In marine power plant, effective heat exchange is important for process efficiency. It significantly influences the economics, and with improved thermal performance the impact on environment can be reduced. In this study, forced convection transient heat transfer for helium gas flowing over a twisted plate was studied by applying Computer Fluid Dynamics (CFD) method. The helical pitch of the twisted plate was 20 mm, 25 mm and 30 mm, respectively. The heat generation rate of the twisted plate was increased with an exponential function. Numerical solution was carried out at various periods ranged from 176 ms to 8.4 s. The flow velocity ranged from 4 m/s to 10 m/s. Simulation results were obtained and compared to experimental results. Effect of helical pitch on heat transfer enhancement was clarified.
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