Why does the definition of npsh include the dynamic head

Assignment Help Mechanical Engineering
Reference no: EM13216706

Why does the definition of NPSH include the dynamic head of the fluid? Isn't cavitation based only on the difference between the static head and the local vapor pressure?

Reference no: EM13216706

Questions Cloud

Quantity surveyin-indispensable discipline : Quantity surveyin as we know it today has developed into an indispensable discipline in the construction industry from its humble beginnings in the 18th century.
Draw the projections of a rhombus having diagonals : draw the projections of a rhombus having diagonals 125mm and 50 mm long, the smaller diagonal of which is parallel to both the principal planes, while the other is inclined at 30 to the H.P.
Movement toward the constitutional convention : The issue that finally touched off the movement toward the Constitutional Convention was
Find the necessary static deflection of the isolator : If the instrument weighs 85N, find the necessary static deflection of the isolator.
Why does the definition of npsh include the dynamic head : Why does the definition of NPSH include the dynamic head of the fluid? Isn't cavitation based only on the difference between the static head and the local vapor pressure?
Calculate the maximum depths : An unsuited free diver can work in a pressure of up to 490KN/m^2 and a suited diver in pressure of up to 1815 KN/m^2. Calculate the maximum depths at which they might work in sea-water which has a specific gravity of 1.03.
Which political party did littlefield say frank baum support : Which political party did Littlefield say Frank Baum supported?
Compute the second specimen radius after deformation : compute the second specimen's radius after deformation.
Ensure protected health information : Identify (3) ways to ensure Protected Health Information (PHI) is kept secure. Discuss physical protection, electronic protection, and positional protection strategies for the office and the value of each.

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Find velocity distribution in the film

find a) velocity distribution in the film b) shear stress distribution c) volumetric rate of flow d) average velocity. assume the flow is steady and laminar.

  Determine the final temperature

determine the final temperature °R, and the final pressure in lbf/in^2. Rair = 53.33 ft·lbf/lb·°R. Assume ideal gas behavior and solve problem using.

  Discharge pressure of the compressor

What is the discharge revised discharge pressure of the compressor.

  Find the needed length of the heated section

Find the needed length of the heated section of the tube and find the temperature of the water when it exits the heated section of the tube.

  What is the rate of heat loss to the ambient

The external heat transfer coefficient is h=10 W/m^2*K. What is the rate of heat loss to the ambient?

  Determine the mass of vapor present at the initial and final

locate the initial and final states on a sketch of the T-v digram. determine the mass of vapor present at the initial and final state, each in kg.

  Determine the minimum time needed for the plate temperature

determine the minimum time needed for the plate temperature to reach 140°C.

  What magnetic field should be applied to trap electrons

In a DC planar magnetron sputtering system at 1000 V, the cathodeanode spacing is 10 cm. What magnetic field should be applied to trap electrons within 0.5 cm of the target?

  Determine the angular velocity and angular acceleration

Block B of the mechanism is confined to move within the slot member CD. If AB is rotating at a constant rate of AB = 3rad/s, determine the angular velocity and angular acceleration of member CD at the instant shown.

  How much ideal effort force is required to travel up ramp

If a person and a wheelchair have a mombined weight of 185 lb how much ideal effort force is required to travel up the ramp? Can you just explain to me what equation I need for this?

  Find the rate of change of the density in the tire

Air at 250 kPA and 15C is being forced into a tire, which has a volume of 0.5m^3, at a velocity of 60 m/s through a 6 mm opening. Find the rate of change of the density in the tire.

  What is the actual mechanical advantage of the system

what is the actual mechanical advantage of the system?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd