Abstract: Lagrangian method (Discrete Phase Model) made simulation of multiphase flows motion in compressor station fittings (elbows, tees) to program complex ANSYS Fluent R17.0 Academic.

Keywords: elbow, discrete phase, erosion wear, computer modeling, Lagrangian method, tee.

Summary: Theoretical questions of the impact of gas combustion heat on operating parameters of gas networks of settlements where studied.

Key words: heating system, gas lower calorific value, individual gas flow rate, boiler efficiency, humidity.