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Uniform Flow:

If the fluid properties like density, velocity and pressure, etc. do not change throughout the fluid flow, then this type of flow is called uniform form.

Mathematically, it can be written as-

V ⃗ = V (t)

P = P (t)

ρ= ρ (t)

Or,

[∂V/∂s]t= constant     =    0

[∂P/∂s]t= constant    =    0

[∂ρ/∂s]t= constant    =    0

Non-Uniform Flow:

If the fluid properties like density, velocity and pressure, etc. change throughout the fluid flow, then this type of flow is called non-uniform form.

Mathematically, it can be written as-

[∂V/∂s]t= constant     ≠    0

[∂P/∂s]t= constant    ≠    0

[∂ρ/∂s]t= constant    ≠    0