Wave tracking method of hydraulic transients in pipe systems with pump shut-off under simultaneous closing of spherical valves

Zh. Zhang

Renewable Energy, 2019, vol. 132, issue C, 157-166

Abstract: The limited wave propagation speed in water permits the propagation of pressure surges in hydraulic transients to be tracked in the time series. This occurs by tracking the primary (F) and the reflected (f) waves. The wave tracking method has been demonstrated to be applicable to highly complex hydraulic systems. The wave propagation induced by passing through a T-junction in the flow complies with the wave conservation laws which concern both the wave reflection and the transmission. It has been shown that all computations can be simply implemented in a computation tool like MS Excel. This considerably ensures both the accuracy and the reliability of computations. At a hydraulic system of Pelton turbines, excellent computational results have been achieved. The application to a highly complex hydraulic system with pump shut-off and the simultaneous closing of a spherical valve also showed excellent results, when compared with the field measurements. The key point in the presented computations is to unify the characteristics of the pump and the spherical valve. The entire computation covers the flow rate in the system, the reverse flow through the pump, the pressure response, the deceleration of the rotational speed and the system oscillations.

Keywords: Hydraulic transients; Wave tracking method; Conservation law; Pump; Spherical valve; Hydraulic characteristics (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148118309169
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:132:y:2019:i:c:p:157-166

DOI: 10.1016/j.renene.2018.07.119

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().