Fluid Mechanics HWR 301 Instructor Name Professor Ahmed

Fluid Mechanics HWR 301

�Instructor Name: Professor Ahmed Samy Kamis �Assistant Name : Sami Alsolami �Lecture Time : S. M 9: 00 – 9: 50 �Marks Distribution: - Attendance : 5% Homework : 25% 2 Midterm Exams : 15% each Final Exam : 40%

�Web Site : www. kau. edu. sa/akamis �Office Hours : Sunday 9: 00 – 11: 00 Tuesday 1: 00 – 2: 00

Fluid Mechanics �A fluid is a nonsolid state of matter in which the atoms or molecules are free to move past each other, as in a gas or a liquid. �It is the science that deals with the properties of fluids. �It also deals with laws that govern the motion of fluids.

Contents �Units and dimensions �Fluid physical properties �Fluid Statics �Fluid dynamics �Dimensional analysis �Flow in closed conduits

1. Units & Dimensions �Units are essential to understand the quantity describing a certain fluid property. �i. e. velocity = 60 ? ? ? Without units the number has no meaning !!! �Two common systems of units are practiced. �English and SI units.

SI & English Units Quantity SI English Dimension Length Meter, m Foot, ft L Mass Kilogram, kg Bound, lb M Time Second, s T Velocity m/s ft/s L/T Acceleration m/s 2 Ft/s 2 L/T 2 Force Kg m/s 2 = N Pressure N/m 2 = Pascal Poundal/m 2 M/LT 2 Density Kg/m 3 lb/ft 3 M/L 3 Specific Weight N/m 3 Poundal/ft 3 M/L 2 T 2 Viscosity N s/m 2 Poundal s/ft 2 M/LT Surface Tension N/m Poundal/ft M/T 2 lb ft/s 2 = poundal M L /T 2