INTRODUCTION

Assalamualaikum and Salam 1 Malaysia. We are students from Universiti Tun Hussein Onn Malaysia (UTHM). This blog has been created to fulfill our group's assignment for subject Fluid Mechanics code BFC10403 year 2015. We were taught by Dr Siti Nazahiyah Binti Rahmat. Topic given is Basic Equations in Fluid Mechanics. Hope this will help you! :)

Group Members (Group 8)

NUR AMANINA BINTI ABDUL RAZAK

AF140048

14 AUGUST 1995

KUALA LUMPUR

princess_nuramanina@yahoo.com.my

PROFESSIONAL ENGINEER AND LECTURER TO BE

NUR SYAFIQAH BINTI MOHD ZAKI

AF140081

14 DECEMBER 1995

SELANGOR
nursyafiqahzaki@gmail.com
ENGINEER TO BE

NURUL FARZANA BINTI SHAFAWI
27 OCTOBER 1995
KULIM, KEDAH
annashafawi271095@gmail.com
ENVIRONMENTAL CONSULTANT TO BE

NORATIQAH BINTI NORAZHAR
7 AUGUST 1995
MERSING, JOHOR
noratiqah.norazhar95@gmail.com
ENGINEER TO BE

NUR IZZATUL AISYAH BINTI BADRULZAMAN
3 JUNE 1995
JOHOR BHARU
izzatul27@gmail.com

Introduction

Flow often :

• Ideal fluid 
• No viscosity
• Incompressible 
• Not exist (to consider what will happen to an ideal fluid in a particular fluid flow problem in order to simplify the problem)

Real fluid : 

• Effects of viscosity

Type of flow :

• Incompressible fluid - energy per mass, energy per volume, energy per weight 
• Steady
• Uniform
• Path line
• Stream line
• Flowrate - volume flow rate (discharge), mass flow rate, weight flow rate

Equation :

• Continuity
• Bernoulli
• Euler
• Toricelli

Question 1 (Equation of Continuity)

Oil flows throw a pipe of radius, R with speed, V. some distance down the pipeline, the pipe narrow as to half its original radius. What is the speed of the oil in the narrow region of pipe?

Question 2 (Application of Bernoulli Equation)

                                                   

A pressurized tank of water has a 10 cm diameter orifice at the bottom, where water discharges to the atmosphere. The water level is 10.5 m above the outlet. The tank air pressure above the water level is 350 k Pa (absolute) while the atmospheric pressure is 100 k Pa. Neglecting frictional effects, determine the initial discharges rate of water from the tank.

                                     By using bernoulli equation:-

Question 3 (Application of Momentum Equations)

A water jet srikes on a vane at 60^o. If water flows and velocity are 2 kg/s and 24.4 m/s respectively. 

ρ = 1000 kg/m^{3                                    SG = 1                                        Q = 2 kg/s}

d = 2.4 m                                     β  = 60^o

v1 = 24.4 m/s                              v2 = 24.4 m/s                                                

p1 = 200 kPa                              p2 = 200 kPa

                                           

Calculate :

a) Resultant force at stationary vane

b) Resultant force at vane if the vane moving at velocity 8.9 m/s in jet direction

          

Direction x ;

Direction y ;

                  

                                     

                                                      

Conclusion

• The equations that we learn can be used to calculate the rate of flow, Q, head loss for wall and pipe friction.
• The bernoulli equation used to calculate the value of velocity in the pipe.
• Understand that the continuity equation come from the equation V = Q/A.
• We also know how to use the momentum equation in related questions.
• Know how to calculate the resultant force at stationary and moving vane by resolve at x and y axis.
• Understand more about the concepts of basic equation in fluid mechanics.

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