Aerospace and Mechanical Engineering | Article | Published 2023-06-03
Goal: To consider the issue is the verification of a numerical model of air exchange during the movement of a train in a subway tunnel, taking into account the process of interaction of regular ventilation with the "piston" effect of the displaced air by the body of the moving train. Methods: Scanning and data processing. The equipment used was a pressure cylindrical Pitot tube PFM 2, for measuring differential pressure and measuring air flow velocity, volumetric flow and temperature. Results: The dynamic structure of the disturbed fluid at the time of arrival of the train and its departure is established. Practical significance: The factors of the design solutions of the portal part of the tunnel affecting the process of air exchange with the combined action of ventilation and the piston effect of moving trains are determined.