EXPRESSION FOR INFLUENCES OF OPPOSING CURRENT ON WAVE BREAKING OF SHOALING WAVE ON UNIFORM SLOPE.

Opposing currents affect the breaking processes of shoaling waves on uniform slopes. The wave breaking conditions depend on the normalize discharge per unit width of the opposing current as well as on the deep water wave steepness and uniform slope. Experiments were conducted to examine these effects on the breaker depth (or height) in the presence of the opposing current, as compare to the breaker depth (or height) in the presence of the opposing current, as compare to the breaker depth (or height) in the absence of the current. New empirical parameter was proposed to express the ratio of the breaker depth (or height) with and without the opposing current. The proposed new parameter accounts for the combined effects of the opposing current, deepwater wave steepness and uniform slope. The measured ratios of the breaker depth (or height) were shown to be expressed as a function of the proposed parameter.