University:
North Idaho College
Course:
PHYS-211 | Engineering Physics I
Academic year:

2023
Views:

262

Pages:

3
Author:

Hani T.

Conservation of Energy. There are Twee forms of Non Tho/med energy sor a fluid ad any given pariNA The Kinetic energy due to the mobon of Fluid -The Potential Energy due to the Potential elevation aboup a datum The pressure Energy due to the absolute pressure of the fluid at that point. Conservation of Energy necessitates that the Total Energy of the Shid Romains. Constant, however there lan be transformation form on Form to and the If all energy terms are written in the form of head (Potential Energy) P Py represents the pressure head (flow work) V^2 2g represents the velocity head (Kinetic energy) The energy Conservation, thus, implies that Between any two points in a fluid [P/pg + V^2/2g + Z]_1 = [P/pg + V^2/2g + Z]_2 This equation is known as the Bernoulli equation and is valid if the two points of interest 1 & 2 are very close to each other. and there is No Loss of Energy. In Real Situation, the flow will Suffer a Loss of energy due to Friction and obstruction Between Stations 1 & 2, hence [P/pg + v^2/2g + Z]_1 = [P/pg + v^2/2g + Z]_2 + hl where hl is the loss of energy Between the two Stations. When the flow Between stations 1 & 2 is Caused by a pump situated between the two Stations the energy equation becomes [P/pg + v^2/2g + Z]_1 + hp = [P/pg + v^2/2g + Z]_2 + hl