Use the thermal wind equation to explain the presence of the jet stream.

Sketch the velocity gradients that arise from pressure-driven flow for a Newtonian liquid and a shear thinning liquid.

Dresden, Germany has a population of 700,000 and a population density of2200 km-2 in the urban area. Assume that the electrical needs of Dresden are an average of1.0 kWe per capita and these are satisfied by a wind farm consisting of 100 m diameterthree-rotor wind turbines operating at optimal efficiency and with optimal spacing. If thewind velocity is constant at 7 m/s, what is the area of the wind farm? The optimal efficiency, η = 0.49 and The ideal spacing for a turbine is 300m by 1000 meters  Sustainable energy, 2nd edition, Ch 10, Problem 17P

1 atm = 2116 lb/ft2 = 1.01 × 105 N/m2. An airfoil is in a freestream where p∞ = 0.61 atm, ρ∞ = 0.819 kg/m3,and V∞ = 300 m/s. At a point on the airfoil surface, the pressure is0.5 atm. Assuming isentropic flow, calculate the velocity at that point.