Question

A sharp of flat plate with length L= 70 cm and width b = 3 m is parallel to air stream of velocity U= 4.5 m/s. Given density of air $\rho$ = 1.2 kg/m$^3$ and kinematic viscosity of air $\nu$ = 1.5 x 10$^{-5}$ m$^2$/s. [Plat rata yang tajam dengan panjang L = 70 cm dan lebar b = 3 m selari dengan aliran udara dengan kecepatan U = 4.5 m / s. Diberi ketumpatan udara $\rho$ = 1.2 kg/m$^3$ dan kelikatan kinematik udara $\nu$ = 1.5 x 10$^{-5}$ m$^2$/s.] (i) Calculate the boundary layer thickness, displacement thickness and momentum thickness. [Kirakan ketebalan, ketebalan anjakan dan ketebalan momentum lapisan sempadan.] (3 Marks/Markah) (ii) Determine the skin friction coefficient and shear stress on the surface of the plate. [Tentukan pekali geseran kulit dan tegasan ricih pada permukaan plat.] (4 Marks/Markah) (iii) Estimate the drag force on one side of the plate. [Anggarkan daya seret pada satu sisi plat.] (4 Marks/Markah)

          A sharp of flat plate with length L= 70 cm and width b = 3 m is parallel to air stream of velocity U= 4.5 m/s. Given density of air $\rho$ = 1.2 kg/m$^3$ and kinematic viscosity of air $\nu$ = 1.5 x 10$^{-5}$ m$^2$/s.
[Plat rata yang tajam dengan panjang L = 70 cm dan lebar b = 3 m selari dengan aliran udara dengan kecepatan U = 4.5 m / s. Diberi ketumpatan udara $\rho$ = 1.2 kg/m$^3$ dan kelikatan kinematik udara $\nu$ = 1.5 x 10$^{-5}$ m$^2$/s.]

(i) Calculate the boundary layer thickness, displacement thickness and momentum thickness.
[Kirakan ketebalan, ketebalan anjakan dan ketebalan momentum lapisan sempadan.]
(3 Marks/Markah)

(ii) Determine the skin friction coefficient and shear stress on the surface of the plate.
[Tentukan pekali geseran kulit dan tegasan ricih pada permukaan plat.]
(4 Marks/Markah)

(iii) Estimate the drag force on one side of the plate.
[Anggarkan daya seret pada satu sisi plat.]
(4 Marks/Markah)

a sharp of flat plate with length l 70 cm and width b 3 m is parallel to air stream of velocity u 45 ms given density of air rho 12 kgm3 and kinematic viscosity of air nu 15 x 10 5 m2s plat 25693

Added by Jay A.

Question

Please give Ace some feedback