Question

A flow field which has only convective acceleration is

• A. a steady uniform flow
• B. an unsteady uniform flow
• C. a steady non uniform flow
• D. an unsteady non-uniform flow

Answer 1

The correct option is C a steady non uniform flow

Total acceleration,
$\frac{\Delta \overrightarrow{V}}{\Delta t}=\frac{\partial V}{\partial t}+V.\nabla V$

$V.\nabla V\to Convectiveacceleration$

$\frac{\partial V}{\partial t}\to Localacceleration$

In steady non-uniform flow, conditions change from point to point in the stream but do not change with time.