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# Fluid Mechanics

### Fluid mechanics lab-experiment

Included are my labs sheets, data I calculated, and a poor sketch of a graph at this stage. On page 52 would someone please help me to answer all the questions and the one pertaining to my graph? See attached file for full problem description.

### Elastic Moduli and Pascal's Principle and Fluid Dynamics

Question 1: A bimetallic rod is composed of brass and copper. a. If the rod is subjected to a compressive force, will the rod bend toward the brass or the copper? Why? b. Justify your answer mathematically if the compressive force is 5.00 X 104 N. Question 2: A water dispenser for pets has an inverted plastic bottle. When a

### Problems on kinematics, Newton's Laws, work, energy, fluid mechanics, heat and thermodynamics

1) A person paddling a canoe travels five miles down a canal and then seven miles up the canal. a) How far did the person travel? b) What is his final displacement? 2) A test vehicle on a track goes through photo gates spaced 25 m apart at the following times: 2.00sec, 3.30sec, 4.30sec a) Plot the pos

### Water pressure at the base of Hoover Dam

At the base of the Hoover Dam on the Colorado River, the depth of the water is 726 ft. What is the pressure at the base of the dam? Neglect the pressure due to the atmosphere. I believe the answer is 2.17 MPa.

### Center of Mass..

A bar balances 30.0 cm from one end. When a 0.75 kg mass is hung from that end, the balance point moves 8.0 cm toward that end. What is the mass of the bar?

### Similitude Test and Dimensional Analysis

We are designing a new type of racing boat hull. In the model tests in a towing basin we will use a model one-tenth the size of the actual boat. See attached file for full problem description.

### Questions of Fluid Mechanics

A sailboat is moving in the "y" direction. The wind approaches the boat at an angle of 45 degrees to the "y" direction and is turned by the sails such that it leaves in exactly the minus "y" direction. A) If we assume that the average velocity of the incoming and outgoing wind is 10 m/s and that the mass flow rate of air being

### Fluid Mechanics for a U-band

(See attached file for full problem description) The pipe U-band in the figure attached is connected to a flow system by flexible hoses that transmit no force. The pupse has inner diameter of 3 inches. Water is flowing through the pipe at a rate of 600 gallons/minute. The pressure at point 1 is 5 psig and at point 2 is 3 psig

### Determining the weight of an automobile

The four tires of an automobile are inflated to a gauge pressure of 2.17e+5 Pa. Each tire has an area of 0.0271 m^2 in contact with the ground. Determine the weight of the automobile.

### Fluid dynamics: finding pressure

(See attached file for full problem description with diagram) --- A closed tank full of a fluid of sp gr. 1.3 is accelerated downward at 2/3g and to the right at 1g. The dimensions of the tank are L=2.5m and H = 3m The tank is labeled as follows: Upper Left corner =D, Upper Right Corner =A , Lower Right Corner = B, Lower Left

### Fluid Dynamics and Forces

A vane on the moving cart deflects a 10 cm jet of water as shown. The initial speed of the water jet is 20 m/s and the cart moves at 3 m/s. The vane splits the jet evenly (1/2 at 45º and 1/2 at 90º) What forces are exerted on the vane by the jet? (See attached file for full problem description with diagram)

### Siphon and Fluid Mechanics

A=30m, B=32m, C=27m, D = 26m The fluid is Water. Given the siphon system above; the head loss between the inlet and point B (highest point) is ¾ of the velocity head. The head loss in the pipe itself between B and the end of the pipe is ¼ of the velocity head. The pipe diameter is 25cm and alpha= 1. Find: 1. The dischar

### Fluid Dynamics in Closed Tank

A closed tank full of a fluid of sp gr. 1.3 is accelerated downward at 2/3g and to the right at 1g. The dimensions of the tank are L=2.5m and H = 3m The tank is labeled as follows: Upper Left corner =D, Upper Right Corner =A , Lower Right Corner = B, Lower Left Corner = C. (See attachment for diagram). Find a) The pressure at

### Mechanical Engineering Problem Sets

See attached file for full problem description. 1) The horizontal bar represented in figure is acted upon by the four vertical forces f1,f2,f3, and f4, whose location and characteristics are shown. Calculate the horizontal distance from point O at the base of F4 and horizontal line to the line of action of the resultant of t

### Moment of Inertia of a Sphere

A sphere consists of a solid wooden ball of uniform density 800kg/m^3 and radius 0.20 m and is covered with a thin coating of lead foil with area density 20kg/m^2 . Calculate the moment of inertia of this sphere about an axis passing through its center.

