Question

robe is mounted within a cone which is supported by a rectangular rod. The air flow velocity is 50 m/s. The air density dynamic viscosity is 1.78*10 kg/m.s. If the drag coefficient for the cone is 0.8, determine drag coefficient of ad and the total moment due to the rod and cone relative to the pivot A. Hint: calculate first the moment for the rod the rectangular rod and the total moment due to the and then the moment for the cone. (Objective 3.1) Comprehension (Project the area indicating the dimensions to calculate the drag force) 15 points Knowledge (Governing Equation) 13 points! Hot film cone 50m/s 4cm 30cm S- Application (Solution Procedure, all computations) 120 nautit

Answer 1

Solution - problem ? As shown in figure a hot - film is mounted within a cone which is supported by a rectangular aud. Hot film cone The air flow velocity a va sumber. somfees a luce, - Ain density = Pows - 1:2.25 kg/m2 Dynamic Viscosity of aus = lenin 3 1.98x109 lg Imac 30ce, L Drag coafficient for come = (co) come = 0.8 Need to findout drag wefficient of rectangular and (comod, t he Total moment due to the rod and come relative to pint a figure it in a nod's drag and moment, assuming smouth first we findout cylinder ۳) و .م( مح۱۱) رم ( Reynoldo meuben = Pelaad l quote) = 123 Corso ) I from tables for The had = 17200 (Corod Fll. Ę Drag force on and = (Folhod - Tohud ( [phie (Ve) (A) (Fokud = (.1347) 1.925)| su]2 (0.3)(0.005) Colout = 2.527 moment due to the rod relative to pivut o = (manda = (2.527) (0.3) in (Model = 0.7579 Ninth moment due to the core geletive to pinut b = (Mae) A = (Meut + (cobre(f) (N/6.04) (Mcone ) A = 0.4579 +(0-8)(125) (5014004]][0-32) (0.31) .: (Moone), = 1.3851 N. with