FLUID MECHANICS (LL) W/CONNECT
4th Edition
ISBN: 9781264123728
Author: CENGEL
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 6, Problem 91P
To determine
(a)
The relation for acceleration.
To determine
(b)
The relation for velocity.
To determine
(c)
The relation for the distance travelled.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Problem# 5
Container is placed over incliced plare, it accelarate at 10 m/s2, will the water inside tank spil from the
container tank (200 300*400), the level of water inside the tank is 150
Also determine the force on the left side of the contaner
In a pelton wheel, calculate the power available at the inlet and the hydraulic efficiency ofthe turbine. The wheel is having semi-circular buckets, which functions under a head of 150mand consumes 0.06 m3/s of water. The 750 mm diameter wheel turns 800 rpm. Assume thecoefficient of velocity as unity.
As a junior field engineer, you have been asked to assist a contractor in resolving the following problem.
A 4.9 kW motor and gear drive rated at 175 rpm has been shipped with the four impeller blades listed
below. The baffled rapid mix tank to which one of the impellers will be installed is 3.0 m² in volume
(1.56 m diameter and 1.56 m depth).
Assume water temperature of 10C, G= 1000s, water density = 1000 kg/m³, and motor power to water
power transfer efficiency of 80%.
Impeller options:
A. Axial flow, 3 blades, diameter = 0.48 m, N₁-1.0
B. Axial flow, 3 blades, diameter = 0.61 m, Np=1.0
C. Radial flow, 6 blades, diameter = 0.48 m, Np=6.3
D. Radial flow, 6 blades, diameter = 0.61 m, Np 6.3
Answer the following:
3. What is the rotational speed (n) in rps?
b. What is the power required in kW for impeller option A?
What is the power required in kW for impeller option C?
C.
d. What is the power transferred to the water from the selected motor in kW?
e. Which impeller should be used?…
Chapter 6 Solutions
FLUID MECHANICS (LL) W/CONNECT
Ch. 6 - Express Newton’s second law of motion for rotating...Ch. 6 - Express Newton’s first, second, and third laws.Ch. 6 - Is momentum a vector? If so, in what direction...Ch. 6 - Express the conservation of momentum principle....Ch. 6 - How do surface forces arise in the momentum...Ch. 6 - Explain the importance of the Reynolds transport...Ch. 6 - What is the importance of the momentum-flux...Ch. 6 - Write the momentum equation for steady...Ch. 6 - In the application of the momentum equation,...Ch. 6 - Two firefighters are fighting a fire with...
Ch. 6 - A rocket in space (no friction or resistance to...Ch. 6 - Describe in terms of momentum and airflow how a...Ch. 6 - Does it take more, equal, or less power for a...Ch. 6 - In a given location, would a helicopter require...Ch. 6 - Describe body forces and surface forces, and...Ch. 6 - A constant-velocity horizontal water jet from a...Ch. 6 - A horizontal water jet of constant velocity V from...Ch. 6 - A horizontal water jet from a nozzle of constant...Ch. 6 - A 2.5-cm-diameter horizontal water jet with a...Ch. 6 - A 90 elbow in a horizontal pipe is used to direct...Ch. 6 - Repeat Prob. 6-20 for the case of another...Ch. 6 - A horizontal water jet impinges against a vertical...Ch. 6 - Water enters a 7-cm-diameter pipe steadily with a...Ch. 6 - A reducing elbow in a horizontal pipe is used to...Ch. 6 - Repeat Prob. 6-24 for the case of = 125°.Ch. 6 - A 100-ft3/s water jet is moving in the positive...Ch. 6 - Reconsider Prob. 6-26E. Using appropriate...Ch. 6 - Commercially available large wind turbines have...Ch. 6 - A fan with 24-in-diameter blades moves 2000 cfm...Ch. 6 - A 3-in-diameter horizontal jet of water, with...Ch. 6 - Firefighters are holding a nozzle at the end of a...Ch. 6 - A 5-cm-diameter horizontal jet