CONCEPT OF FLOW

1. ONE DIMENSIONAL

1.1. Expressed as functions of time and one space coordinate only

1.2. The single space coordinate usually the distance measured along the centre-line

2. TWO DIMENSIONAL

2.1. Function of time and two space coordinates

2.2. Same streamline patterns are found in all planes perpendicular to Z direction at any instant

3. THREE DIMENSIONAL

3.1. The hydrodynamic parameters are functions of three space coordinates & time

4. COMPRESSIBLE

4.1. Can be compressed

4.2. Volume can be reduced

4.3. Density can be charged

4.4. Value of Mach number should be greater than 0.3

5. INCOMPRESSIBLE

5.1. Cannot be compressed

5.2. Volume cannot be reduced

5.3. Density cannot be charged

5.4. Value of Mach number should be less than 0.3