Influence of Pulsating Flow on Thermal Characteristics in a Triangular Sharp-Edged Wavy Channel

The numerical study is focused on heat transfer enhancement of a triangular sharp-edged wavy channel using pulsating flow characteristics. The simulation has been performed using ANSYS 16.2 software to investigate the hydrodynamic and thermal characteristics of Newtonian fluids in two-dimensional wavy corrugated wall channels. Two different parameters such as horizontal pitch-to-module length ratio (b/L) and amplitude-to-wavelength ratio (a/λ) were considered, and their influences on heat transfer enhancement have been investigated. The dimensionless frequency of flow pulsation in the form of Strouhal number, St, have been studied at a range (St = 0, 0.25, 0.5, 0.75, 1.0). The study has been carried out for two different Reynolds numbers (Re = 100, 150) and Prandtl numbers (Pr = 4, 6.93). The results show that the role of the flow pulsation on heat transfer enhancement on the target surface is dependent on pulsation flow frequency and b/L ratios.