Abstract
Reliable modeling and prediction of transients features in transmission pipelines are desirable for optimal control of gas deliverability, design and implementation of active controls, and modeling of operational behavior of network peripheral equipment (e.g., chokes, valves, compressors, etc.). A numerical procedure is developed to simulate transient phenomena in a 2-D natural gas flow. Natural gas flow in a pipe is governed by hydrodynamic equations that are highly non-linear and hyperbolic. In this paper, a special Runge-Kutta method is employed to model accurate evolution of flow characteristics. The upwind method of van Leer, in which the numerical flux vectors are split to match the directions of wave propagation, is chosen as the base solution algorithm. Furthermore, the Total Variation Diminishing (TVD) technique is employed to extend to higher-order accuracy in order to resolve sharp discontinuous fronts. Several test cases were simulated to validate the developed code. The numerical algorithm is very stable, and although the problems solved were stiff and possess multiple and disparate time scales, excellent prediction for the unsteady features, especially sharp wave front and proper front tracking, were obtained.
Original language | English (US) |
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Pages | 473-482 |
Number of pages | 10 |
DOIs | |
State | Published - Jan 1 1996 |
Event | Proceedings of the 1996 Gas Technology Symposium - Calgary, Can Duration: Apr 28 1996 → May 1 1996 |
Other
Other | Proceedings of the 1996 Gas Technology Symposium |
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City | Calgary, Can |
Period | 4/28/96 → 5/1/96 |
All Science Journal Classification (ASJC) codes
- General Engineering