The study of the dynamics of gas shaped binding elements of compressor station

Abstract

The 3D modeling pipeline of compressor station and its shaped elements (bends, tees), with the complex movement of the gas flow, flow direction change, tube wall erosive wear was developed.
Based on ANSYS Fluent, ANSYS CFX software systems, the dynamics modeling technique of gas shaped binding elements at the compressor station was developed. A mathematical model based Navier-Stokes equations, energy transfer, closed two-parameter Launder-Sharma k–ε turbulence model using the tool with the appropriate initial and boundary conditions was developed.
The dynamics of the gas tap and tees of the compressor station binding was studied. For tees modeling was performed for different patterns of gas flow (gas moves through the tee line and then flows to the tee bend; gas flows through the tee bend and then to the tee line directed to one of the tee line sides). The modeling results were visualized using software systems postprocessors by plotting flow lines velocity module sizes and pressure contours in longitudinal and transverse sections, filling module velocity and pressure in the inner cavity of shaped elements. The exact value of the velocity and pressure at different points of the inner cavity shaped elements was determined. The locations of confuser and diffuser effects, vortex, reverse gas flow, “stagnant dome”, and gas flow separation from the shaped element wall, locations of possible collisions of particles carried by the flow with the shaped element wall were studied. These results make it possible to study erosive wear, stress-strain states of the compressor station shaped binding elements and pipeline adjacent sections.