My Exam Notes
  • Home
  • CURRENT AFFAIRS
  • GENERAL AWARENESS
    • Child Category 1
  • BIHAR PSC
  • Home
  • CURRENT AFFAIRS
  • GENERAL AWARENESS
  • BIHAR GK
  • RAJASTHAN GK
  • MECHANICAL NOTES

Thursday, December 24, 2015

ENERGY LOSS IN PIPES, Darcy- weicbach formula, Chezy's formula, minor losses in pipe

 My Exam Notes     5:24 AM     FLUID MECHANICS     1 comment   



MECHANICAL TIPS AND STUDY MATERIAL


ENERGY LOSS IN PIPES

When ever there is flow of fluid in pipes there will be resistance which add to energy loss. For our study, we have classified the losses in two section, these are
  • Major losses in pipe
  • Minor losses in pipe
Major losses are mostly due to friction which is basically experienced by 
  • Surface of pipe and layer of fluid flowing over it.
  • Subsequent layer of fluids creating resistance to neighboring layer.
It can be calculated by Darcy - weisbach formula and Chezy's formula.



Darcy - weisbach formulaDarcy - weisbach formula
Where,
hf = head loss
L = length of pipe
d = diameter of pipe
f = coefficient of friction
V = mean velocity of flow

Chezy's formula.Chezy's formula
Where,
hf = loss of head due to friction
P = perimeter of pipe
A = area of cross section of pipe
L = length of pipe
V = mean velocity of flow


Minor losses in energy can arise from several factors. Some of them are as under.

  • Any obstruction in pipe
  • Bending in pipe
  • Unanticipated contraction
  • Unexpected expansion
  • Fittings etc in pipe
Also losses occurs at entrance and exit of pipes which are unavoidable. All such losses accounts for loss of head of fluid in pipe. These are minor losses as compared to frictional loss which can be neglected for long pipes but are taken into account when we deal with short pipes.

Loss of head due to sudden enlargement and contraction

Consider a pipe of diameter D1 (smaller) with sudden enlargement having diameter D2 (larger). The liquid moving from smaller to larger diameter pipe experiences sudden change in boundry an is not able to follow the abrupt change in boundary resulting into formation of turbulence or eddies. This adds to the loss of head in the pipe.


When fluid is flowing in larger diameter pipe and suddenly experiences change in diameter (reduced diameter of flow), the flow goes on decreasing upto section C - C and then suddenly increases causing loss of head. Then section C - C is also known as vena-contracta.




  • Share This:  
  •  Facebook
  •  Twitter
  •  Google+
  •  Stumble
  •  Digg
Email ThisBlogThis!Share to TwitterShare to Facebook
Newer Post Older Post Home

1 comment:

  1. oshwinJanuary 21, 2021 at 10:17 PM

    Nice reading, I love your content. This is really a fantastic and informative post. Keep it up and if you are looking for Super Duplex Pipe suppliers then visit Oshwin Overseas.

    ReplyDelete
    Replies
      Reply
Add comment
Load more...

MY TRAVEL VLOG-Being Tourist

Popular Posts

  • Environment Current Affairs 2019 PDF download | Important Questions |
    Watch video on EXAM FOCUS YOUTUBE CHANNEL. Which city of china in only one with all electric taxis? Taiyuan Shenzhen Jingia...
  • TURBOMACHINES
                    TURBOMACHINE DEFINATIONAND  EXPLANATION A turbo-machine is a device in which energy transfer takes place between ro...
  • ENERGY LOSS IN PIPES, Darcy- weicbach formula, Chezy's formula, minor losses in pipe
    MECHANICAL TIPS AND STUDY MATERIAL When ever there is flow of fluid in pipes there will be resistance which add to energy loss. For our stud...
  • #MOST IMPORTANT AUGUST CURRENT AFFAIRS 2018 #PDF link #NOTES #अगस्त करें...
    PDF IS BELOW NOTES - Go Down Notes of August Current Affairs- Navlekha a new platform launched by Google .Google has announced pr...
  • METAL INERT GAS WELDING AND TUNGSTEN INERT GAS WELDING
            TUNGSTEN INERT GAS WELDING (TIG) CHARACTERISTICS IN  BRIEF It is known as GAS TUNGSTEN ARC WELDING (GTAW). Also called Argon arc wel...
  • MAY (1-15th) CURRENT AFFAIRS 2019 | MCQ's | EXPLAINED | FREE PDF |
    PDF WILL BE UPLOADED ON 24/05/2019 The newly elected prime minister of Israel is? Benjamin Netanyahu What is the theme of Internati...
  • #SPACE CURRENT AFFAIRS last 6 months #स्पेस/अंतरिक्ष विज्ञान करेंट अफेयर...
    Indian national committee for space research was established in the year 1962 Indian Space Research Organisation was founded in year 19...
  • BANKING CURRENT AFFAIRS | MD, CEO, CHAIRMAN Of BANKS (UPDATED 2019)| MCQ's | static gk
    This POST is on Banking Awareness 2019 with all important National Banks and its MD/CEO/CHAIRMAN with important points to remember for all...
  • SINGLE PLATE CLUTCH,CONE CLUTCH AND CENTRIFUGAL CLUTCH
                   SINGLE PLATE CLUTCH DESCRIPTION  In the general arrangement it consists of a disc which has frictional material on both its s...
  • CASING OF CENTRIFUGAL PUMP, ITS TYPES AND PRIMING OF TURBINES
    MECHANICAL TIPS AND STUDY MATERIAL CASING OF CENTRIFUGAL PUMP As we know casing surrounds the impeller and guides the water and also raises ...

Categories

AUTOMOBILE BASICS BHIHAR PSC BIHAR PSC biology quiz CURRENT AFFAIRS economics FASTEST MACHINES FLUID MECHANICS GEARS GENERAL AWARENESS HEAT AND MASS TRANSFER I C ENGINE JET ENGINES JOB OPENING IN USA MACHINING PROCESSES MANUFACTURING PROCESS MATERIAL SCIENCE mechanical engineering MECHANICAL JOB VACANCY IN INDIA MECHANICAL VIBRATION MISSILES POLITY QUIZ POWER PLANT ENGINEERING RAJASTHAN GK sports STRENGTH OF MATERIAL THERMODYNAMICS TOP COLLEGES TOP SPEED TURBINES WELDING

Pages

  • QUIZ

Featured post

SCIENCE & TECHNOLOGY CURRENT AFFAIRS 2018 (JANUARY - JUNE)विज्ञान प्रौद्...

CBSE (Central Board of indirect taxes) launched which app to check person collecting GST? GST verify National science day was celebrate...

ad code

Copyright © My Exam Notes | Powered by Blogger
Design by Hardeep Asrani | Blogger Theme by NewBloggerThemes.com | Distributed By blogger Templates