Published October 3, 2018 | Version v1
Conference paper Open

Optimising technique in matching combined diesel engine or gas turbine (CODOG) propulsion system to hull and propeller of a frigate

  • 1. Department of Marine Engineering, Rivers State University, Port Harcourt, Nigeria

Description

In operation of a combined diesel engine or gas turb ine (CODOG) propulsion system, optimal matching of prime movers with propellers and ship hull is of great importance. Selection of an ideal propeller pitch that will be apt for different operating conditions of a marine vessel is an arduous task and requires initial assessment with a dedicated mathematical model. In this work, matching CODOG propulsion system to achieve best operation of type F90 frigate was carried out. A non-complex Java computer program (prop-matching) was developed to facilitate the matching process using dedicated simulation models in design and off-design conditions. The goal is to understand the interaction of either diesel engine or gas turbine with propeller and ship hull. The pitch of a controllable pitch propeller (CPP) was varied to the limit of optimal operation to absorb the power in either diesel engine or gas turbine mode in wide range of engine speeds and load. If a pitch other than that for the appropriate load and speed is selected, there would be an increase in fuel consumption, cavitation, vibration induced stresses in addition to stresses caused by engine load and wave motion on the vessel. The determination of the optimal operating points will lead to significant improvement in flexibility, minimum environmental impact and operating cost. Propeller characteristics were determined with hydrodynamics based on updated B-series regression polynomials which were correlated using Boundary Element Methods (BEM) and tuned with semi-empirical corrections. The analysis showed that the pitch ratio of a propeller has a dominating influence in the selection of the optimal points under operations in diesel or gas turbine mode and that the highest propeller efficiency did not occur at the optimal points. The output results for the open water propeller characteristics from this model are in good agreement with results of other authors and commercial Lindo software. 

Files

INEC 2018 Paper B Bob-Manuel FINAL.pdf

Files (2.2 MB)

Name Size Download all
md5:fcaed8f8352bab95aa9505a68a040416
2.2 MB Preview Download

Additional details

References

  • Barry, C. (2005). Propeller Selection for Boats and Small Ships. USA: E -Marine Training.
  • Bezzi, P. (2014). How to match Engine and Propeller -France Helices. Retrieved March 23, 2017, from Marine Diesel. www.marinedieseleurope.com/blog/2014/11/.../match-egine-propeller-franc -helices
  • Bob-Manuel, K. D.H. (2017). Advance Marine Engines & Power Plants. Lecture Notes, Department of Marine Engineering. Rivers State University. Port Harcourt, Nigeria.
  • Dalheim, O. O. (2015). Development of a Simulation Model for Propeller Performance Master Thesis in Marine Technology. Department of Marine Technology. Norwegian University of Science and Technology. NTNU Trondheim, Norway.
  • Gaafary, M.M., El-Kilani, H.H. & Moustafa (2011). Optimum Design of B-series Marine Propellers. Alexandria Engineering Journal 50 www. Elsevier.com/locate/ac, p 13-18
  • Grunditz, G. (2015). Optimizing Propeller and Propulsion, the Quest for Reduced Fuel Consumption, Emission and Noise Level. Marine Technology, 49-55. Retrieved 23 July, 2017 from https://higherlogicdownload.s3.amazonaws.com/SNAME/d7614a0a-1160-449c-8cdb12d56ad4c697/UploadedImages/JAN2015%20MT%20Grunditz.pdf
  • John, B. (1976). Matching Engine and Propeller. Ann Arbor, Michigan: Department of Naval Architecture and Marine Engineering.University of Michigan.
  • Kuiken, K. (2008). Ship Propulsion and Propellers. In Diesel Engines II for Ship Propulsion and Power Plants . Onnen, The Netherlands: Target Global Energy Training, 368-395..
  • Lee, C. S., Choi, Y. D.; Ahn, B-K.; Shin, M. S & Jang, H.G (2010) Performance Optimization of Marine Propellers, Inter J. Nav Archit Oc Engng. 2, 211-216
  • Masson Marine (Propellers - CPP and FPP) www.masson-marine.com/en/propellers-cpp-and-fpp_03.html,Retrieved (21st Apri, 2018)
  • NNS Thunder (F90) – Wikipedia (2017)
  • Oosterveld, M. (1975). Further Computer- analyzed data of the Wageningen B-Series. International Shipbuilding Progress, Shipbuilding and Marine Engineering Monthly.
  • Pivano, L. (2008). Thrust Estimation and control of Marine Propeller in four Quadrant Operation. Trondheim,Norway.: Norwegian University of Science and Technology.
  • Priyanta, D.- Basic turbine -propeller matching Module 7, Department of Marine Engineering ITS Surabaya www/scribd/document/574415/1-10 Accessed: April, 2015
  • Salvatore, F., Greco, L. & Calcagni, D. (2011). Computational Analysis of Marine Propeller Performance and Cavitation by Using an inviscid-flow BEM model, Second International Symposium on Marine Propulsors, smp'11, Hamburg, Germany,
  • Schanz, F. (I967). The controllable pitch propeller as an integral part of the ships propulsion system. Michigan,USA: Society of Naval Architecture and Marine Engineers.
  • Schulten, P. & Johannes, M. (2005). Interaction between diesel engines ship and propeller during manoeuvring. The Netherlands: Delft University Press.
  • Stalinski, J. (1983). Ship propellers: Marine Engineering Department, Rivers State University
  • Stapersma, D. &.Woud, H. K. (2005). Matching propulsion engine with propulsor. Journal of Marine Engineering & Technology, A7, 25 -32..
  • William, E. & Leslie, J. (2012). Applied Heat for Engineers. London: Adlard Coles Nautical.
  • Zarbock, O. (2009). Controllable Pitch Propellers for Future Warships and Yachts. First International Symposium on Marine Propulsors, (pp. 1-6). Trondheim,Norway.