A Novel 1D Approach for Modelling Gas Bladder Suppressors on the Delivery Line of Positive Displacement Pumps

Paolo Casoli (), Carlo Maria Vescovini, Hatami Garousi Masoud and Massimo Rundo
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Paolo Casoli: Department of Engineering and Architecture, University of Parma, 43124 Parma, Italy
Carlo Maria Vescovini: Department of Engineering and Architecture, University of Parma, 43124 Parma, Italy
Hatami Garousi Masoud: Department of Engineering and Architecture, University of Parma, 43124 Parma, Italy
Massimo Rundo: Department of Energy, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy

Energies, 2024, vol. 17, issue 7, 1-20

Abstract: This paper concerns the utilisation of a gas bladder hydraulic suppressor to mitigate oscillations in the delivery flow rate of positive displacement machines. The research focuses on two primary objectives: first, the experimental validation of the potential of this solution and second, the formulation of a one-dimensional fluid dynamic model for the suppressor. The foundational framework of the fluid dynamic model is based on the equations governing fluid motion with a one-dimensional approach. To accurately depict the fluid dynamics within the suppressor, a unique approach for determining the speed of sound was incorporated, and it implemented the instantaneous cross-sectional area and the inertial effect of the bladder. This paper is a development of a previous work to also investigate the positioning along the delivery pipe of the suppressor with respect to the pump. The study presents the performance of the suppressor and points out the effects of its relative position with respect to the pump that becomes particularly relevant at high speeds.

Keywords: hydraulic bladder suppressor; positive displacement pump; passive flow control; flow ripple; pressure ripple (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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