Impact of Jet

2H5

IMPACT OF JET

INTRODUCTION

Mechanical work usher out be produced by apply pressure of moving fluid at lavishly velocity. As
an example jet of water from a nozzle gage produce crash when it strikes a plane flat
surface or scale of measurement. This type of force back can produce power to recall a system such as
hydropower turbine. The force exerted onto the plate bequeath depend on the density of fluid,
discharge and jet velocity. The force is also depends on whether the plate is at moving
or stationary condition.

Theoretically, the force of water jet striking on a static plate can be calculated development the
following equation:

F ? ?Qv (1 ? cos ? )

(2H5-1)

where v is a velocity of jet as it strikes the plate and ? is the deflection fee as shown in
Figure 2H5-1. The jet velocity v can be calculated using the equation given under:

v ? u ² ? 2gs

(2H5-2)

where,
u = velocity of water at the pipe nozzle =

Q
A

Q = Discharge
A = cross section celestial orbit of the nozzle

©copyright 2008 Faculty of Civil Engineering UTM

In this look into, two type of plates will be tested: flat plate and hemispherical plate.





i)

For a flat plate, ? = 90o, and according to Equation (2H5-1), the force exerted
on the plate can be calculated as,

F ? ?Qv

ii)

(2H5-3)

For a hemispherical plate, ? = 180o, and according to Equation (2H5-1), the
force exerted on the plate can be calculated as,

F ? 2 ?Qv

(2H5-4)

FIGURE 2H5-1

©copyright 2008 Faculty of Civil Engineering UTM

OBJECTIVES

The objectives of the experiment are:

a)

To measure the magnitude of force exerted on:
i.
ii.

b)

horizontal plate.
Hemispherical plate.

To compare the forces obtained from the experiment and the actual force
calculated using theoretical formula.

APPARATUS
1.

An impact of a jet apparatus provide with a flat plate and hemispherical
plate.

2.

A stop watch

3.

Weights

experimental PROCEDURES

1.

Record the pipe nozzle diameter, d (m)....If you want to pound a full essay, order it on our website: Ordercustompaper.com



If you want to get a full essay, wisit our page: write my paper