Lookup NU author(s): Dr Xueguan Song,
Dr Lei Cui,
Dr Wenping Cao
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
In this study, a numerical model is developed to investigate the fluid and dynamic characteristics of a direct-operated safety relieve valve (SRV). The CFX code has been used to employ advanced computational fluid dynamics (CFD) techniques including moving mesh capabilities, multiple domains and valve piston motion using the CFX Expression Language (CEL). With a geometrically accurate CFD model of the SRV and the vessel, the complete transient process of the system from valve opening to valve closure is simulated. A detailed picture of the compressible fluid flowing through the SRV is obtained, including small-scale flow features in the seat regions. In addition, the flow forces on the disc and the lift are monitored and analyzed and the comparison of the effects of design parameters, are examined; including the adjusting ring position, vessel volume and spring stiffness. Results from the model allow the fluid and dynamic characteristics of the SRV to be investigated and shows that the model has great potential of assisting engineers in the preliminary design of SRVs, operating under actual conditions which are often found to be difficult to interpret in practice. (C) 2014 Elsevier Ltd. All rights reserved.
Author(s): Song XG, Cui L, Cao MS, Cao WP, Park Y, Dempster WM
Publication type: Article
Publication status: Published
Journal: Energy Conversion and Management
Print publication date: 17/03/2014
ISSN (print): 0196-8904
ISSN (electronic): 1879-2227
Altmetrics provided by Altmetric