GATE ME 2014 Set 3 — Question 24
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Fluid Mechanics → Viscous & Pipe Flow → Turbulent Flow
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Question
Consider the turbulent flow of a fluid through a circular pipe of diameter, . Identify the correct pair of statements.I. The fluid is well-mixed
II. The fluid is unmixed
III.
IV.
II. The fluid is unmixed
III.
IV.
Correct answer
(D) I, IV
Solution
Turbulent flow is characterized by random, chaotic fluid motion which leads to high rates of mixing (well-mixed). For flow in a circular pipe, the transition from laminar to turbulent flow typically occurs at a critical Reynolds number . Flow is considered turbulent when . Thus, statements I and IV are correct.
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