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)?

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Solve this multiple-choice question and choose the correct option.

Accepted Answer

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: Check (a): variation with radius r is expected → correct.Check (b): direction predominantly radial → correct.Check (c): both inward and outward patterns exist → correct.Check (d): “streamlines parallel” contradicts radial geometry → incorrect statement. 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

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)?

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