Pipeline dynamics

A long pipeline is clearly a distributed system, and requires the use of partial differential equations in time and space to describe the dynamic behaviour of pressure and flow along its length. The basic equations derived in this chapter and their methods of solution apply equally to liquids and to gases. 

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Lai, Y.S. Conventional spring loaded safety relief valves subjected to back pressure. Proceedings of ASME Pressure Vessels and Piping Conference Pipeline Dynamics Valves, 1989 PVP 180, 111-118. 

In contrast to pipelines and harbor installations, platforms are dynamically loaded. Therefore in the choice of steels, in addition to strength and types of machinability, the risk of corrosion fatigue and strain-induced stress corrosion must be taken into account in combination with cathodic protection (see Sections 2.3.3 to 2.3.5). 

D7. Distefano, G. P., A Digital Computer Program for the Simulation of Gas Pipeline Network Dynamics. PIPETRAN, Version IV, Am. Gas Assoc., New York, 1970. 

Example 2-3 Scale-Up of Pipe Flow. We would like to know the total pressure driving force (AP) required to pump oil (/z = 30 cP, p = 0.85 g/cm3) through a horizontal pipeline with a diameter (D) of 48 in. and a length (L) of 700 mi, at a flow rate (Q) of 1 million barrels per day. The pipe is to be of commercial steel, which has an equivalent roughness (e) of 0.0018 in. To get this information, we want to design a laboratory experiment in which the laboratory model (m) and the full-scale field pipeline (f) are operating under dynamically similar conditions so that measurements of AP in the model can be scaled up directly to find AP in the field. The necessary conditions for dynamic similarity for this system are... 

Hydride Compressors using reversible metal hydride alloys offer an economical alternative to traditional mechanical compressors for GH2. The simplicity and passive operation of the hydride compression process offers many advantages over mechanical compressors. Hydride compressors are compact, silent, do not have dynamic seals, require very little maintenance, and can operate unattended for long periods. However, they are a very new and may be difficult to be built at the scale required for GH2 transmission pipeline service. 

Dynamic Modeling vs. Alternative Pipeline Portfolio Analysis Tools... 

Some readers may have seen pharmaceutical portfolio analysis designed and implemented in a spreadsheet or other computational applications, including the ability to compute Monte Carlo results. While these approaches can indeed be of value, our clients have seen a number of additional insights into pipeline d5mamics, which only a dynamic modeling simulation can provide. 

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