This report describes an experimental study of the interaction of monochromatic waves and an ebb current in and near a shallow entrance channel. Laboratory experiments were performed in a three-dimensional basin with a 1 vertical (1V) on 30 horizontal (30H) fixed-bed slope. Two entrance channel configurations were tested: one with a 1V on IH side slope and the other with vertical sides. Both had equal cross-sectional areas and were 1-m wide, 10-cm deep, and 5.5-m long. Four small amplitude waves were generated using the directional spectral wave generator (DSWG). These waves had wave periods of 0.75 and 1.50 sec, directions of 0 deg and 20 deg (relative to normal to the DSWG), and wave heights of 5.0 cm. Steady ebb currents of 10, 20, and 30 cm/sec were generated using a 0.16-m3 pump. Measurements were made with capacitance wave gages and triaxial ultrasonic current meters in a 5-m by 6-m area. The six cross-shore transects had seven gages with a 1-m spacing between gages. A total of 300 sec of data was collected for four wave-only, three current-only, and twelve wave-current interaction tests for each of the two entrance channel configurations. Zero-downcrossing and spectral analysis parameters are reported. Plots of normalized wave height versus water depth are given. Current vector maps for each case are also presented.


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    Title :

    Experimental Study of Monochromatic Wave-Ebb Current Interaction. Volume I: Main Text and Appendix A



    Published in:

    Miscellaneous Paper ; CERC-92-9 v.1


    Publication date :

    1992


    Size :

    2363878


    Type of media :

    Report


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :


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