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Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 14–17, 2019
Paper Number: PSIG-1923
... design time step derivative richard myer psig 1923 piping simulation midstream oil & gas local extrapolation psig 1923 pipe equation approximation compressor amplification factor backward difference single pipe pipe example accuracy oscillation output pressure © Copyright 2019...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 14–17, 2019
Paper Number: PSIG-1932
... calculated using Ref. 1. The most significant difference is in the derivative of isothermal bulk modulus with pressure which we will discuss at some length. Sonic velocity can be computed directly as the square root of the adiabatic bulk modulus divided by the density of the fluid. Unfortunately, we have...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 12–15, 2015
Paper Number: PSIG-1508
... Abstract This paper proposes a novel model-based leak location method for pipelines. We first formulate the leak location problem into an optimization problem under certain conditions. Then we develop a derivative-based search algorithm to solve that optimization problem. The derivative...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, October 30–31, 1986
Paper Number: PSIG-8603
.... optimization problem pump schedule constraint water system cost savings operation derivative reservoir level duty cycle algorithm procedure peak period control variable penalty function optimization algorithm artificial intelligence gradient search method reservoir equation ELINE...

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