International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
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Bubble formation in globe valve and flow characteristics of partially filled pipe water flow

  • Nguyen, Quang Khai (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Jung, Kwang Hyo (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Lee, Gang Nam (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Park, Hyun Jung (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • To, Peter (College of Science & Engineering, James Cook University) ;
  • Suh, Sung Bu (Department of Naval Architecture and Ocean Engineering, Dong-Eui University) ;
  • Lee, Jaeyong (Department of Naval Architecture and Ocean Engineering, Dong-Eui University)
  • Received : 2021.04.15
  • Accepted : 2021.06.24
  • Published : 2021.11.30
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Abstract

Air bubble entrainment is a phenomenon that can significantly reduce the efficiency of liquid motion in piping systems. In the present study, the bubble formation mechanism in a globe valve with 90% water fraction flow is explained by visualization study and pressure oscillation analysis. The shadowgraph imaging technique is applied to illustrate the unsteady flow inside the transparent valve. This helps to study the effect of bubbles induced by the globe valve on pressure distribution and valve flow coefficient. International Society of Automation (ISA) recommends locations for measuring pressure drop of the valve to determine its flow coefficient. This paper presents the comparison of the pressures at different locations along with the upstream and the downstream of the valve with the values at recommended positions by the ISA standard. The results show that in partially filled pipe flow, the discrepancies in pressure between different measurement locations in the valve downstream are significant at valve openings less than 30%. The aerated flow induces the oscillation in pressure and flow rate, which leads to the fluctuation in the flow coefficient of the valve. The flow coefficients have a linear relationship with the Reynolds number. For the same increase of Reynolds number, the flow coefficients grow faster with larger valve openings and level off at the opening of 50%.

Keywords

Acknowledgement

This work was supported by the R&D Platform Establishment of Eco-Friendly Hydrogen Propulsion Ship Program (No. 20006636) and Global Advanced Engineer Education Program for Future Ocean Structures (P0012646), funded by the Ministry of Trade, Industry and Energy.

References

  1. Alimonti, C., 2014. Experimental characterization of globe and gate valves in vertical gas-liquid flows. Exp. Therm. Fluid Sci. 54, 259-266. https://doi.org/10.1016/j.expthermflusci.2014.01.001.
  2. Bauman, H.D., 2009. Control Valve Primer: A User's Guide, fourth ed. ISA Research Triangle Park, Durham, NC, USA, pp. 53-61.
  3. Chatterjee, S., Sugilal, G., Prabhu, S.V., 2017. Heat transfer in a partially filled rotating pipe with single phase flow. Exp. Therm. Fluid Sci. 83, 47-56. https://doi.org/10.1016/j.ijthermalsci.2017.11.024.
  4. Chatterjee, S., Sugilal, G., Prabhu, S.V., 2018. Flow transitions in a partially filled rotating inclined pipe with continuous flow. Int. J. Therm. Sci. 125, 132-141. https://doi.org/10.1016/j.expthermflusci.2016.12.007.
  5. Chikhi, N., Clavier, R., Laurent, J.-P., Fichot, F., Quintard, M., 2016. Pressure drop and average void fraction measurements for two-phase flow through highly permeable porous media. Ann. Nucl. Energy. https://doi.org/10.1016/j.anucene.2016.04.007.
  6. Davis, J.A., Stewart, M., 2002a. Predicting globe control valve performance-Part I: CFD modeling. J. Fluid Eng. 124 (3), 772-777. https://doi.org/10.1115/1.1490108.
  7. Davis, J.A., Stewart, M., 2002b. Predicting globe control valve performance-Part II: experimental verification. J. Fluid Eng. 124 (3), 778-783. https://doi.org/10.1115/1.1490126.
  8. Dempster, W., Elmayyal, W., 2013. Two-phase discharge flow prediction in safety valves. Int. J. Pres. Ves. Pip. 110, 61-65. https://doi.org/10.1016/j.ijpvp.2013.04.023.
  9. Dinaryanto, O., Prayitno, Y.A.K., Majid, A.I., Hudaya, A.Z., Nusirwan, Y.A., Widyaparaga, A., Indarto, Deendarlianto, 2017. Experimental investigation on the initiation and flow development of gas-liquid slug two-phase flow in a horizontal pipe. Exp. Therm. Fluid Sci. 81, 93-108. https://doi.org/10.1016/j.expthermflusci.2016.10.013.
  10. Ferreira, J.P.B.C.C., Martins, N.M.C., Covas, D.I.D., 2018. Ball valve behavior under steady and unsteady conditions. J. Hydraul. Eng. 144 (4) https://doi.org/10.1061/(ASCE)HY.1943-7900.0001434.
  11. Grace, A., Frawley, P., 2011. Experimental parametric equation for the prediction of valve coefficient (Cv) for choke valve trims. Int. J. Press. Vessel. (88), 109-118. https://doi.org/10.1016/j.ijpvp.2010.11.002.
  12. Henry, C.-H. Ng, Cregan, H.L.F., Dodds, J.M., Poole, R.J., Dennis, D.J.C., 2018. Partially filled pipes: experiments in laminar and turbulent flow. J. Fluid Mech. 848, 467-507. https://doi.org/10.1017/jfm.2018.34.
  13. Instrument Society of America, 1972. Control Valve Sizing Equations for Incompressible Flow. ISA-S39.1 Standard, Research Triangle Park: Durham, NC, USA.
  14. International Society of Automation, 2012. Flow Capacity - Sizing Equations for Fluid Flow under Installed Conditions. ANSI/ISA-75.01.01-2012 standard, Research Triangle Park: Durham, NC, USA.
  15. Lemmens, M.H.M., 2006. Single- and Two-phase Flow through a Globe Valve: Experiments and Numerical Simulations. Master Internship Project, Roma, Italy.
  16. Monsen, J., 2013. Control Valve Application Technology: Techniques and Considerations for Properly Selecting the Right Control Valve, first ed. Valin Corporation, San Jose, CA, USA, pp. 17-32.
  17. Ng, T.S., Lawrence, C.J., Hewitt, G.F., 2001. Gravity-driven laminar flow in a partially - filled pipe. Chem. Eng. Res. Des. 79, 499-511. https://doi.org/10.1205/026387601750282445.
  18. Nguyen, Q.K., Jung, K.H., Lee, G.N., Suh, S.B., To, P., 2020. Experimental study on pressure distribution and flow coefficient of globe valve. Processes 8, 875. https://doi.org/10.3390/pr8070875.
  19. Parcol valve manufacturer, 2016. Handbook for Control Valve Sizing. Koso Parcol, Canegrate Mi, Italy.
  20. Rahmeyer, W., Driskell, L., 1985. Control valve flow coefficients. J. Transport. Eng. 111, 358-364. https://doi.org/10.1061/(ASCE)0733-947X(1985)111:4(358).