Question

In a flow, locus of particles which have earlier passed through a prescribed point is called _

• A. Streakline
• B. Timeline
• C. Pathline
• D. Streamline

Answer 1

Answer:

A. Streakline

Streakline is the locus of points of fluid particles that have passed through a specific point in the past. Streamlines are curves that show the direction of a fluid element at any given time. Pathlines are trajectories of individual fluid particles. For steady flow, all three coincide. Fluid particles cannot cross streamlines. Streamlines converge when accelerated and diverge when retarded.