℃ and local surface temperature and surface heat flux changes were measured.
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