![]() Plate at 60 oC with a free stream velocity of 6 m/s. The average shear stress with local shear stress (shear stress at the trailing Air at 40 ° C is flows over a flat plate of 0.9 m at a velocity if the plate is 1 m wide and 80C, calculate the following at x = 300 mm.ġ. Drag force: Fd = 1.328 * 0.5 * 1.225 kg/m^3 * (5 m/s)^2 * 4 m^2 = 257.Air at 20C at atmospheric pressure flows over a flat plate at a velocity of 3 Drag coefficient: Cd = 1.328 (for a flat plate) Cross-sectional area of the plate: A = 2 m * 2 m = 4 m^2 Surface area of the plate: A = 2 m * 2 m = 4 m^2 ![]() Using the given values, we can calculate: ![]() Drag force: Fd = Cd*0.5*rho*u^2*A, where Cd is the drag coefficient and A is the cross-sectional area of the plate. Convective heat transfer rate: Q = h*A*(Ts - T∞), where A is the surface area of the plate. The Prandtl number for air is approximately 0.7. The Reynolds number can be calculated using the equation Re = rho*u*L/mu, where rho is the density of air, mu is the dynamic viscosity of air, and L is the length of the plate. The Nusselt number can be calculated using the equation Nu = 0.664*(Re^0.5)*(Pr^(1/3)), where Re is the Reynolds number and Pr is the Prandtl number. Average convection heat transfer coefficient: h = Nu*k/L, where Nu is the Nusselt number and k is the thermal conductivity of air. (a) For airflow, we can use the following equations:
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