Experimental evaluation of effective parameters on characteristic curves of hydraulic ram pumps

Document Type : Research Note


Department of Civil Engineering, Jundi-Shapur University of Technology, Dezful, Iran


The effects of non-dimensional parameters on the characteristic curves of a ram pump were evaluated in this study using an experimental model. To do so, after providing dependent and independent parameters using dimensional analysis, effect of each independent parameter was examined on the dependent parameter. Experimental observations showed that relative pumping discharge (q/QT), relative wasting discharge (Q/QT) and pump efficiency (η) were depended on length to diameter ratio of drive pipe (L/D) and pressure head ratio (h/hm). Impulse valve parameter (nD/v0) was depended on L/D, h/hm and Reynolds number of flow in drive pipe. Characteristic curves were presented for ram pump used in this study to estimate dependent parameters as function pressure head ratio for various ratios of length to diameter. In addition, characteristic equations of the used ram pump were introduced using nonlinear regression. Evaluation of results showed that the characteristic curves and equations can be designed a ram pump system with high accurate, and this design method can be proposed for any kinds of ram pumps to use in engineering purpose.


Main Subjects

1.Filipan, V. and Virag, Z. Mathematical modeling of a hydraulic ram pump system", Strojni_ski vestnik Journal of Mechanical Engineering, 49, pp. 137-149 (2003).
2. O'Brien, M.P., and Gosline, J.E. The Hydraulic Ram, University of California press, pp. 20-117 (1933).
3. Krol, J. The automatic hydraulic ram", Proceedings of the Institution of Mechanical Engineers, 165, pp. 53-73 (1951).
4. Rennie, L. and Bunt, E. The automatic hydraulic ram", South African Mechanical Engineer, 31, pp. 258- 273 (1981).
5. Schiller, E., and Kahangire, P. Analysis and computerized model of the automatic hydraulic ram pump", Canadian Journal of Civil Engineering, 11, pp. 743- 750 (1984).
6. Basfeld, M., and Muller, E.-A. The hydraulic ram", Forschung im Ingenieurwesen, 50(5), pp. 141-147 (1984).
7. Tacke, J. Hydraulic rams; a comparative investigation", TU Delft, Report 88-1 (1988).
8. Rennie, L.C. and Bunt, E.A. The automatic hydraulic ram-experimental results", Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 204, pp. 23-31 (1990).
9. Young, B. Design of hydraulic ram pump systems", Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 209, pp. 313- 322 (1995).
10. Young, B. Simpli_ed analysis and design of the hydraulic ram pump", Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 210, pp. 295-303 (1996).
11. Young, B. Design of homologous ram pumps", Journal of Fluids Engineering, 119, pp. 360-365 (1997).
12. Najm, H., Azoury, P., and Piasecki, M. Hydraulic ram analysis: a new look at an old problem", Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 213, pp. 127-141 (1999).
13. Maratos, D. Technical feasibility of wave power for seawater desalination using the hydro-ram (Hydram)", Desalination, 153, pp. 287-293 (2002).
14. Suarda, M. and Wirawan, I. Kajian eksperimental pengaruh tabung udara pada head tekanan pompa hidram", Jurnal Energi Dan Manufaktur, 3, pp. 70- 82 (2008).
15. Saito, S., Takahashi, M., and Nagata, Y. E_ects of the air volume in the air chamber on the performance of water hammer pump", International Journal of Fluid Machinery and Systems, 4(2), pp. 225-261 (2011).
16. Nwosu, C.A. and Madueme, T.C. Recycled micro hydropower generation using hydraulic ram pump (hydram)", International Journal of Research in Engineering & Technology, 1(3), pp. 1-10 (2013). 294 R. Fatahi-Alkouhi and B. Lashkar-Ara/Scientia Iranica, Transactions A: Civil Engineering 26 (2019) 283{294
17. Sheikh, S., Handa, C.C. and Ninawe, A.P. Design methodology for hydraulic ram pump (hydram)", International Journal of Mechanical Engineering and Robotic Research, 2(4), pp. 170-175 (2013).
18. Yang, K., Li, J., Guo, Y., Fu, H., and Wang, T. Design and hydraulic performance of a Novel hydraulic ram pump", International Conference on Hydro-Informatics: City College of New York, USA, pp. 1-11 (2014).
19. Inthochot, M., Saehaeng, S., Max, J., Muller, J., and Spreee, W. Hydraulic ram pumps for irrigation in northern Thailand", Proceeding of Agriculture and Agricultural Science, 5, pp. 107-114 (2015).
20. Mbiu, R.N., Maranga, S.M., and Mwai, M. Performance testing of hydraulic ram pump", Proceedings of the Sustainable Research and Innovation (SRI) Conference, pp. 1-9 (2015).