HYDRAULIC RESISTANCE OP ARTIFICIAL CONCRETE BLOCKS

Mubuo Shuto, Hiroshi Hashimoto

Abstract


Theoretical analysis and experiments are made to clarify the mechanism of reducing the wave energy by the block structures In order to express the hydraulic reistance of three different kinds of blocks, three different models are proposed The hydraulic radius and the porosity of the block structures are essentially important factors m the expression of the hydraulic characteristics of the block structures It is recommended, from experimental results, to carry out the hydraulic experiments by using blocks heavier than at least 500 gr Resistance coefficients obtained m the steady and oscillatory flows show almost no difference.

Keywords


hydraulic resistance; concrete block

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