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Surface shear stress dependence of gas transfer velocity parameterizations using DNS

Sam Fredriksson ; Lars Arneborg ; Håkan Nilsson (Institutionen för tillämpad mekanik, Strömningslära) ; R.A. Handler
Journal of Geophysical Research: Oceans (2169-9275). Vol. 121 (2016), 10, p. 7369-7389.
[Artikel, refereegranskad vetenskaplig]

Air-water gas-exchange is studied in direct numerical simulations (DNS) of free-surface flows driven by natural convection and weak winds. The wind is modeled as a constant surface-shear-stress and the gas-transfer is modeled via a passive scalar. The simulations are characterized via a Richardson number Ri=Bν/u*4 where B, ν, and u* are the buoyancy flux, kinematic viscosity, and friction velocity respectively. The simulations comprise 0Ric or kg=Ashearu*Sc-n, Ri

Nyckelord: Air-sea gas exchange , Direct numerical simulations , Gas transfer velocity , Heat flux , Natural convection , Surface cooling , Turbulence , Wind



Denna post skapades 2016-10-28. Senast ändrad 2016-11-22.
CPL Pubid: 244447

 

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Institutioner (Chalmers)

Institutionen för marina vetenskaper (GU)
Institutionen för tillämpad mekanik, Strömningslära

Ämnesområden

Hållbar utveckling
Klimatforskning
Oceanografi

Chalmers infrastruktur

C3SE/SNIC (Chalmers Centre for Computational Science and Engineering)