Validation of a new generation system for bottom boundary layer beneath solitary wave

Hitoshi Tanaka*, Bambang Winarta, Suntoyo, Hiroto Yamaji

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Understanding of sea bottom boundary layer characteristics, especially bottom shear stress acting on the sea bed, is an important step needed in sediment transport modeling for practical application purposes. In the present study, a new generation system for bottom boundary layer under solitary wave is proposed. Applicability of this system is examined by comparing measured and numerical solution velocities. Moreover, transitional behavior from laminar to turbulence was investigated. It is concluded that the critical Reynolds number in the experiments shows good agreement with DNS result of Vittori and Blondeaux (2008) and laboratory data of Sumer et al. (2010), indicating validity of the generation system. Since the present generation system enables continuous measurement to obtain ensemble averaged quantities, it can be effectively utilized for future experimental studies on solitary wave boundary layers, including sediment transport experiments with movable bed.

Original languageEnglish
Pages (from-to)46-56
Number of pages11
JournalCoastal Engineering
Issue number1
Publication statusPublished - Jan 2012


  • Boundary layer
  • Generation system
  • Solitary wave
  • Transition
  • Turbulent flow


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