scholarly journals EXPERIMENTAL STUDY ON MUTUAL TURBULENCE STRUCTURES ACROSS AIR-WATER INTERFACE IN WIND-INDUCED WATER WAVES BY SIMULTANEOUS LDA MEASUREMENTS

2002 ◽  
Vol 46 ◽  
pp. 547-552
Author(s):  
Iehisa NEZU ◽  
Keisuke YOSHIDA ◽  
Daisuke IKEDA
Keyword(s):  
Experimental Study ◽  
Water Waves ◽  
Water Interface ◽  
Turbulence Structures ◽  
Air Water Interface

Toward a Microscopic Model of Light Absorbing Dissolved Organic Compounds in Aqueous Environments: Theoretical and Experimental Study

2021 ◽  
Author(s):  
Natalia V. Karimova ◽  
Michael R Alves ◽  
Man Luo ◽  
Vicki Grassian ◽  
Robert Benny Gerber
Keyword(s):  
Experimental Study ◽  
Organic Compounds ◽  
Water Systems ◽  
Microscopic Model ◽  
Water Interface ◽  
Marine Environments ◽  
Macromolecular Systems ◽  
Aqueous Environments ◽  
Air Water Interface ◽  
Dissolved Organic Compounds

Water systems often contain complex macromolecular systems that absorb light. In marine environments, these light absorbing components are often at the air-water interface and can participate in the chemistry of...

PIV studies on turbulence structure in air/water interface with wind-induced water waves

2010 ◽  
Vol 22 (S1) ◽  
pp. 338-342 ◽  
Author(s):  
Michio Sanjou ◽  
Iehisa Nezu ◽  
Akihiro Toda
Keyword(s):  
Water Waves ◽  
Turbulence Structure ◽  
Water Interface ◽  
Air Water Interface

scholarly journals TURBULENCE STRUCTURES IN AIR-WATER INTERFACE WITH WIND SHEAR

1999 ◽  
Vol 43 ◽  
pp. 413-418
Author(s):  
Iehisa NEZU ◽  
Tadanobu NAKAYAMA ◽  
Rie INOUE
Keyword(s):  
Wind Shear ◽  
Water Interface ◽  
Turbulence Structures ◽  
Air Water Interface

scholarly journals Wind-Driven Waves on the Air-Water Interface

Fluids ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 122
Author(s):  
Harvey Segur ◽  
Soroush Khadem
Keyword(s):  
Free Surface ◽  
Water Waves ◽  
Wave Train ◽  
Periodic Waves ◽  
Water Interface ◽  
Local Dynamics ◽  
Air Water Interface ◽  
The Waves ◽  
Two Fluid ◽  
Insight Into

An ocean swell refers to a train of periodic or nearly periodic waves. The wave train can propagate on the free surface of a body of water over very long distances. A great deal of the current study in the dynamics of water waves is focused on ocean swells. These swells are typically created initially in the neighborhood of an ocean storm, and then the swell propagates away from the storm in all directions. We consider a different kind of wave, called seas, which are created by and driven entirely by wind. These waves typically have no periodicity, and can rise and fall with changes in the wind. Specifically, this is a two-fluid problem, with air above a moveable interface, and water below it. We focus on the local dynamics at the air-water interface. Various properties at this locality have implications on the waves as a whole, such as pressure differentials and velocity profiles. The following analysis provides insight into the dynamics of seas, and some of the features of these intriguing waves, including a process known as white-capping.

Response of gravity water waves to wind excitation

1969 ◽  
Vol 35 (4) ◽  
pp. 657-675 ◽  
Author(s):  
James B. Bole ◽  
En Yun Hsu
Keyword(s):  
Wave Energy ◽  
Water Waves ◽  
Velocity Profiles ◽  
Primary Objective ◽  
Water Interface ◽  
Mean Velocity ◽  
Wave Growth ◽  
Wind Speeds ◽  
Wave Channel ◽  
Air Water Interface

The primary objective of this work was to study the response of gravity water waves to wind excitation and, in particular, the applicability of the Miles inviscid shear-flow theory of gravity wave growth, by conducting experiments in a laboratory wind-wave channel under conditions approximating the assumptions of the mathematical model. Mechanically generated wave profiles subjected to wind action were measured with capacitance wire sensors and wave energy was calculated at seven stations spaced at 10ft. intervals along the channel test section. Waves varied in length from about 2·5 to 6·5 ft. and maximum wind speeds ranged from 12 to 44 ft./sec. Vertical mean air velocity profiles were taken at six stations in the channel, fitted near the air-water interface with semi-logarithmic profiles, and used in a stepwise computation of theoretical wave growth. The results show that the measured wave energy growth is exponential but considerably larger than the growth predictions of Miles's theory. Derived experimental values of the phase-shifted pressure component β are greater than theoretical values by a factor varying from 1 to 10, with a mean of about 3. Wind mean velocity profiles appear to be closely logarithmic near the air-water interface. Wind-generated ripples superposed on mechanically generated waves created a rough water surface with standard deviation larger, in all cases, than the respective critical-layer thickness.

An experimental study on turbulent coherent structures near a sheared air-water interface

1999 ◽  
Vol 15 (4) ◽  
pp. 289-298 ◽  
Author(s):  
Wang Shuangfeng ◽  
Jia Fu ◽  
Niu Zhennan ◽  
Wu Zhangzhi
Keyword(s):  
Experimental Study ◽  
Coherent Structures ◽  
Water Interface ◽  
Turbulent Coherent Structures ◽  
Air Water Interface
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