CEE 3304
Spring 2008
HW #7 Control Volume Approach, and Continuity Principle
Problem 5.12 Given: Air flows in a square duct with velocity profile shown in the figure.
Find: (a) Volume flow rate: Q (b) Mean velocity: V (c) Mass flow rate: m (if de
Virginia Polytechnic Institute and State University
CEE 3304 Fluid Mechanics for Civil and Environmental Engineers Laboratory Manual Honor Pledge: "I have neither given nor received unauthorized assistance on this assignment."
Joe Arrowsmith Alex D
1. (25 points) In the space below, write out the general form of the continuity equation
and explain in words what each term represents.
2. [75 points) How many seconds will it take the water surface in the cylindrical tank
shown below to drop from h = 3.
CEE 3304 Fluid Mechanics for Civil and Environmental Engineers Exam 1 Spring Semester, 2008
Problem 3 (10 points) The Roanoke airport reports an atmospheric pressure reading of 30.90 inches of mercury (S = 13.57) and the temperature is 85 F. Calcul
CEE 3304
Spring 2008
HW #1 Physical Properties of Fluids
Problem 2.1 Given: An engineer needs density for an experiment with a glider. o F - 32o 74.3 - 32 = = 23.5o C Local temperature = 74.3 F, oC = 1.8 1.8 K = oC + 273o = 23.5 + 273 = 296.5 K
(
CEE 3304
Spring 2008
HW #2 Viscosity, Compressibility, and Static pressure
Problem 2.41 Given: A disk is rotated very close to a solid boundarydetails are provided in problem statement.
Find: a) Ratio of shear stress at r = 2 cm to shear stress at
CEE 3304
Fall 2007
HW #3 Pressure Measurements
Problem 3.12 Given: A hydraulic lift is being designed. Capacity = 20,000 lbf (10 tons). Weight of lift = 1000 lbf. Lift speed = 6 feet in 20 seconds. D = 2 to 8 inches. Piston pump data: Pressure rang
CEE 3304
Spring 2008
HW #4 Hydrostatic Pressure Forces
Problem 3.54 Given: Airplane flaying at 10 km altitude. The dimensions of the airplane window is 3025 cm The pressure inside the plane is 100 kPa Find: The pressure net force (outward) on the w
CEE 3304
Spring 2008
HW #6 Flow Kinematics, and Bernoulli's Equation
Problem 4.63 Given: Water in a flume is described in the problem statement.
Find: If gage A will read greater or less than gage B. Solution Both gage A and B will read the same p
CEE 3304
Spring 2008
HW #8 Momentum Equation
Problem 6.6 Given: Horizontal round jet strikes a plate. Water at 70oF, = 1.94 slug/ft3, Q = 2 cfs. Horizontal component of force to hold plate stationary: Rx = 200 lb.
Rx
Find: Speed of water jet: v
CEE 3304
Spring 2008
HW #5 Bouncy and Flow Kinematics
Problem 3.80 Given: A metal surface with liquid inside is described in the problem statement.
hc=-2.5ft
Find: Magnitude, direction, and location of horizontal and vertical components. Solution
CEE 3304 Fluid Mechanics for Civil and Environmental Engineers Exam 1 Spring Semester, 2008
Problem 1 (15 points)
1- A fluid is a substance that a) is essentially incompressible. b) always moves when subjected to a shearing stress. c) has a viscosi
{f
The gab, A, shown has a Width [3 into the paper and is in equilibrium. Develop an equation
LMDf the gate, as a function ofwidth b, radius R, freeboard h, and liquid
specific weight . The hinge at 0 is frictionless and the gate is uniform [has the same