CIVL 151_Tutotial 3

# CIVL 151_Tutotial 3 - Tutorial3 Tutorial 3 31,March,2009 Problem1 oil,spgr=0.83,forV0 =20 m/s Problem1 1. 2.Pressureisthesame everywhere

This preview shows pages 1–7. Sign up to view the full content.

CIVL 151 Fluid mechanics torial 3 Tutorial 3 31, March, 2009

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Problem 1 What force F is required to hold the plate from flowing oil, sp gr = 0.83, for V 0 = 20 m/s ?
Problem 1 1. Establish the control volume; 2. Pressure is the same M 1 everywhere; 3. The equation of motion is: M 4. Therefore: = 0 FM M 0 M Q V = (. ) ( ) 0 2 1 0 8 1000 dV V ρ π == = ×× × 4 628 N = M 2

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Problem 2 If 600 L/s of water flows through an 50 cm diameter pipeline that contains a horizontal 90 o bend and the pressure at the entrance to the bend is 140 kPa, determine the force components, parallel and normal to the approach velocity, required to hold the bend in place. lt l Neglect losses.
Problem 2 1. Establish the control volume; 2. Mass conservation : Q =constant, 2 /( ) . 2 12 1 3 057 m/s VVQ d π == = 3. Energy equation: d h γγ ++ = 22 11 p Vp V zz gg 4 Since z 1 = z 2 and V 1 = V 2 , we have p 1 = p 2 4. The equation of motion : F p1 F M . Find the magnitudes of these terms: M 1 F x F px FF =− py M 5. Find the magnitudes of these terms: y . 3 06m/ s 140 kPa Qp p = () ( / . 32 140 10 4 0 5 )=27475 N p Fp A = × e me way erefore nd .. 1000 0 6 3 057=1834.2 N MQ V ρ = × 29309.2 N xp FM F = += 9309 2 N The same way,

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 04/18/2009 for the course CE 309 taught by Professor Lee during the Spring '07 term at USC.

### Page1 / 7

CIVL 151_Tutotial 3 - Tutorial3 Tutorial 3 31,March,2009 Problem1 oil,spgr=0.83,forV0 =20 m/s Problem1 1. 2.Pressureisthesame everywhere

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online