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Fluid Mechanics

Aerodynamic lift in fluid dynamics

A small plane, having a mass of 3000 kg, is flying in air of density 1.0 kg/m^3. Air moves over the top and bottom surfaces of the wings at 160 m/s and 130 m/s, respectively. What is the net minimum wing area needed?

Fluid Dynamic and Flow Rate

A horizontal water main with a cross-sectional area of 200 cm^2 necks down to a pipe of area 50 cm^2. Meters mounted in the flow on each side of the transition coupling show a change in gauge pressure of 80 kPa. Determine the flow rate through the system, taking the fluid to be ideal.

Friction, Drag Force, and Heat Transfer

Air at 22C and at pressure of 120 kPa is flowing over a flat plate with a velocity of 4.5 m/s. If the plate is 50 cm wide and the surface in contact with the air is at 82C, calculate the following quantities at x = 42 cm: (a) the local friction coefficient; (b) the average friction coefficient; (c) the drag force; (d) the local

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

Pressures on the Bottom of a Swimming Pool at Opposite Ends

A swimming pool is 50 meters long by 23 meters wide and is lees deep at one end than at the other. The depth at the shallow end is 1.22 meters, and the depth at the deep end is 4.35 meters. The slope is continuous (smooth) from one end to the other. What is the difference in pressure on the bottom at opposite ends of the pool?

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?

Fluids and Dynamics

Please do problem 4 on the attached sheet and do step by step solutions showing equations used and how transformed to get the answer for each question for problem 4. Also give answer in units. If you can add how to think of these problems too I would appreciate it besides giving all the detail previously asked for. (See att

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?

Density and volume calculation

A piece of wood floats in oil of density 800 kgm with 25% of its volume above the surface of the oil. If the piece of wood is placed in water, it will float with what percentage of its volume above the water?

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?