MARINE 2023

Improved methodology for estimating the drag penalty due to hull roughness: Part I current challenges, roadblocks and proposed solutions.

  • Hutchins, Nicholas (University of Melbourne)
  • Monty, Jason (University of Melbourne)
  • Will, Jelle (University of Melbourne)
  • Aliman, Isnain (University of Melbourne)
  • Nugroho, Bagus (University of Melbourne)
  • Utama, I Ketut (Institut Teknologi Sepuluh Nopember)
  • Suastika, I Ketut (Institut Teknologi Sepuluh Nopember)
  • Hendriyadi, Hendriyadi (PT Samudera Indonesia)
  • Mulia, Trisnadi (PT Samudera Indonesia)

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There exists an extensive literature on turbulent boundary layers developing over rough surfaces, dating back almost 90 years to the seminal work of Nikuradse (1933}. This problem is pertinent to ship operations where fouling on the hull can lead to very large increases in the skin friction drag coefficient (>80%, see Schultz et al. 2011). However, current engineering approaches to estimate this drag penalty face numerous challenges / roadblocks which influence the efficacy of these methods. Part I of this talk will discuss these challenges and introduce a campaign of field and laboratory measurements that can redress these issues. Part II will present preliminary results.