A flexible experimental apparatus for investigating water hammer and column separation in an unsteady friction-dominated pipelines has been developed and designed. The apparatus has been tested for steady and unsteady flow conditions. Transient cavitation and column separation phenomena have been observed in a number of experimental runs. Water hammer has been triggered by both the closing and opening of electro-pneumatic (EV) and hand-operated (HV) valves. The experimental data have been compared with results given from in-house numerical code written in Visual Fortran based on the method of the characteristics (MOC) with a convolution-based unsteady friction model (CBM) included. The column separation and transient cavitation phenomena are modelled via a discrete gas cavity model (DGCM). There is good agreement between the experimental and numerical results; the model is robust and, therefore, it is recommended for engineering practice. In addition, the influence of variations of the pressure wave speed and the uncertainty in flow rate measured by the electromagnetic flow meter are also investigated.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Valve-Induced Water Hammer and Column Separation in a Pipeline Apparatus


    Contributors:


    Publication date :

    2014


    Size :

    13 Seiten, Bilder, Tabellen, 35 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Water pipeline failure due to water hammer effects

    Schmitt, C. / Pluvinage, G. / Hadj-Taieb, E. et al. | Tema Archive | 2006


    Estimation of water hammer speed in composite pipeline

    Sun, Chaofan / Pang, Su-Seng / Zhao, Yi et al. | Tema Archive | 1998


    Optimization of the Location of Check Valve to Minimize the Water Hammer Effects in a Pipeline

    Jiwane, P. D. / Vasudeo, A. D. / Singh, A. K. | Springer Verlag | 2021


    Liquid Column Separation Due to Fluid Hammer Occurrence in Propellant Lines

    Lema, Marcos / Gosset, Anne / López Peña, Fernando et al. | AIAA | 2023


    Cavitation Inception in Pipeline Column Separation

    Bergant, A. / Simpson, A. R. / International Association for Hydraulic Research | British Library Conference Proceedings | 1999