1. Time‐ and frequency‐domain analyses of the hydraulic system using a discrete numerical scheme based on equivalent circuit modelling.
- Author
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Yan, Shuangqing and Zheng, Yang
- Subjects
- *
FREQUENCY-domain analysis , *DISCRETE systems , *FREQUENCIES of oscillating systems , *EIGENANALYSIS , *COMPUTER simulation - Abstract
Mathematical modeling is widely used for the time‐and frequency‐domain analysis of hydraulic systems. To explore the complicated hydraulic transients of the piping system under various operating conditions, different formulations of the equivalent circuit model (ECM) are systematically discussed in this study. In particular, comparative studies are performed regarding the restrictions on the tempo‐spatial discretization of the time‐domain ECM and the state‐of‐the‐art numerical schemes. In addition, the eigenanalysis of the free oscillation response and frequency features of the forced oscillation response were discussed in detail, respectively. Furthermore, the influence of spatial discretization on the frequency response precision for ECM is also quantified. Analytical results indicate that the ECM can achieve satisfactory performances in both numerical simulation and frequency analysis with affordable computational effort and relatively loose tempo‐spatial discretization restriction. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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