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1997•Journal of Physical OceanographyOpen access

Comments on “Estimates of Kinetic Energy Dissipation under Breaking Waves”

Gerrit Burgers

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Abstract

It is noted that the results of recent experiments on the enhancement of turbulent kinetic energy (TKE) dissipation below surface waves can be stated as follows. TKE dissipation is enhanced by a factor 15Hws/z at depths 0.5Hws < z < 20Hws with respect to the wall-layer result ϵ = u3∗w/κz, where u∗w is the friction velocity in water and Hws is the significant windsea wave height. For open ocean conditions, this reduces in most cases to an enhancement factor 106u2∗w/gz ≈ u210/gz.

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It is noted that the results of recent experiments on the enhancement of turbulent kinetic energy (TKE) dissipation below surface waves can be stated as follows. TKE dissipation is enhanced by a factor 15Hws/z at depths 0.5Hws < z < 20Hws with respect to the wall-layer result ϵ = u3∗w/κz, where u∗w is the friction velocity in water and Hws is the significant windsea wave height. For open ocean conditions, this reduces in most cases to an enhancement factor 106u2∗w/gz ≈ u210/gz.

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Available abstract

It is noted that the results of recent experiments on the enhancement of turbulent kinetic energy (TKE) dissipation below surface waves can be stated as follows. TKE dissipation is enhanced by a factor 15Hws/z at depths 0.5Hws < z < 20Hws with respect to the wall-layer result ϵ = u3∗w/κz, where u∗w is the friction velocity in water and Hws is the significant windsea wave height. For open ocean conditions, this reduces in most cases to an enhancement factor 106u2∗w/gz ≈ u210/gz.

Key concepts: Dissipation, Kinetic energy, Turbulence kinetic energy, Turbulence, Breaking wave, Mechanics, Physics, Classical mechanics

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