of water with a...Ch. 6 - Prob. 33PCh. 6 - A 3-in-diameter horizontal water jet having a...Ch. 6 - An unloaded helicopter of mass 12,000 kg hovers at...Ch. 6 - Prob. 36PCh. 6 - Water is flowing through a 10-cm-diameter water...Ch. 6 - Water flowing in a horizontal 25-cm-diameter pipe...Ch. 6 - Prob. 39PCh. 6 - Water enters a centrifugal pump axially at...Ch. 6 - An incompressible fluid of density and viscosity ...Ch. 6 - Consider the curved duct of Prob. 6-41, except...Ch. 6 - As a follow-up to Prob. 6-41, it turns out that...Ch. 6 - Prob. 44PCh. 6 - The weight of a water tank open to the atmosphere...Ch. 6 - A sluice gate, which controls flow rate in a...Ch. 6 - A room is to be ventilated using a centrifugal...Ch. 6 - How is the angular momentum equation obtained from...Ch. 6 - Prob. 49CPCh. 6 - Prob. 50CPCh. 6 - Prob. 51CPCh. 6 - A large lawn sprinkler with two identical arms is...Ch. 6 - Prob. 53EPCh. 6 - The impeller of a centrifugal pump has inner and...Ch. 6 - Water is flowing through a 15-cm-diameter pipe...Ch. 6 - Prob. 56PCh. 6 - Repeat Prob. 6-56 for a water flow rate of 60 L/s.Ch. 6 - Prob. 58PCh. 6 - Water enters the impeller of a centrifugal pump...Ch. 6 - A lawn sprinkler with three identical antis is...Ch. 6 - Prob. 62PCh. 6 - The impeller of a centrifugal blower has a radius...Ch. 6 - An 8-cm-diameter horizontal water jet having a...Ch. 6 - Water flowing steadily at a rate of 0.16 m3/s is...Ch. 6 - Repeat Prob. 6-66 by taking into consideration the...Ch. 6 - A 16-cm diameter horizontal water jet with a speed...Ch. 6 - Water enters vertically and steadily at a rate of...Ch. 6 - Repeal Prob. 6-69 for the case of unequal anus-the...Ch. 6 - Prob. 71PCh. 6 - Prob. 72PCh. 6 - A spacecraft cruising in space at a constant...Ch. 6 - A 60-kg ice skater is standing on ice with ice...Ch. 6 - A 5-cm-diameter horizontal jet of water, with...Ch. 6 - Water is flowing into and discharging from a pipe...Ch. 6 - Indiana Jones needs So ascend a 10-m-high...Ch. 6 - Prob. 79EPCh. 6 - A walnut with a mass of 50 g requires a force of...Ch. 6 - Prob. 81PCh. 6 - Prob. 82PCh. 6 - A horizontal water jet of constant velocity V...Ch. 6 - Show that the force exerted by a liquid jet on a...Ch. 6 - Prob. 85PCh. 6 - Prob. 86PCh. 6 - Water enters a mixed flow pump axially at a rate...Ch. 6 - Prob. 88PCh. 6 - Water enters a two-armed lawn sprinkler along the...Ch. 6 - Prob. 91PCh. 6 - Prob. 92PCh. 6 - Prob. 93PCh. 6 - Prob. 94PCh. 6 - A water jet strikes a moving plate at velocity...Ch. 6 - Water flows at mass flow rate m through a 90°...Ch. 6 - Prob. 97PCh. 6 - Water shoots out of a Iar2e tank sitting a cart...Ch. 6 - Prob. 99PCh. 6 - Prob. 100PCh. 6 - Prob. 101PCh. 6 - Consider water flow through a horizontal, short...Ch. 6 - Consider water flow through a horizontal. short...Ch. 6 - Prob. 104PCh. 6 - Prob. 105PCh. 6 - Prob. 106PCh. 6 - The velocity of wind at a wind turbine is measured...Ch. 6 - The ve1ocity of wind at a wind turbine is measured...Ch. 6 - Prob. 109PCh. 6 - Prob. 110PCh. 6 - Prob. 111PCh. 6 - Consider the impeller of a centrifugal pump with a...Ch. 6 - Prob. 113PCh. 6 - Prob. 114P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- A steel pulley with a mean rim radius of 120 mm is rotated at a speed of 1100 rpm. If the mass of the rim is 5 kgs, What is the centrifugal force?arrow_forwardProvide the neccesary equations in designing a centrifugal compressor such as the dimensions for impeller. What are the initial given values?arrow_forwardA liquid of density ρ fl ows through a 90 ° bend as shown inFig. and issues vertically from a uniformly poroussection of length L . Neglecting pipe and liquid weight,derive an expression for the torque M at point 0 required tohold the pipe stationary.arrow_forward
