SwePub
Sök i LIBRIS databas

  Utökad sökning

WFRF:(Stenström Petter)
 

Sökning: WFRF:(Stenström Petter) > Exchange flows in e...

Exchange flows in estuaries and archipelagos

Stenström, Petter, 1971- (författare)
KTH,Mark- och vattenteknik
 (creator_code:org_t)
ISBN 9172835273
Stockholm : Mark och vatten, 2003
Engelska x, 28 s.
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)
Abstract Ämnesord
Stäng  
  • Different aspects of the exchange of water and tracersbetween adjacent coastal basins, and between the coast and thesea, are addressed. Deviations from the inviscid hydraulicprediction of flow rates and interface heights in maximaltwo-layer exchange flows due to viscous effects are quantifiedby means of non-hydrostatic, three-dimensional numericalmodeling. Simulations are made for different strait geometriesand with a time-dependent barotropic flow to determine when andwhere vertical mixing and the resulting recirculation oftracers preferentially take place (Paper I). Non-hydrostaticthree-dimensional numerical modeling is also performed to studythe variability in circulation and stratification in a tidallyinfluenced estuary. In particular, two processes that act todecrease the rate of flushing of tracers are addressed–turbulent mixing and secondary circulation, i.e. circulationperpendicular to the longitudinal estuary axis (Paper II).Schemes for modeling water exchange in an archipelago, i.e. ina complex system of basins and interconnecting straits, arediscussed (Paper III). Problems relating to Bernoulliaspiration of dense water from below the sill crest,multi-layer stratification, and to some extent rotationalcontrol in parallel straits are addressed.Methodological aspects of both three dimensional numericalmodeling and of solution of the inviscid two-layer straitexchange problem are discussed. In the three-dimensionalnumerical modeling two issues are central: (i) theimplementation of open boundary conditions that allow a meanflow to be forced from one of the boundaries, while at the sametime let barotropic and baroclinic waves be radiated out of thedomain with minimum reflection, and (ii) the implementation ofa subgrid closure scheme to calculate the vertical eddyviscosity and diffusivity coefficients locally fromresolved-scale shear and stratification.

Publikations- och innehållstyp

vet (ämneskategori)
dok (ämneskategori)

Hitta via bibliotek

Till lärosätets databas

Hitta mer i SwePub

Av författaren/redakt...
Stenström, Pette ...
Av lärosätet
Kungliga Tekniska Högskolan

Sök utanför SwePub

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy