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Overtopping for Rubble Mound Breakwater Armoured with the New Block-Rakuna-IV

Huong Giang. Le Thi
Hydraulic Engineering Faculty, Vietnam Maritime University Haiphong, Vietnam

Abstract—The paper presents the physic model test results on wave flume about the ability of overtopping reduction of new amour unit-Rakuna IV through roughness factor γr. The results from 58 tests for Rakuna IV and Tetrapod showed that the wave overtopping reduction factor of this armour unit is not a constant but depends upon the breaker index  m-1.0

Index Terms—rubble mound breakwater, overtopping, roughness factor, amour unit

Cite: Huong Giang. Le Thi, "Overtopping for Rubble Mound Breakwater Armoured with the New Block-Rakuna-IV," International Journal of Structural and Civil Engineering Research, Vol. 8, No. 1, pp. 40-45, February 2019. doi: 10.18178/ijscer.8.1.40-45