Next Article in Journal
Computational Modeling of Bubbles Growth Using the Coupled Level Set—Volume of Fluid Method
Next Article in Special Issue
A Geometric Perspective on the Modulation of Potential Energy Release by a Lateral Potential Vorticity Gradient
Previous Article in Journal
CFD Modeling of Hydrocyclones—A Study of Efficiency of Hydrodynamic Reservoirs
Previous Article in Special Issue
Soliton Turbulence in Approximate and Exact Models for Deep Water Waves
Article

Computation of Density Perturbation and Energy Flux of Internal Waves from Experimental Data

1
Service Hydrographique et Océanographique de la Marine (SHOM), 29200 Brest, France
2
Department of Meteorology, Stockholm University, 10691 Stockholm, Sweden
3
Centre National de Recherches Météorologiques (CNRM), Université de Toulouse, METEO-FRANCE, CNRS, 31100 Toulouse, France
*
Author to whom correspondence should be addressed.
Fluids 2020, 5(3), 119; https://doi.org/10.3390/fluids5030119
Received: 21 April 2020 / Revised: 3 July 2020 / Accepted: 16 July 2020 / Published: 21 July 2020
(This article belongs to the Collection Geophysical Fluid Dynamics)
We hereby present two different spectral methods for calculating the density anomaly and the vertical energy flux from synthetic Schlieren data, for a periodic field of linear internal waves (IW) in a density-stratified fluid with a uniform buoyancy frequency. The two approaches operate under different assumptions. The first method (hereafter Mxzt) relies on the assumption of a perfectly periodic IW field in the three dimensions (x, z, t), whereas the second method (hereafter MxtUp) assumes that the IW field is periodic in x and t and composed solely of wave components with downward phase velocity. The two methods have been applied to synthetic Schlieren data collected in the CNRM large stratified water flume. Both methods succeed in reconstructing the density anomaly field. We identify and quantify the source of errors of both methods. A new method mixing the two approaches and combining their respective advantages is then proposed for the upward energy flux. The work presented in this article opens new perspectives for density and energy flux estimates from laboratory experiments data. View Full-Text
Keywords: internal waves; laboratory experiments; synthetic Schlieren data; spectral methods; vertical energy flux internal waves; laboratory experiments; synthetic Schlieren data; spectral methods; vertical energy flux
Show Figures

Graphical abstract

MDPI and ACS Style

Bordois, L.; Nycander, J.; Paci, A. Computation of Density Perturbation and Energy Flux of Internal Waves from Experimental Data. Fluids 2020, 5, 119. https://doi.org/10.3390/fluids5030119

AMA Style

Bordois L, Nycander J, Paci A. Computation of Density Perturbation and Energy Flux of Internal Waves from Experimental Data. Fluids. 2020; 5(3):119. https://doi.org/10.3390/fluids5030119

Chicago/Turabian Style

Bordois, Lucie, Jonas Nycander, and Alexandre Paci. 2020. "Computation of Density Perturbation and Energy Flux of Internal Waves from Experimental Data" Fluids 5, no. 3: 119. https://doi.org/10.3390/fluids5030119

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop