Can you explain this answer? tests, examples and also practice Civil Engineering (CE) tests.The characteristics of laminar and turbulent flow are very different. In such a case, Darcy-Weisbach friction factor willa)remain unchangedb)be halvedc)be doubledd)increase fourfoldCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you anĪmple number of questions to practice For laminar flow in a pipe carrying a given discharge, the height of surface roughness is doubled.
Can you explain this answer? has been provided alongside types of For laminar flow in a pipe carrying a given discharge, the height of surface roughness is doubled. Can you explain this answer?, a detailed solution for For laminar flow in a pipe carrying a given discharge, the height of surface roughness is doubled. Besides giving the explanation ofįor laminar flow in a pipe carrying a given discharge, the height of surface roughness is doubled. Can you explain this answer? defined & explained in the simplest way possible. Here you can find the meaning of For laminar flow in a pipe carrying a given discharge, the height of surface roughness is doubled. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2023 Exam.įind important definitions, questions, meanings, examples, exercises and tests below for For laminar flow in a pipe carrying a given discharge, the height of surface roughness is doubled. Information about For laminar flow in a pipe carrying a given discharge, the height of surface roughness is doubled. The Civil Engineering (CE) exam syllabus. The Question and answers have been prepared Can you explain this answer? for Civil Engineering (CE) 2023 is part of Civil Engineering (CE) preparation. the Darcy-Weisbach friction factor will remain unchanged.įor laminar flow in a pipe carrying a given discharge, the height of surface roughness is doubled. Hence, the answer to the given question is option 'A', i.e. Therefore, substituting the value of Reynolds number in the equation for Darcy-Weisbach friction factor, we get,Īs we can see, the Darcy-Weisbach friction factor is independent of the height of surface roughness or relative roughness.
Since the flow is laminar, Reynolds number is given by, In laminar flow, the Darcy-Weisbach friction factor is given by,
However, this increase in relative roughness does not affect the laminar flow regime in the pipe. When the height of surface roughness is doubled, it means the relative roughness (e/D) of the pipe also doubles, where e = height of surface roughness. Where, hf = frictional head loss, f = Darcy-Weisbach friction factor, L = length of pipe, D = diameter of pipe, V = velocity of fluid, and g = acceleration due to gravity. Darcy-Weisbach equation for calculating frictional head loss in a pipe is given by,
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