Numerical Investigation For Convective Heat Transfer and Friction Factor Under Pulsatile Flow Conditions

Authors : Erman ASLAN

Pages : 1449-1457

Doi:10.16984/saufenbilder.398331

View : 25 | Download : 19

Publication Date : 2018-10-01

Article Type : Research Paper

Abstract :Under pulsatile flow conditions, the characteristics of convective heat transfer and friction factor for periodic corrugated channel are investigated numerically. The Finite Volume Method insert ignore into journalissuearticles values(FVM); is used in the numerical study. Three different Reynolds Averaged Numerical Simulation insert ignore into journalissuearticles values(RANS); based turbulence models, namely the  k-ω , the Shear Stress Transport insert ignore into journalissuearticles values(SST); and the transition SST model are employed and compared with each other. The results are also compared with the previous measurements performed for non-pulsating conditions. Investigations are performed for air flowing through corrugated channel which has sharp corrugation peak with an inclination angle of 30° and a 5mm minimum channel height. Reynolds number is varied within the range 6294 to 7380, while keeping the Prandtl number constant at 0.70. Four different sinusoidal pulsatile flow conditions, which are combination of two different frequencies and two different amplitudes, are used. Variations of the Nusselt number and friction factor with the Reynolds number are studied. Effects of the amplitude and period of sinusoidal pulsatile flow conditions are discussed. 
Keywords : Corrugated Channel, Convective Heat Transfer, Friction Factor, Finite Volume Method, RANS based Turbulence Models, Pulsatile Flow Conditions