Everensel, Cahit 784-6093 f784-1701

Greiner, Miles (MIT maybe can help) 784-4873

Kaszeta

Snyder Miles (MIT maybe can help) 784-4873

Snyder, Brad: Mech Eng Dept, [home=786-8590 leave message] (UNR) 89557 784-6939 f:784-1701 ç From Cengal 99-04-23 visited on phone. May do some consulting.

99-May-10 1 hour @ 100 paid: Use Fluid mechanics 3-rd Edition by Frank White. Measurement of Fluid flow by means of Orifice Plates, Nozzles & Venturi tubes inserted in circular cross sections by Int. Org of Standards and Rep. DIS-5167 Geneva, April 1976; ASME Fluid Meters Research Committee ISO-ASME Orifice Coefficient Equations, Mechanical Engineering, July ' 81 pg 44-45.

Derive from Navier Stokes. Disk analysis: Use Bernoulli - pressure has to increase - positive pressure gradient. Growing boundary layer - flow separation - sudden catastrophic change in boundary layer - momentum balance - pressure drop at separation - lowest pressure at center - non-compressible assumption - p + 1/2 rho v^2 = k - v smaller due to mass conservation.

Viscous Fluid Flow 2-ed by Frank White pg 268. Thwaites Method - correlate all boundary layers

Spot on dish with water flowing on it.

Re = V h / mu = 100 * 10^-4 / (1.6 * 10^-5) = 62.5 * 10 = 625

f = 24/Re = .0384 = 3.84 * 10-2

l/d = 20/.1 = 200 = 2 * 10^2

1/2 rho v^ = .5 * 1.2 * 100 * 100 = 6 * 10^3

dP = f (l/d) (1/2 rho V^2) = 46.08 * 10^3 = 46800 pa = .468 atm