MEEG 332 Homework 3 (2012)
Due start of class Thursday 8 March
1. A steady twodimensional ow has the velocity potential
(x, y ) = x2 + 4y y 2 .
(a) Find the x and y velocity components as functions of x and y .
(b) Find a streamfunction for this ow in te
MEEG 332 Homework 6 (2012)
Due start of class Thursday 15 April
12
1. White (7th Ed.) Problem 6.7. Answers (a) 26 sec, (b) T = 66 C.
2. White (7th Ed.) Problem 6.8.
3. White (7th Ed.) Problem 6.9. Answers (a) 11.2 m, (b) 163 Pa, (c) 0.0182.
4. White (7th
MEEG 332 Homework 5 (2012)
Due start of class Thursday 22 March
1. A sheet of plywood of width w is lying on a at roof. A uniform wind of
speed U is in a direction parallel to the roof as shown. The density of the
air is and the viscosity is . The leading
P7160 A fishnet consists of 1m1ndia1neter st1ings overlapped and knotted to fonn 1 by
1cm squares. Estimate the drag of 1 1112 of such a net when towed normal to its plane at 3
n17s in 20°C seawater. What horsepower is required to tow 400 ft2 of thi
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16cm from the center ofgravity). The frier is partially filled with hot oil
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p9.22 Given the pitot stagnation temperature and pressure and the staticpressure measurements in Fig. P9.22, estimate the air velocity V, assuming (a) incompressible flow and (b)
compressible flow.
Solution: Given p = 80 kPa, po = 120 kPa, and T = 100C =
MEEG 332 Homework 4 (2012)
Due start of class Thursday 15 March
1. A cup anemometer is a device for measuring wind speed. A schematic
diagram is shown below (top view):
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(a) We wish to nd the relation between the wind speed V and th
MEEG 332 Homework 2 (2012)
Due: Start of class Thursday 1 March
1. A potential source of strength m = 2 is located at the point (1,0) in
the (x, y ) plane. There is also a sink (of strength m = 1) at the point(1,0)
and a uniform stream of speed U = 1 in
MEEG 332 Homework 1 (2011) Due 11 a.m. Tuesday 22 February 1. Given u = 2y 2 2x2 and v = 4xy , nd a streamfuunction for this twodimensional ow. Plot the pattern of streamlines in the (x, y ) plane showing the direction of ow on each streamline. Verify th
Chapter 9 Compressible Flow
655
9.35 Helium, at To = 400 K, enters a nozzle isentropically. At section 1, where A1 = 0.1 m2, a pitotstatic arrangement (see Fig. P9.25) measures stagnation pressure of 150 kPa and static pressure of 123 kPa. Estimate (a) M
Chapter 9 Compressible Flow
653
9.32 The large compressedair tank in Fig. P9.32 exhausts from a nozzle at an exit velocity of 235 m/s. The mercury manometer reads h = 30 cm. Assuming isentropic flow, compute the pressure (a) in the tank and (b) in the at