The paper discusses thermodynamic phenomena accompanying the flow of gas in a slotted seal. The analysis of the gas flow has been described based on an irreversible adiabatic transformation. A model based on the equation of total enthalpy balance has been proposed. The iterative process of the model aims at obtaining such a gas temperature distribution that will fulfill the continuity equation. The model allows for dissipation of the kinetic energy into friction heat by making use of the Blasius equation to determine the friction coefficient. Within the works, experimental research has been performed of the gas flow in a slotted seal of slot height 2 mm. Based on the experimental data, the equation of local friction coefficient was modified with a correction parameter. This parameter was described with the function of pressure ratio to obtain a mass flow of the value from the experiment. The reason for taking up of this problem is the absence of high accuracy models for calculating the gas flow in slotted seals. The proposed model allows an accurate determination of the mass flow in a slotted seal based on the geometry and gas initial and final parameters.

JO - Archives of Thermodynamics L1 - http://sd.czasopisma.pan.pl/Content/105624/PDF/07_paper.pdf L2 - http://sd.czasopisma.pan.pl/Content/105624 IS - No 3 EP - 108 KW - slotted seals KW - annular slot KW - friction coefficient KW - gas flow ER - A1 - Joachimiak, Damian A1 - KrzyĆlak, Piotr PB - The Committee on Thermodynamics and Combustion of the Polish Academy of Sciences JF - Archives of Thermodynamics SP - 95 T1 - A model of gas flow with friction in a slotted seal UR - http://sd.czasopisma.pan.pl/dlibra/docmetadata?id=105624 DOI - 10.1515/aoter-2016-0022