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7.87 A 1:40 scale model of a ship is to be tested in a towing tank. Determine the required kinema...
A model of a submarine, 1:15 scale is to be tested at 180ft/s in a wind...
A model of a submarine, 1:15 scale is to be tested at 180ft/s in
a wind tunnel with standard sea-level air, while the prototype will
be operated in sea water.
A model of a submarine, 1:15 scale, is to be tested at 180 ft/s in a wind tunnel with standard sea-level air, while the prototype will be operated in seawater. Determine the speed of the prototype to ensure Reynolds number similarity. Hint: The Reynolds number of the model and prototype...
Problem 6: Measurements of drag force are made on a model automobile in a towing tank...
Problem 6: Measurements of drag force are made on a model automobile in a towing tank filled with fresh water. The model length scale is 1/5 that of the prototype. State the conditions required to ensure dynamic similarity between the model and prototype. Determine the fraction of the prototype speed in air at which the model test should be made in water to ensure dynamically similar conditions Measurements made at various speeds show that the dimensionless force ratio becomes constant...
Fluid Mechanics QUESTION 3 State 2 applications of dimensional analysis. (a) (2 marks) (b) The drag force, Fo acting...
Fluid Mechanics
QUESTION 3 State 2 applications of dimensional analysis. (a) (2 marks) (b) The drag force, Fo acting on a ship is considered to be a function of the fluid density (p) viscosity (H). exavitlg). ship velocity (V), and characteristic length (). Using Buckingham П theorem, determine a set ofsuitable dimensionless numbers to describe the relationship.Fo f(p.H.g.V (4 marks) A 1:60 scale model of a ship is used in a water tank to simulate a ship speed of 10...
Please be quick!!! A 1:7 scale model simulates the operation of a large turbine . If...
Please be quick!!! A 1:7 scale model simulates the operation of a large turbine . If water at same temperature is used in both model and prototype, Using The Reynolds number as Pi group ρωD2/μρωD2/μ, the model to prototype speed ratio ωm/ωp would be? Select one: a. 59 b. 49 c. 40 d. 38
B1 a Show that the resistance to motion of a ship through water is given by [13] CF f(R, Fr) where the three dimensionless groups (the Force Coefficient, Reynolds number and Froude number)are given b...
B1 a Show that the resistance to motion of a ship through water is given by [13] CF f(R, Fr) where the three dimensionless groups (the Force Coefficient, Reynolds number and Froude number)are given by LI /Lg pu'L were F is the resistance force, u is the speed of the ship, L is the length of the ship, ρ is the density of water, is the dynamic viscosity of water and g is the acceleration due to gravity b)For a...
Q1. (a) For a flow phenomenon governed mainly by viscous forces, derive the scale factors for...
Q1. (a) For a flow phenomenon governed mainly by viscous forces, derive the scale factors for velocity, force and power in terms of 24, , and I, where subscripts L, p and u are length, density and dynamic viscosity respectively and is the ratio of the value of "x" in the prototype to the value of "x" in the model. [4 marks) (b) Volumetric flow rate (discharge) Q through a circular pipe with diameter D can be measured by measuring...
could you help me with numbers 1-3 Question 1: Use the Repeating Method Only! Water sloshes...
could you help me with numbers 1-3
Question 1: Use the Repeating Method Only! Water sloshes back and forth in a tank as shown in the figure below. The frequency of sloshing. 6, is assumed to be a function of the acceleration of gravity. 8. the average depth of the water, h, and the length of the tank, C. Develop a suitable set of dimensionless parameters for this problem using g and l as repeating variables. Question 2, Flow with...
Chemical Engineering Fluid Mechanics 30. The purpose of a centrifugal pump is to increase the pressure...
Chemical Engineering Fluid Mechanics 30. The purpose of a centrifugal pump is to increase the pressure of a liquid in order to move it through a piping system. The pump is driven by a motor, which must provide sufficient power to operate the pump at the desired conditions. You wish to find the pressure developed by a pump operating at a flow rate of 300 gpm with an oil having a specific gravity (SG) of 0.8 and a viscosity of...
Encircle the correct answer for the following questions: • What is the hydraulic diameter of a...
Encircle the correct answer for the following questions: • What is the hydraulic diameter of a rectangular air ventilation duet whose cross section is 1 m by 25 cm? (a) 25 cm (b) 40 cm (c) 100 cm (d) 75 cm (e) 50 cm Oil = 0.1kg/ms, specific gravity= 0.9] flows through a 50-m-long smooth 8-cm-diameter pipe. The maximum pressure drop for which laminar flow is expected is approximately • • (a) 40 kPa (b) 50 kPa (c) 60 kPa...
