Estimating Natural Gas Pipeline Friction Parameters

by Michael A. Stoner, (A.M.ASCE), Owner; Stoner Assocs., Inc., Carlisle, PA,
Michael A. Karnitz, Staff Engr.; Consumers Power Co., Jackson, MI,

Serial Information: Transportation Engineering Journal of ASCE, 1974, Vol. 100, Issue 3, Pg. 757-768

Document Type: Journal Paper


In the design and operation of natural gas pipelines, modeling the pressure-flow relationship is of prime importance. There are certain key parameters which must be known before a simulator will accurately model a given pipeline system. These include length, diameter, and friction factor. The length and diameter can be determined easily. Obtaining friction factors or efficiency parameters is a more difficult problem. The simplest and most frequently used method to determine this parameter is to perform a flow test, measuring the pressures and flows. The measured data are then used in a steady-state equation to compute the friction parameter. The method suggested herein is to use a transient simulator in combination with a least-squares algorithm. The parameters are obtained without attempting to hold the pipeline at steady-state conditions.

Subject Headings: Flow measurement | Natural gas | Gas pipelines | Friction | Parameters (statistics) | Model accuracy | Pressurized flow | Steady states

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