Identify the incorrect statement about radial flow Which of the following statements is NOT correct for radial flow fields (e.g., flow toward or away from a centerline)?

Introduction / Context:
Radial flow occurs in pumps, wells, and around bluff bodies. It differs from rectilinear flow because streamlines converge toward or diverge from a point/axis, altering geometry and kinematics.

Given Data / Assumptions:

• Axisymmetric, inviscid-style reasoning for basic identification.
• Flow direction is predominantly radial.

Concept / Approach:
In radial flow, streamlines are not parallel; they either converge or diverge, causing pressure and velocity to vary with radius. Thus, any statement implying “streamlines parallel” is inconsistent with the very definition of radial motion.

Step-by-Step Solution:

Verification / Alternative check:
Potential-flow solution for a source/sink has V_r ∝ 1/r and streamlines radiating from/into the origin; clearly not parallel.

Why Other Options Are Wrong:
Options (a)–(c) accurately describe radial flow behavior.

Common Pitfalls:
Confusing “one-dimensional” with “parallel streamlines”; even simplified 1-D radial models do not imply parallel lines.

Final Answer:
Flow is one-dimensional with streamlines parallel