Ch. 1 Fluid Properties ( 1 )

Ch. 1 Fluid Properties ( 1 )

201110530 [Homework Assignment]1. Search any information or topics about Fluid Mechanics in Internet such as application, theory, or any kind of programs (computer models). Submit reports, and eStream results. . , . -, , , , . . , .

(Hydraulics) : . , . (Hydrodynamics) : . , . .

(viscosity) . (Viscous Fluid) : (Real Fluid) , . : (Idial Fluid),(Perfect Fluid) , , .

2. Submit the explanation of the class contents of this chapter similar to the works of former students.1) (Newton's law of viscosity) . [] y , v x , y s . .

2) Unit (SI and English Units : force, Atmospheric Pressure)[ ]- 1k 1m/s2 1N = 1 kg 1m/s2 = 1 kgm/s2 MKS kgf, kgW, kg tf, tW, t 1kgf = 1kg 9.8m/s2 = 9.8kgm/s2 = 9.8N

[ ] - 76cm 1 = 1atm = 760mmHg = 760Torr(pascal) : Pa (/)1 Pa = 1 N/m2 (atm) : atm(/)1 atm= 101 325 Pa(Torr) : Torr()1 Torr= 1 mmHg = 133.322 Pa

3) Law of Perfect Gas ( ) . . '' . . . , . (random). , . , . , . PV = nRT P , V , n , R 8.3145J/molK, T (T)(P)(V) . , - . .

4) Vapour Pressure () . . , , . . , () . . , . . . e' P , r .

, .

5) Surface Tension and Capillary Phenomena : Search the information in the internet and submit the results. ( )Surface Tension () , . , . . . . .

A 0. B, . . . , , , .

, . . , .

. . , 20 , , , , 0.0223, 0.07275, 0.025, 0.063, 0.465 N/m( ). , . , 10 0.07422, 20 0.07275, 30 0.07118, 40 0.06955 N/m . N/m . N/m = Nm/m2 = J/m2 . , .

Capillary Phenomena() . , . , . , . , . .

. T , , r , , g . . , . .

6) Explain the variation of viscosity with temperature and the unit of viscosity ( ) . Newton . . . . . . . . .

. , . (fluid statics) . , . . , .

Newton . . , , F, L, T , .Newton 2 . SI . . USC . poise(P) cgs. 1 poise . SI poise 10 . , 10 poise. (kinematic viscosity) .

7) Solve the example problem of 1.2 including coding 1.5 C (sleeve) . , . BASIC . D=0.8 in, L= 8.0 in, =0.001 in, R=2ft, = 0.0001 , 1200 rpm.

1.5

1 1 . , . . 2n , 1/2 . .

. .

1.6 BASIC . .