A computational study of heat transfer in a laminar oscillating confined slot jet impinging on an isothermal surface at low Reynolds numbers

Heat transfer in a laminar confined oscillating slot jet is numerically investigated. A uniform inlet velocity profile oscillating with an angle φ, having the following sinusoidal shape: φ= φmax*sin(2πft). φ is in radians, φmax is the maximum jet angle, and f is the oscillation frequency. The height-to-jet-width ratio (H/w) was fixed to 5 and the fluid’s Prandtl number which is one of the dimensionless governing groups is 0.74. The other dimensionless groups characterizing this problem, which are, Strouhal’s number, St, and Reynolds number, Re, where varied. Re was in the range 100<Re<400, and St was in the range 0.05<St