In the Blasius equationstream function:j is a dímensionless planep(x, y)f(n)VDUXValues of f are not given in Table 7.1, but one publishedvalue is f(2.0) = 0.6500. Consider airflow at 6 m/s, 20°C,and 1 atm past a flat plate. Atx= 1 m, estimate (a) the heighty; (b) the velocity, and (c) the stream function at 7= 2.0. y[U/(vx)]!2y[U/(vx)]!2u/Uu/U0.00.02.80.811520.846050.876090.901770.923330.941120.20.066413.00.40.132773.20.60.198943.40.80.264713.61.00.329793.81.20.393784.00.955521.40.456274.20.966961.60.516764.40.975871.80.574774.60.982692.00.629774.80.987792.20.681325.00.991552.40.728991.000002.60.77246

Given,fη=ψx,yvUx (Blasius equation)η=2f(2.0)=0.6500U∞=6 m/secAt P=1 atm T=20 °CKinematic visocity,…

Answered: In the Blasius equation stream…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Q.3 Air (density 1.2 kg/m3 and kinematic viscosity 15 centistokes) flows over a flat plate, at zero angle of incidence, at a velocity of 20 m/s. If Reynolds number at transition is taken as 2.5 × 105, maximum distance, from leading edge up to which the boundary layer remains laminar is
QUESTION 4 | (a) The Stokes number, S1, used in particle-dynamics studies is a dimensionless combination of five variables: acceleration of gravity g, viscosity µ, density p, particle velocity U, and particle diameter D. If St is propotional to u and inversely propotional to g, find its dimensionless form. (b) When tested in water at 20°C flowing at 2 m s'', an 8 cm diameter sphere has a measured drag force of 5 N. Determine the velocity and drag force on 1.5 m diameter weather balloon moored in sea-level standard air under dynamically similar conditions? (c) The power, W, generated by a certain windmill design depends upon its diameter, D, the air density, p, the wind velocity, V, the rotation speed, 2, and the number of blades n. By using velocity V, diameter D and density p as the repeating variables, prove the dimensionless relationship is given by W Ω pD?y³ Dyn
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