FLUID MECHANICS 2 ME 372 SECOND MIDTERM EXAM OPEN BOOK Prof. Dr. Melda ARPINLIOLU Research Assistant Eren ZKUR December 13,2022 100 Minutes 1) 30% In a test at Mach Number-0.01, a flat plate of length L, m and width 1, m is facing to air flow parallel to its length L at a speed of U m/ s. Air has a temperature of 13 C and a pressure of 97 kPa with a viscosity of 1.5 x 10 m/s. The plate upper and lower surfaces' boundary layer velocity distribution is given by: u-U [A+B (y/8) +C (y/8)] In this equation u is local flow velocity, A,B and C are constants, y is location and 8 is boundary layer thickness. Calculate for a totally laminar flow a) U and L b) Magnitudes of A, B, C c) Total frictional force of the plate Estimate d) Boundary layer flow rate of air in m/s