### Navier-Stokes Equations

Describe the additional assumptions , conditions ,and steps required to derive the Navier-Stokes Equations from the momentum equations. Use as little mathematics as possible.

### Solving a Fluid Mechanics Problem

In an industrial cooling process, water is circulated through a system. If the water is pumped with a speed of 0.45 m/s under a pressure of 400 torr from the first floor through a 6.0-cm diameter pipe, what will be the pressure on the next floor 4.0 m above in a pipe with a diameter of 2.0 cm?

### Density of Fluid

If h1 = 0.43 cm and h2 = 4.14 cm and the blue liquid in the U-tube is water (1000 kg/m3), what is the density of the green liquid?

### Change in water pressure

A horizontal pipe carries water. At one point, the pipe widens to four times its previous cross sectional area. If the speed of flow in the narrow part of the pipe is 4 ms, what is the change in pressure from the narrow to the wider part of the pipe?

### Fluid Mechanics: Ideal and viscous flow of fluids

1/ water is flowing smoothly in a closed pipe system. At one point the speed of the water is 3.0m/s, while at another point 2m higher the speed is 5.0m/s. (a) if the pressure is 50kPa at the lower point, what is the pressure at the higher point? (b) What would the pressure at the upper point be if the water were to stop flowing

### Find the time needed to pump out half the water in a water tank.

The tank is filled with water to a height h, meters, so you decide to empty it by letting the water flow steadily from an opening at the side of the tank, located near the bottom. The cross-sectional area of the tank is A1 square meters, while that of the opening is A2 square meters. How much time it would take to pump out half

### Mass and Center of mass of a rod

A rod of length 25.0 cm has linear density (mass-per-length) given by the following equation, = 50.0 g/m + 24.0x g/m^2, where x is the distance from one end. (a) What is its mass? (b) How far from the x = 0 end is its center of mass?

### Find the volume of the paperweight.

1. A pirate in a movie is carrying a chest (0.30 m X 0.30 m X 0.20 m) that is supposed to be filled with gold. To see how ridiculous this is, determine the weight (in newtons) of the gold. To judge how large this weight is, remember that 1 N = 0.225 lb. 2. An airtight box has a removable lid of area 1.3 X 10^-2 m^2 and ne

### Fluid mechanics Questions - Manning's Formula

11) The angle between the tow sloping sides of a standard triangular weir is 60 degrees. When the head of the crest of the weir is .525ft, the rate of discharge, in cubic feet per second, would be? .405 cfs, .331 cfs, .368 cfs, .294 cfs. 12) The diameter of a circular sewer is 42 in., and the rate of slope is .

### Fluid Mechanics

6) A sewer 24 in. in diameter is made of concrete pipe for which the value of n may be taken as .014. The rate of slope is .0007, and the depth of the liquid is 18.0 in. what is the rate of discharge. 6.3 cfs., 5.1 cfs, 5.5 cfs, 4.2 cfs 7) The Reynolds number for liquid flowing in a pipe is 28,600. The frictio

### Calculating Fluid Mechanics

1) The bed of a canal falls 2.63ft. vertically in a horizontal distance equal to 2150 ft. The rate of slope of the hydraulic grade line for the canal is? .00164, .00082, .00122, .00041 2) An open channel having a rectangular cross section is laid so that the rate of grade is .00048. The width of the channel is 10.00 ft., and

### Discussing a Bernoulli Problem

Please help understanding the effects of a stream which is flowing through a tube. I've prepared the following problem for discussion. Using Bernoulli's equation and the steady flow momentum relation to calculate the net force on a tube from a dynamic pressure drop and a water flow stream flowing through ta tube. See the a

### Venturi meter - Similitude problem

A model of a venturi meter has linear dimensions one-fifth those of the prototype. The prototype operates on water at 20 degrees Celsius, and the model on water at 95 degrees Celsius. For a throat diameter of 600 mm and a velocity at the throat of 6 m/s in the prototype, what discharge is needed through the model for similitude?

### Fluid Mechanics - Volume

10. Two containers contain water at 20 C and 92 C, respectively. How much water should be taken out from each container so that the resulting water mixture has a volume 362 L and a temperature of 30 C. (All these problem are in the book FLUID MECHANICS 9th edition, by Streeter, Wylie & Bedford ISBN: 0-07-062537-9).

### Losses due to sudden expansion in pipe

Air flows through a 650-mm-diameter duct at p=70kPa, t=10*C and the V=60m/s. The duct suddenly expands to 800-mm-diameter. Considering the gas as incompressible, calculate the losses in meter-newtons per newton of air, and the pressure difference in centimeters of water. See attached file for full problem description. (All