Analysis of a Self-Propelled Dredger Capability in Shallow Waters Operation

  IJETT-book-cover  International Journal of Recent Engineering Science (IJRES)          
  
© 2018 by IJRES Journal
Volume-5 Issue-2
Year of Publication : 2018
Authors : Daniel Tamunodukobipi, Samson Nitonye, Sidum Adumene
  10.14445/23497157/IJRES-V5I2P102

MLA 

MLA Style: Daniel Tamunodukobipi, Samson Nitonye, Sidum Adumene  "Analysis of a Self-Propelled Dredger Capability in Shallow Waters Operation" International Journal of Recent Engineering Science 5.2(2018):4-9. 

APA Style: Daniel Tamunodukobipi, Samson Nitonye, Sidum Adumene, Analysis of a Self-Propelled Dredger Capability in Shallow Waters Operation.  International Journal of Recent Engineering Science, 5(2),4-9.

Abstract
This research presents a numerical and regressional analysis of a self-propelled trailing suction hopper dredger capability in the Chanomi creek of 4m depth. The analysis considered using relation that expresses the payload, lightweight, deadweight, hopper capacity, work schedule, pump capacity, engine performance, and sand density to determine the possible operation and duration of the excavation project based on the vessel cycle time. Using the regressional relationship, the dredger capacity was obtained, and the result shows that a propulsive power of 678.75kW, bow thrusters power of 116.9kW, and pump power of 540kW is needed for a 2324 tonnes hopper dredger capacity for the project. The result further revealed that the pump flow rate of 0.45m3 /s per suction tube with a suction diameter of 0.338m is needed to fill the hopper capacity of 1000m3 every 60 minutes. For a payload of 1356tonnes, the reclamation operation requires 466trips for one year. This provides an operational guide to operators in the sector on decision making and cost reduction operation.

Reference
[1] Xinquan, C., Qi, Y., & Jiahua, T (2015). Hydrodynamic Simulation for a Large Self-propelled Cutter Suction Dredger Working at Sea. Proceedings of the Twenty-fifth; International Ocean and Polar Engineering Conference Kona, Big Island Hawaii
[2] Rhee, C. V. (2002 B) Numerical Modeling of the Flowing and Setting in a Trailing Suction Hopper Dredger. 15th International Conference on Hydro transport, Banff, Canada
[3] Braaksma, J., Klaasens, J., Babuska, R., & Keizer, C. D (2007). A Computationally Efficient Model for Predicting Overflow Mixture Density in a Hopper Dredger, Terra et Aqua 106(16, 16-25
[4] Ooijens, S. (1999) Adding Dynamics to the Camp Model for the Calculation of Overflow Losses, Terra et Aqua 76, 12-21
[5] Koning, J. D (1977) Constant Tonnage Loading System of Trailing Suction Hopper Dredges. International Course on Modern Dredging (P. D6). The Hague, the Netherlands; Delft University of Technology & KIVI
[6] Patrick J. (2012): HTETCO Mechanical Dredging; How to Estimate the Cost of Mechanical Dredging.
[7] Miedema, S. (2009A) An Analytical Approach to the Sedimentation Process in Trailing Suction Hopper Dredger, Terra et Aqua 112, 15-25
[8] Nitonye Samson (2017), Numerical Analysis for the Design of the Fuel System of a Sea Going Tug Boat in the Niger Delta. World Journal of Engineering Research and Technology, Vol. 3, No 1, 161-177. http:// www.wjert.org
[9] Thomas E. H. (2010). Cost Estimate and Production Evaluation for Hopper Dredges. A Thesis submitted to the office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of Master of Science in Ocean Engineering.
[10] Camp, T (1936). Study of Rational Design of Settling Tanks. Sewage Works Journal 8(5), 742 -758
[11] Jan De Nul Group (2013) Dredging and Marine Works. 25- 29
[12] Nitonye, S., Adumene, S. and Howells, U.U. (2017) Numerical Design and Performance Analysis of a Tug Boat Propulsion System, Journal of Power and Energy Engineering, 5, 11, 80-98. https://doi.org/10.4236/jpee.2017.511007 http://www.scirp.org/journal/jpee
[13] Nitonye, S., & Adumene S. (2014). Numerical and experimental analysis for the stability of a 2500 tonnes Offshore Work Boat. International Journal of Applied Science and Engineering, 3 (6), 1041-1053. (http://www.ijaser.com)
[14] Lloyds Register (2014): Rules and Regulations for the Classification of Ships. Dredging and Reclamation Craft. Part 4, Chapter 12.

Keywords
Dredgers, Pumps, Self-Propelled, Power, Pipelines