MechasFluid
FLOW CONNECTING 2 RESERVOIRS
Thursday, 28 May 2015 | 00:01 | 0 comment(s)
FLOW WHICH CONNECTING 2 RESERVOIRS
FIGURE 01
EXAMPLES :
The pipe diameter is 100mm and has length 15m and feeds directly into the atmosphere at point C 4m
below the surface of the reservoir (i.e. za – zc = 4.0m). The highest point on the pipe is a B which is 1.5m above the surface of the reservoir (i.e. zb – za = 1.5m) and 5 m along the pipe measured from the reservoir. Assume the entrance and exit to the pipe to be sharp and the value of friction factor f to be 0.08.
Calculate
a) velocity of water leaving the pipe at point C,
b) pressure in the pipe at point B.
SOLUTION
a) We use the Bernoulli equation with appropriate losses from point A to C and for entry loss kL = 0.5 and exit loss kL = 1.0.
For the local losses from Table 2 for a sharp entry kL = 0.5 and for the sharp exit as it opens in to the
atmosphere with no contraction there are no losses, so
Friction losses are given by the Darcy equation
Pressure at A and C are both atmospheric, uA is very small so can be set to zero, giving
Substitute in the numbers from the question
b) To find the pressure at B apply Bernoulli from point A to B using the velocity calculated above. The length of the pipe is L1 = 5m:
That is 28.58 kN/m2 below atmospheric.
by : AmiraHaris
CONCLUSION
Piping systems are documented in piping and instrumentation diagrams (P&IDs). If necessary, pipes can be cleaned by the tube cleaning process. Within industry, piping is a system of pipes used to convey fluids (liquids and gases) from one location to another. The engineering discipline of piping design studies the efficient transport of fluid.
"Piping" sometimes refers to Piping Design, the detailed specification of the physical piping layout within a process plant or commercial building. In earlier days, this was sometimes called Drafting, Technical drawing, Engineering Drawing, and Design but is today commonly performed by Designers who have learned to use automated Computer Aided Drawing / Computer Aided Design (CAD) software.
Plumbing is a piping system with which most people are familiar, as it constitutes the form of fluid transportation that is used to provide potable water and fuels to their homes and businesses. Plumbing pipes also remove waste in the form of sewage, and allow venting of sewage gases to the outdoors. Fire sprinkler systems also use piping, and may transport nonpotable or potable water, or other fire-suppression fluids.
Piping also has many other industrial applications, which are crucial for moving raw and semi-processed fluids for refining into more useful products. Some of the more exotic materials of construction are Inconel, titanium, chrome-moly and various other steel alloys.
REFERENCES
-Çengel, A. Yusof. Cimbala, M. John (2014). Fluid Mechanics. Singapore: Mc Graw Hill Education
-Douglas J. F. 2005. Fluid Mechanics. Pearson 5th Edition.
-Sturm T. W. 2001. Open Channel Hydraulics; McGraw-Hill. UK.
-Jain S. C. 2001. Open Channel Flow. John Wiley & Sons.
-Chin D.A. 2000. Water Resources Engineering. Prentice Hall.
-Subramanya K., 1997. Flow in Open Channels. Tata McGraw-Hill, New Delhi.
-Fluid Mechanics Module, Penerbit UTHM, Noor Aliza Ahmad, Roslinda Seswoya & Zarina Md Al
-(2009, Nov). Fluid Mechanics. Retrieved from http://en.wikipedia.org/wiki/Fluid_mechanics
-(2015,May). Pipe network analysis. Retrieved from http://en.wikipedia.org/wiki/Pipe_network_analysis
-(2011, June). Branching pipe. Retrieved from http://www.unimasr.net/
-(2010, August). Pipe in series and parallel. Retrieved from http://nptel.ac.in/courses/112104118/lecture-36/36-1_flow_through_branched_pipe.htm
GROUP MEMBERS
