TY - JOUR
TI - Numerical analysis of mixed convection in pulsating flow for a horizontal channel with a cavity heated from below
AU - Selimefendigil Fatih
JN - Thermal Science
PY - 2016
VL - 20
IS - 1
SP - 35
EP - 44
PT - Article
AB - In this study, a channel with a cavity heated from below is numerically  investigated for the mixed convection case in pulsating flow for a range of  Richardson numbers (Ri=0.1, 1, 10, 100) at Reynolds number of 50 in the  laminar flow regime. At the inlet of the channel, pulsating velocity is  imposed for Strouhal numbers between 0.1 to 1 and velocity amplitude ratio  between 0.3 to 0.9. The effect of the pulsation frequency, amplitude and  Richardson number on the heat transfer enhancement is numerically analyzed.  The results are presented in terms of streamlines, isotherm plots and  averaged Nusselt number plots. FFT plots for the Nusselt number response to  single sinusoidal velocity forcing at the inlet and nonlinearity in the  response is also provided.