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HYDRODYNAMICS AND ACOUSTICS

2018 ◊ Volume 1 (91) ◊ Issue 1 ◊ p. 85-98

K. V. Terletska*

* Institute of Mathematical Machines and Systems Problems of NAS of Ukraine, Kyiv, Ukraine

Energy dissipation of internal waves over underwater obstacles

Gidrodin. akust. 2018, 1(1):85-98

https://doi.org/10.15407/jha2018.01.085

TEXT LANGUAGE: Ukrainian

ABSTRACT

The paper presents the results of numerical modeling of internal solitary waves interaction with the underwater obstacles of various shapes. A good agreement of the model and laboratory experiments is demonstrated. The height, length and shape of the obstacle are shown to significantly affect the process of internal wave transformation. Energy dissipation for the wave transforming over an obstacle in the form of a semicircle or rectangle will be greater than that for wave transformation over a triangular obstacle. The energy losses increase with length of the obstacle. Thus, it is proven that the topographical effects (namely, the influence of the shape of underwater obstacles) are potentially important for estimating of energy dissipation.

KEY WORDS

solitary internal waves, underwater obstacle, interaction with a topography, energy dissipation

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