Download presentation

Presentation is loading. Please wait.

Published byMekhi Gales Modified over 2 years ago

1
**Pharos University ME 259 Fluid Mechanics for Electrical Students Revision for Mid-Term Exam**

Dr. A. Shibl

2
**Manometer Example Solution:**

Determine the pressure at point A in the figure below if h1 = 0.2 m and h2 = 0.3 m. Use water = 1000 kg/m3. Solution: P2 = P1 + Hggh2 But P1 = Patm (open to atmosphere) ==>P1 = 0 (gauge) P2 = Hggh2 P3 = PA + waterg(h1+h2) We know that P2 = P3 (same horizontal level) Thus Hggh2 = PA + waterg(h1+h2) PA = Hggh2 - waterg(h1+h2) PA = 13.54x1000x9.81x0.3 – 1000x9.81x( ) PA = 39, PA = 34.9 kPa (gauge) Points to be selected: 1 – at the open end of the manometer 2 – at the right leg of the manometer 3 – same level with point 2 but at left leg of the manometer 4 – same level as point A Pressure at the points: P1=Patm P2 = P3 P4 = PA

3
Static Force Example A rectangular gate of dimension 1 m by 4 m is held in place by a stop block at B. This block exerts a horizontal force of 40 kN and a vertical force of 0 kN. The gate is pin-connected at A, and the weight of the gate is 2 kN. Find the depth h of the water.

5
Continuity Example Water flows steadily through a nozzle. The nozzle diameter at the inlet is 5 cm, and the diameter at the exit is 3cm. The average velocity at the inlet is 4 m/s. What is the average velocity at the exit? V1 A1 = V2 A2

6
Bernoulli Equation

7
Water moving through Venture nozzle reaches a low pressure at section 1. Nozzle dimensions are d1 = 3 mm, d2 = 9 mm, and h = 150 mm. Determine the minimum possible water speed (V2) at the exit of the nozzle so that fluid will be drawn up the suction tube.

8
**Momentum Equation For Steady Flow ΣFx= ṁ (V2—V1)x**

9
A water jet with a velocity of 30 m/s impacts on a splitter plate so that 1/4 of the water is deflected toward the bottom and 3/4 toward the top. The angle of the plate is 45o. Find the force required to hold the plate stationary. Neglect the weight of the plate and water, and neglect friction.

Similar presentations

Presentation is loading. Please wait....

OK

Momentum Equation and its Applications

Momentum Equation and its Applications

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on art and craft movement era Performance related pay ppt online Ppt on ms access query Ppt on drinking water problems in rural areas Ppt on earthquake download Powerpoint ppt on patient safety goals Ppt on beer lambert law example Ppt on capital markets in india Ppt on computer languages html Ppt on mammals and egg laying animals for kids