FLUID DYNAMICS

Greetings :)

My name is Tharshinie A/P Morty from class DEM2S1 Politeknik Sultan Mizan Zainal Abidin. As i know thermofluids is one of hardest subject in my semester .I have been chosen to do a discussion. The task is about fluid dynamics. This task should handed by Mr.Roshaizul Nizam bin Sani.

First and foremost, I am going to tell about Energy of  a flowing fluid
A liquid may possess three forms of energy: 1. Potential energy
                                                                        2. Pressure energy
                                                                        3. Kinetic energy
1. Potential energy
    If a liquid of weight W is at a height of z above datum line
                                              ➪Potential energy = Wz
    Potential per unit weight = z
    The potential energy per unit weight has dimensions of Nm/N and is measured as a length or head
    z and can be called the Potential energy.


2.Pressure energy
   When a fluid flows in a continuos stream under pressure it can do work. If the area of cross-section     of the stream of fluid is a, then force due to pressure р on cross-section is pa. 
             

Similarly, the pressure energy per unit weight p/W is equivalent to a head and is referred to as the pressure head.

3.Kinetic energy

If a weight W of liquid has a velocity v,

The kinetic energy per weight is also measured as a length and referred to as the velocity head. 

The total energy of the liquid is the sum of these three forms of energy.