CENTRE INDEX NUMBER SECTION B 30 marks] Calculate the discharge through a pipe of diameter 200...
CENTRE INDEX NUMBER SECTION B 30 marks] Calculate the discharge through a pipe of diameter 200 mm when the difference of pressure head between the ends of the pipe 500 m apart is 4 m of water. Take the value off= 0.009 in the formula hl= a) 19.5e/s b)2.0es e)03 m's d) 29.3 e/s 2. A scale 1:50 scale model of ship is towed through sea water at a speed of 1 ms. A force of 2 N is required...
A model of a submarine, 1:15 scale is to be tested at 180ft/s in
a wind tunnel with standard sea-level air, while the prototype will
be operated in sea water.
A model of a submarine, 1:15 scale, is to be tested at 180 ft/s in a wind tunnel with standard sea-level air, while the prototype will be operated in seawater. Determine the speed of the prototype to ensure Reynolds number similarity. Hint: The Reynolds number of the model and prototype...
Problem 6: Measurements of drag force are made on a model automobile in a towing tank filled with fresh water. The model length scale is 1/5 that of the prototype. State the conditions required to ensure dynamic similarity between the model and prototype. Determine the fraction of the prototype speed in air at which the model test should be made in water to ensure dynamically similar conditions Measurements made at various speeds show that the dimensionless force ratio becomes constant...
Fluid Mechanics
QUESTION 3 State 2 applications of dimensional analysis. (a) (2 marks) (b) The drag force, Fo acting on a ship is considered to be a function of the fluid density (p) viscosity (H). exavitlg). ship velocity (V), and characteristic length (). Using Buckingham П theorem, determine a set ofsuitable dimensionless numbers to describe the relationship.Fo f(p.H.g.V (4 marks) A 1:60 scale model of a ship is used in a water tank to simulate a ship speed of 10...
B1 a Show that the resistance to motion of a ship through water is given by [13] CF f(R, Fr) where the three dimensionless groups (the Force Coefficient, Reynolds number and Froude number)are given by LI /Lg pu'L were F is the resistance force, u is the speed of the ship, L is the length of the ship, ρ is the density of water, is the dynamic viscosity of water and g is the acceleration due to gravity b)For a...
Q1. (a) For a flow phenomenon governed mainly by viscous forces, derive the scale factors for velocity, force and power in terms of 24, , and I, where subscripts L, p and u are length, density and dynamic viscosity respectively and is the ratio of the value of "x" in the prototype to the value of "x" in the model. [4 marks) (b) Volumetric flow rate (discharge) Q through a circular pipe with diameter D can be measured by measuring...
could you help me with numbers 1-3
Question 1: Use the Repeating Method Only! Water sloshes back and forth in a tank as shown in the figure below. The frequency of sloshing. 6, is assumed to be a function of the acceleration of gravity. 8. the average depth of the water, h, and the length of the tank, C. Develop a suitable set of dimensionless parameters for this problem using g and l as repeating variables. Question 2, Flow with...
Chemical Engineering Fluid Mechanics 30. The purpose of a centrifugal pump is to increase the pressure of a liquid in order to move it through a piping system. The pump is driven by a motor, which must provide sufficient power to operate the pump at the desired conditions. You wish to find the pressure developed by a pump operating at a flow rate of 300 gpm with an oil having a specific gravity (SG) of 0.8 and a viscosity of...
Encircle the correct answer for the following questions: • What is the hydraulic diameter of a rectangular air ventilation duet whose cross section is 1 m by 25 cm? (a) 25 cm (b) 40 cm (c) 100 cm (d) 75 cm (e) 50 cm Oil = 0.1kg/ms, specific gravity= 0.9] flows through a 50-m-long smooth 8-cm-diameter pipe. The maximum pressure drop for which laminar flow is expected is approximately • • (a) 40 kPa (b) 50 kPa (c) 60 kPa...
CENTRE INDEX NUMBER SECTION B 30 marks] Calculate the discharge through a pipe of diameter 200 mm when the difference of pressure head between the ends of the pipe 500 m apart is 4 m of water. Take the value off= 0.009 in the formula hl= a) 19.5e/s b)2.0es e)03 m's d) 29.3 e/s 2. A scale 1:50 scale model of ship is towed through sea water at a speed of 1 ms. A force of 2 N is required...
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