A MODEL-BASED ON AVERAGE VELOCITY FOR GAS-PRODUCTION PIPES SIMULATION

A macroscopic, mechanistic, and one-dimensional flow model is presente d in this paper to calculate pressure and temperature profiles of gas production systems. The model's development is based on an average vel ocity between the inlet and outlet conditions of the pipe, and has bee n successfully applied to simulate the various types of pipe in gas pr oduction. A comparison between the results of this model and those pro duced by rigorous calculation has proved that the method is potentiall y powerful. A comprehensive heat transfer model is proposed to be used with this model. Tuning factors are introduced to match experimental pressure and/or temperature values. Diameter, length and overall heat transfer coefficient are the variables selected to tune. (C) 1998 Else vier Science Ltd. All rights reserved.