Direct Numerical Simulation of Turbulent Flow and Heat Transfer in a Square Duct Rotating along Its Spanwise Direction

摘要: Turbulent flow and heat transfer in a square duct rotating along its spanwise direction is investigated by direct numerical simulation.The spatial terms the governing equations are discretized second-order central difference scheme time Adams-Bashforth scheme.The influence of rotation on streamwise velocity,crosswise velocity mean temperature analyzed.The results show that turbulent kinetic energy decreases with increase number when centrifugal buoyancy force neglected.The Roτ=1.5 15 percent compared Roτ=0.If effect taken into account,for radially outwards flow,the those without force,and converse for inwards.It found increases 17 at Grτ,L=0,but it 43 inwards.