632 words - 3 pages

Pipe Bends and Thrust Block Forces

-------------------------------------------------

Pipe bends and thrust blocks forces on anchors due to fluid velocity and internal pressure - online resulting force calculator

Sponsored Links

Online Pipe Bend Resulting Force Calculator

The calculator below can used to calculate resulting force in piping bends:

-------------------------------------------------

Top of FormMetricρ - density of fluid (kg/m3)d - int. diam. pipe or bend (m)v - velocity of fluid (m/s)β - turning angle of bend (o)p - gauge pressure (kPa)Bottom of Form | -------------------------------------------------

Top of FormImperial SG - specific gravity of fluid d - int. diam. pipe or bend (inches)v - velocity of fluid (ft/s)β - turning angle of bend (o)p - gauge pressure (psi)Bottom of Form |

The resulting force on a thrust block or anchor depends on the fluid mass flow ...view middle of the document...

114 m

* water with density 1000 kg/m3

* flow velocity 20 m/s

can be calculated by as

Resulting force in x-direction:

Rx = (1000 kg/m3) π ((0.114 m) / 2)2 (20 m/s)2 (1 - cos45)

= 1196 (N)

Resulting force in y-direction:

Ry = (1000 kg/m3) π ((0.114 m) / 2)2 (20 m/s)2 sin45

= 2887 (N)

Resulting force on the bend

R = ((1196 N)2 + (2887 N)2)1/2

= 3125 (N)

Note - if β is 90o the resulting forces in x- and y-directions are the same.

Resulting force due to Static Pressure

The pressure and the end surfaces of the bend creates resulting forces in x- and y-directions.

The resulting force in x-direction can be expressed as

Rpx = p A (1- cos β) (4)

= p π (d / 2)2 (1- cos β) (4b)

where

Rpx = resulting force due to pressure in x-direction (N)

p = gauge pressure inside pipe (Pa, N/m2)

The resulting force in y-direction can be expressed as

Rpy = p π (d / 2)2 sinβ (5)

where

Rpy = resulting force due to pressure in y-direction (N)

The resulting force on the bend due to force in x- and y-direction can be expressed as:

Rp = (Rpx2 + Rpy2)1/2 (6)

where

Rp = resulting force on the bend due to static pressure (N)

Example - Resulting force on a bend due to pressure

The resulting force on a 45o bend with

* diameter 114 mm = 0.114 m

* pressure 100 kPa

can be calculated by as

Resulting force in x-direction:

Rx = (100 kPa) π ((0.114 m) / 2)2 (1 - cos45)

= 299 (N)

Resulting force in y-direction:

Ry = (100 kPa) π ((0.114 m) / 2)2 sin45

= 722 (N)

Resulting force on the bend

R = ((299 N)2 + (722 N)2)1/2

= 781 (N)

Find the perfect research document on any subject