Answered: Newton fluid having a density of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Newton fluid having a density of Viscosity and a viscosity of μ flows in a cylindrical tube having a diameter of D and a length of L by a pressure difference of >0. Assuming that the cylinder is horizontal with steady state, full development flow, based on momentum and mechanical energy balance equations,
(1) Indicate the friction for the pressure difference.
(2) Indicate the friction against the shear stress on the inner wall of the tube.
(3) Write an expression defining the coefficient of friction and indicate the pressure difference.

2.지름이 D이고 길이가 L인 원통형 관내를 밀도 p, 점도 μ의 뉴튼 유체가 관내 압력차 Ap,
(>0)에 의해 흐르고 있다. 정상상태, 완전발달흐름이고 원통관이 수평으로 놓여있다고 가정할
때, 운동량 수지식과 기계적 에너지 수지식에 근거하여
(1) 마찰 h,를 압력차 △p,에 대해 나타내시오.
(2) 마찰 h를 관 내벽에서의 전단응력 T에 대해 나타내시오.
(3) 마찰계수 f를 정의하는 식을 쓰고 f를 압력차 스p,에 대해 나타내시오.
m3, V,-B,Va)=PS.-p,S,+F„+F,
Pa
+gZ,+a
V
V
+gZ, +a
2
2

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