Instructor: Harlan Bengtson
Credit Hours: 3.00

Approval Number:


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Course Description


There are numerous equations that can be used to make natural gas pipeline flow calculations depending upon various factors, such as the magnitude of the pressure drop, the pipe diameter, the length of the pipeline, the Reynolds number, and whether the flow can be considered isothermal or adiabatic. This course will begin with a discussion of the gas properties needed for the calculations. There will then be a presentation of the various pipeline flow equations and a brief identification of the type of flow for which each is appropriate. Then there will be a section for each of the equations, giving the detailed equation and description of the parameters, along with example calculations of parameters such as flow rate, required diameter or pressure drop.



Course Objectives


Upon completion of this course, the participant will be able to:

  • Calculate the compressibility factor for natural gas with specified average gas pressure and temperature and known specific gravity.
  • Calculate the viscosity of natural gas with specified average gas pressure and temperature and known specific gravity.
  • Obtain a value for the friction factor using the Moody diagram for given Re and epsilon/D.
  • Calculate a value for the friction factor for specified Re and epsilon/D, using the appropriate equation for f.
  • Determine when it is appropriate to use the Darcy Weisbach equation for natural gas pipeline flow calculations.
  • Use the Darcy Weisbach equation and the Moody friction factor equations to calculate the frictional pressure drop for a given flow rate of a specified fluid through a pipe with known diameter, length and roughness.
  • Use the Weymouth equation to calculate gas flow rate through a pipe with known diameter and length, elevation difference between pipeline inlet and outlet, specified inlet and outlet pressure and enough information to calculate gas properties.
  • Use the Panhandle A equation to calculate gas flow rate through a pipe with known diameter and length, elevation difference between pipeline inlet and outlet, specified inlet and outlet pressure and enough information to calculate gas properties.
  • Use the Panhandle B equation to calculate gas flow rate through a pipe with known diameter and length, elevation difference between pipeline inlet and outlet, specified inlet and outlet pressure and enough information to calculate gas properties.


Instructor Bio


Dr. Bengtson is a graduate of Iowa State University with B.S. and M.S. degrees and of the University of Colorado with a PhD. He is a licensed Professional Engineer in Missouri. He has spent 30 years in engineering education in teaching and administrative positions, including six years as Dean of Engineering at Southern Illinois University Edwardsville. His areas of expertise are environmental engineering, hydrology and hydraulics, engineering science and renewable energy systems. He did consulting work while holding the academic positions. Prior to entering academia, Dr. Bengtson worked for Minnesota Mining & Manufacturing as a Product Development Engineer and for E. I. duPont deNemours as a Process Development Engineer. Dr. Bengtson has authored numerous publications, presentations and technical reports. He is currently active in providing continuing education opportunities for Professional Engineers and is the founder of www.engineeringexceltemplates.com and www.EngineeringExcelSpreadsheets.com, sites with the objective of providing inexpensive, easy to use Excel spreadsheets for a variety of engineering calculations.



Other Approvals


National Professional Engineer board: Not required