Air at 20 °C and 1 atm flows past a smooth flat plate at Uoo =20.1 m/s (below figure). A pitot stagnation tube, placed 1.9 mm from the wall, develops a water (Pw =998 kg/m3) manometer head h = 20.24 mm. Assume the transition for this plate occurs at Re=106. Take the density and dynamic viscosity of air at 20 °C and 1 atm, as Pa =1.205 kg/m3 and u= 1.81 x 10:5 kg/(m s). Boundary layer Figure 1: Pitot tube in a boundary layer. i) Calculate the velocity which is measured by the pitot tube. velocity: Number Units ii) Use this information with the Blasius solution to estimate the position x of the pitot tube. Position x: Number Units iii) Check to see if the flow is laminar Re number: Number

Air at 20 °C and 1 atm flows past a smooth flat plate at Uoo =20.1 m/s (below figure). A pitot stagnation tube, placed 1.9 mm from the wall, develops a water (Pw =998 kg/m3) manometer head h = 20.24 mm. Assume the transition for this plate occurs at Re=106. Take the density and dynamic viscosity of air at 20 °C and 1 atm, as Pa =1.205 kg/m3 and u= 1.81 x 10:5 kg/(m s). Boundary layer Figure 1: Pitot tube in a boundary layer. i) Calculate the velocity which is measured by the pitot tube. velocity: Number Units ii) Use this information with the Blasius solution to estimate the position x of the pitot tube. Position x: Number Units iii) Check to see if the flow is laminar Re number: Number

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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