Pipelines / Gathering System Networks

• Specify ambient conditions or overall heat transfer coefficient
• Calculate pressue drop for horizontal, vertical and inclined flow
• Obtain results for one, two and three phase flow
• Available multiphase flow correlations include Beggs and Brill, Dukler, Duns and Ros, Orkiszewski, Mandhane-Gregory-Aziz, Aziz-Govier-Fogarasi, Lockhart-Martinelli, and OLGAS.  OLGAS is a third-party package licensed through SPT Group.
• Perform backward calculations

About the Pipeline

• The Pipeline block calculates the pressure drop, temperature change, and other properties of a single- or multiphase stream as it flows through segments of pipe.
• The pipeline has one Process Stream inlet, one Process Stream outlet, and an optional Energy Stream attachment.
• The pipeline may include any number of segments, each with different specifications. In addition, a segment may be a fitting or valve between any two segments of pipe.
• To accurately predict properties affected by inclination, separate segments within the Pipeline block should be used to represent portions of a pipeline with different inclination angles.
• The difference between the Pipeline block and Line Sizing is that the Pipeline calculates pressure drop only and does not perform sizing calculations as does the Line Sizing analysis.
• Execution may proceed upstream through the Pipeline (i.e. Pipeline supports forward and backward calculation).

Line Sizing Analysis

• The Line Sizing Analysis calculates either the minimum diameter that meets the pressure drop specification or the pressure drop for a fixed pipe diameter.
• The Line Sizing Analysis assumes that the lengths are relatively short with no heat transfer occurring such that fluid properties are constant.
• For pressure drop calculations, which account for the temperature changes due to pressure drop, use a Pipeline instead of Line Sizing. (The Pipeline cannot perform sizing calculations).