Analysis of a High Performance Hydraulic System by Numerical Methods

Norley, Jake (2017) Analysis of a High Performance Hydraulic System by Numerical Methods. [USQ Project]


A high performance, high speed hydraulic system was given by the sponsor company for analysis. A numerical method was used to analyse the system with an aim of learning about the operation of the system and identifying and resolving areas of inefficiency within the system.

Three-dimensional (3D) steady state simulations were developed for the two sizes of hydraulic system using ANSYS. For these, a stationary velocity inlet was set to represent the piston motion and the valve was locked at different positions and orientations. High velocity areas were found as the fluid flowed through the valve and around the sharp corners. It was found that the orientation of the valve seat made a difference to the flow and it appeared that orienting the valve at 45◦ would cause the system to perform better.

Based on the results of the steady state analysis, an improved system was developed and simulated. This included an improved valve and filleted corners which were able to reduce the areas of inefficiency as identified in the steady state simulations.

Finally, a two-dimensional (2D) transient analysis of the small model used dynamic mesh to accelerate the piston to push the fluid and allow the fluid forces to open the valve. This provided a more accurate representation of the system operation. The transient analysis was able to show the flow patterns developing and the swirling of the flow in different regions throughout the domain.

Based on the findings, recommendations were made to the sponsor company. These were to test the findings on the real system, to continue to develop and improve the simulations to provide an even more accurate representation of the system, and to continue to use the simulations to justify design choices.

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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Engineering (Mechanical)
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 - 31 Dec 2021)
Supervisors: Mossad, Ruth
Date Deposited: 07 Sep 2022 04:29
Last Modified: 07 Sep 2022 04:29
Uncontrolled Keywords: hydraulic system; analysis

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