Engineering Mechanics

Proceedings Vol. 25 (2019)

ENGINEERING MECHANICS 2019

Copyright © 2019 Institute of Thermomechanics of the Czech Academy of Sciences, Prague

 

Warzyńska U., Siwulski T.:
pages 403 - 406, full text

Research and implementation works carried out at the Mechanical Faculty of Wrocław University of Science and Technology, aimed at developing a hydraulic cylinder construction with increased possibility of heat dissipation and discharge of contaminants, were in part realized by means of a numerical flow model. The model, verified by the experiment during the implementation of the project enabled the detailed identification of phenomena occurring during the fluid exchange process in the cylinder chamber. The numerical simulations made it possible to identify the processes of mixing of two domains - the liquid supplied into the chamber and the liquid volume contained in it at the moment of starting the power supply process. The article presents examples of results of model tests, the analysis of which made it possible to determine the impact of the initial position of the piston on the nature of the process of liquid mixing in the cylinder chamber and the nature of flow occurring during the process of removing liquid mixture from the system. The results of the conducted simulations and the developed preliminary relationships describing the mixing process of two liquid domains are the basis for the construction works of the newly designed hydraulic cylinder, which is initially intended for commercialization.

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