- Need part 1 and 2arrow_forwardExplain with the aid of diagram the action of the hydraulic press The following data pertains to a hydraulic press: The diameters of the plunger and ram are 50 mm and 0.5 m respectively. The ram is 1.75 m below the plunger and the mass density of the liquid in the hydraulic press is 820 kg/m³. The mass of the plunger and the ram are 6 kg and 400 kg respectively. The plunger is forced vertically down by a lever with a mechanical advantage of 6 to 1 onto which a force of 800 N is applied. The ram moves upwards when the plunger moves downwards. Determine the maximum lifting force exerted by the ram.arrow_forwardWater is flowing at a rate of 25 gpm in a pipe and at one end of the pipe, the internal diameter is 2in and the gauge pressure is 10psig, and at the discharge end 20ft away horizontally, the water discharges into the atmosphere through a 3.5-in ID pipe. Determine the friction in ft of water?arrow_forward
- - A centrifugal pump with an impeller diameter of 350mm and specific speed of 19.15 and requires 15 kW to discharge 2.4 m³ /min of water, and runs at 1800 rpm. Determine the discharge, head and power required when the pump runs at 2400 rpm. The same discharge could be obtained by altering the impeller diameter without changing the rotational speed for this case find the new diameter of the impeller the head and the power required.arrow_forwardNearly frictionless vertical guide rails maintain a plate of mass mp in a horizontal position, such that it can slide freely in the vertical direction. A nozzle directs a water stream of area A against the plate underside. The water jet splatters in the plate plane, applying an upward force against the plate. The water flow rate m. (kg/s) can be controlled. Assume that distances are short, so the velocity of the rising jet can be considered constant with height. (a) Determine the minimum mass flow rate m. min necessary to just levitate the plate and obtain a relation for the steady-state velocity of the upward moving plate for m. > m. min. (b) At time t = 0, the plate is at rest, and the water jet with m . > m . min is suddenly turned on. Apply a force balance to the plate and obtain the integral that relates velocity to time (do not solve).arrow_forwardIn an external gear pump, if the delivery rate is 30 cm/revolution, the prime mover's speed which is connected to the pump of with 2670 rpm,Determine The pump delivery in terms of litres per minute isarrow_forward
- The bottom quarter of a vertical cylindrical tank of total height 0.4 m and diameter is filled with a liquid (SG>1, like glycerin) and the ret with water. The tank is now rotated about its vertical axis at constant angular speed w. Determine the value of angular speed in rad/s when point P on the axis at the liquid-liquid interface touches the bottom of the tank. Include the free body diagram in your solution. a.12.1 b.10.3 c.14.4 d.13.2arrow_forwardA centrifugal pump is generating a flow rate of 16 m3/min and a lift of 70 m at a rotational speed of 1560 rpm. What is the maximum allowable suction height for this pump? However, the water temperature is 40°C.arrow_forwardPlease Include Free Body Diagram.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- International Edition---engineering Mechanics: St...Mechanical EngineeringISBN:9781305501607Author:Andrew Pytel And Jaan KiusalaasPublisher:CENGAGE L
International Edition---engineering Mechanics: St...
Mechanical Engineering
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:CENGAGE L
Dynamics - Lesson 1: Introduction and Constant Acceleration Equations; Author: Jeff Hanson;https://www.youtube.com/watch?v=7aMiZ3b0Ieg;License: Standard YouTube License, CC-BY