Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Speed-Power Performance Analysis of an Existing 8,600 TEU Container Ship using SPA(Ship Performance Analysis) Program and Discussion on Wind-Resistance Coefficients

  • Received : 2020.08.09
  • Accepted : 2020.09.18
  • Published : 2020.10.30
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Abstract

This study discusses data collection, calculation of wind and wave-induced resistance, and speed-power analysis of an 8,600 TEU container ship. Data acquisition system of the ship operator was improved to obtain the data necessary for the analysis, which was accomplished using SPA (Ship Performance Analysis, Park et al., 2019) in conformation with ISO15016:2015. From a previous operation profile of the container, the standard operating conditions of mean draft were 12.5 m and 13.6 m, which were defined with the mean stowage configuration of each condition. Model tests, including the load-variation test, were conducted to validate new ship performance and for the speed-power analysis. The major part of the added resistance of container ship is due to the wind. To check the reliability of wind-resistance calculation results, the resistance coefficients, added resistance, and speed-power analysis results using the Fujiwara regression formula (ISO15016:2015) and Computational fluid dynamics (Ryu et al., 2016; Jeon et al., 2017) analysis were compared. Wind speed and direction measured using an anemometer were used for wind-resistance calculation and the wave resistance was calculated using the wave-height and direction-data from weather information. Also, measured water temperature was used to calculate the increase in resistance owing to the deviation in water density. As a result, the SPA analysis using measured data and weather information was proved to be valid and able to identify the ship's resistance propulsion performance. Even with little difference in the air-resistance coefficient value, both methods provide sufficient accuracy for speed-power analysis. The differences were unnoticeable when the speed-power analysis results using each method were compared. Also, speed-power analysis results of the 8,600 TEU container ship in two draft conditions show acceptable trends when compared with the model test results and are also able to show power increase owing to hull fouling and aging. Thus, results of speed-power analysis of the existing 8,600 TEU container ship using the SPA program appropriately exhibit the characteristics of speed-power performance in deal conditions.

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References

  1. Freitas, L.D., Silberschmidt, N., Pappas, T., & Connolly, D. (2019). Full-scale Performance Measurement and Analysis of the Silverstream Air Lubrication System. Proceeding of the 4th Hull Performance & Insight Conference, Gubbio, Italy, 201-210. http://data.hullpic.info/HullPIC2019_gubbio.pdf
  2. ISO. (2015). Ships and Marine Technology - Guidelines for the Assessment of Speed and Power pPrformance by Analysis of Speed Trial Data (ISO15016:2015). International Standardization Organization, Geneva, Switzerland.
  3. IMO. (2014). 2014 Guideline on the Method of Calculation of the Attained Energy Efficiency Design Index (EEDI) for New Ships. Resolution Marine Environment Protection Committee, 245(66), International Maritime Organization, London.
  4. IMO. (2019). Energy Efficiency Improvement Measure for Existing Ships. Marine Environment Protection Committee, 2/7/2, International Maritime Organization, London.
  5. Jeon, G.M., Ryu, J.H., Park, J.C., & Shin, M.S. (2017). CFD Simulation of Aerodynamic Effects due to Arrangement of Superstructures of Container Ship. Proceedings of the International Symposium on Marine Engineering (ISME), Tokyo, Japan.
  6. Kim, J.G., & Kim, D.E. (2016). Comparison of the Speed Trial Results using ISO15016:2015 and Optimization (Tanker, Bulk Carrier). Bulletin of the Naval Architects of Korea, 53(1), 35-38.
  7. Lee, G.J., Shin, M.S., Park, B.J., Ki, M.S. & Jeon, K.H. (2019). Validity Analysis of Speed, Wave Height and Wind Speed for the Operational Performance of Bulk Carrier. Journal of the Korean Society of Marine Engineering, 43(3), 183-196. https://doi.org/10.5916/jkosme.2019.43.3.183
  8. Lee, T.I, An, G.S., Ok, Y.B., & Kim, M.U. (2016). Analysis of the Speed Trial and Application of ISO15016:2015 (Container). Bulletin of the Naval Architects of Korea, 53(1), 22-27.
  9. Lim, S., Teo, R., & Sia, T.C. (2019). A Digital Business Model for Vessel Performance Monitoring. Proceedings of the 4th Hull Performance & Insight Conference, Gubbio, Italy, 103-113. http://data.hullpic.info/HullPIC2019_gubbio.pdf
  10. Murrant A., Kennedy, A., Pallare, R., & Montrose, M. (2019). Effect of Hull and Propeller Cleaning on Propulsion Efficiency of an Offshore Patrol Vessel. Proceedings of the 4th Hull Performance & Insight Conference, Gubbio, Italy, 272-291. http://data.hullpic.info/HullPIC2019_gubbio.pdf
  11. Park, B.J., Shin, M.S., Lee, G.J., & Ki, M.S. (2019). A New Method to Analyse the Speed Power Performance of Operating Ships and Its Implementation. Journal of Advanced Marine Engineering and Technology, 43(10), 822-829. https://doi.org/10.5916/jkosme.2019.43.10.822
  12. Ryu, J.H., Jeon, G.M., Ock, D.K., Park, J.C., & Shin, M.S. (2016). CFD Simulation of Aerodynamic Drag on Superstructures of Container Ship. Proceedings of Korean Society for Computational Fluids Engineering, 186-187. http://www.dbpia.co.kr/journal/articleDetail?nodeIdNODE07066013
  13. Shin, M.S., Park, B.J., Lee, G.J., & Ki, M.S. (2016). Revision of the ISO15016 and Analysis Program (i-STAP) for the Analysis of the EEDI Reference Speed. Bulletin of the Naval Architects of Korea, 53(1), 17-21.
  14. Yu, G.B., Han, Y.S., & Gang, D.Y. (2016). Analysis of the Speed Trial and the Accuracy Validation of ISO15016:2015 (COT, LNGC). Bulletin of the Naval Architects of Korea, 53(1), 28-34.