From 1 - 2 / 2
  • Wind is generated from left to right by an imposed constant horizontal pressure gradient. The initial wind field is disturbed by small random variations so as to produce a turbulent field. Withouth the perturbations, a viscous solution would be found. The numerical resolution technique used is based on finite differences, applied to a structured mesh. The Continuity and Navier-Stokes equations are solved with the well-known half time-step method, in which the Poisson equation is solved over the entire domain at each time iteration. As of 17 March 2022, the code version is DNS_2D_for_Teaching-v1.0.0. The code is written in C language. A GUI (Graphical User Interface) is available as an executable file "sdiapp.exe" that can be run under most versions of Microsoft Windows. Please just make sure to check the 'graph' box before clicking on the launch button, to have the visual experience. On the GUI, two graphs give an overview of the real time simulation. The top graph shows the 2D (x,z) vorticity, while the bottom graph shows the wind speed. The colour bars are not shown, but they are classical tables in which blue means small values, while red colours denote large values. The authors of this code version are Francis Vivat (LATMOS UMR CNRS 8190) and Denis Bourras (MIO UMR 7294). The code is distributed freely and comes with no garantees. It was mainly designed for educational purposes. Please note that the rules of use must follow the CeCILL-C FREE SOFTWARE LICENSE AGREEMENT included in the distribution. Any return is welcomed and encouraged, please contact or Citation: Vivat, F., & Bourras, D., (2023). DNS_2D_for_Education [Application].

  • This Application is a simple calculator that estimates Turbulent Air-Sea Fluxes based on input variables such as wind speed, air temperature, or relative humidity. The input variables can be easily set by hand with sliders. The present Air-Sea Flux Calculator application makes it easy to get an estimate of the fluxes at Sea of for Educational purposes The code is a simplification of the well known bulk algorithm so-called COARE 3.0 (Fairall et al. 2003). The authors of this code are Nicolas Bourras and Denis Bourras (MIO CNRS UMR 7294, Institut Méditerranéen d'Océanologie, Institut Pytheas CNRS UAR 3470, Aix-Marseille University). Citation: Bourras, N., & Bourras, D., (2023). Air-Sea flux calculator [Application].