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MET212-Assignment 2

Fluid Mechanics Assignment

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MET212-Assignment 2

  1. 1. Assignment 2 assignment2-180807140018 Page 1 of 2 MET212-Fluid Mechanics & Machines 2nd Semester, March 8, 2012 Assignment # 2 Name…… ……… ……… …… ………… I.D No.…….… ……… Due date: March 13,2012 for Tue class and March 14, 2012 for Wed class (Submit as an individual work in a separate paper including this page as a cover page and keep your copy) 1. A rectangular gate is located at the end of a rectangular way with 3-m-wide and 8-m-high which is connected to a huge open reservoir overflowing with water as shown in Figure. The door is hinged at its base and held closed by a straight force, F R , located at the center of the gate. The maximum value for F R is 4000 kN. (a) Determine the maximum water depth, h, (b) Determine the moment that would apply to the gate. 2. A double U-tube manometer is connected to a pipe as shown in Figure. Taking the dimensions and fluids as indicated; calculate the absolute pressure at point at A (centre of the pipe). Take Patm 101325 Pa and the ρHg as 13600 kg/m3 . 10
  2. 2. Assignment 2 assignment2-180807140018 Page 2 of 2 3. A manometer is used to measure the pressure in a tank. The fluid has a SG of 0.85, and the manometer column height is 55 cm, as shown in Figure. If the local atmospheric pressure is 96 kPa, determine the value of h1. Note: consider the pressure as absolute pressure. 4. An inverted U-tube manometer connects pipes A and B as shown in Figure 3. The manometer fluid is oil of density 900 kg/m3 ; pipes A and B contain water. Calculate pressure difference between A and B where pA and pB are the pressures at the pipe centres, as shown.