Napredna pretraga

## The relevance of turbulent mixing in estuarine numerical models for two-layer shallow water flow

Krvavica, Nino; Kožar, Ivica; Ožanić, Nevenka
The relevance of turbulent mixing in estuarine numerical models for two-layer shallow water flow // Coupled Systems Mechanics, 7 (2018), 1; 95-109 doi:10.12989/csm.2018.7.1.095 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 899913 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
The relevance of turbulent mixing in estuarine numerical models for two-layer shallow water flow

Autori
Krvavica, Nino ; Kožar, Ivica ; Ožanić, Nevenka

Izvornik
Coupled Systems Mechanics (2234-2184) 7 (2018), 1; 95-109

Ključne riječi
turbulent mixing ; entrainment ; two-layer flow ; finite volume method ; shallow water flow ; numerical model ; estuaries

Sažetak
The relevance of turbulent mixing in estuarine numerical models for stratified two-layer shallow water flows is analysed in this paper. A one-dimensional numerical model was developed for this purpose by extending an immiscible two-layer model with an additional source term, which accounts for turbulent mixing effects, namely the entrainment of fluid from the lower to the upper layer. The entrainment rate is quantified by an empirical equation as a function of the bulk Richardson number. A finite volume method based on an approximated Roe solver was used to solve the governing coupled system of partial differential equations. A comparison of numerical results with and without entrainment is presented to illustrate the influence of entrainment on both the salt-water intrusion length and lower layer dynamics. Furthermore, one example is given to demonstrate how entrainment terms may help to stabilize the numerical scheme and prevent a possible loss of hyperbolicity. Finally, the model with entrainment is validated by comparing the numerical results to field measurements.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

Ustanove:
Građevinski fakultet, Rijeka

Profili:

Nevenka Ožanić (autor)

Nino Krvavica (autor)

Ivica Kožar (autor)

#### Citiraj ovu publikaciju:

Krvavica, Nino; Kožar, Ivica; Ožanić, Nevenka
The relevance of turbulent mixing in estuarine numerical models for two-layer shallow water flow // Coupled Systems Mechanics, 7 (2018), 1; 95-109 doi:10.12989/csm.2018.7.1.095 (međunarodna recenzija, članak, znanstveni)
Krvavica, N., Kožar, I. & Ožanić, N. (2018) The relevance of turbulent mixing in estuarine numerical models for two-layer shallow water flow. Coupled Systems Mechanics, 7 (1), 95-109 doi:10.12989/csm.2018.7.1.095.
@article{article, author = {Krvavica, Nino and Ko\v{z}ar, Ivica and O\v{z}ani\'{c}, Nevenka}, year = {2018}, pages = {95-109}, DOI = {10.12989/csm.2018.7.1.095}, keywords = {turbulent mixing, entrainment, two-layer flow, finite volume method, shallow water flow, numerical model, estuaries}, journal = {Coupled Systems Mechanics}, doi = {10.12989/csm.2018.7.1.095}, volume = {7}, number = {1}, issn = {2234-2184}, title = {The relevance of turbulent mixing in estuarine numerical models for two-layer shallow water flow}, keyword = {turbulent mixing, entrainment, two-layer flow, finite volume method, shallow water flow, numerical model, estuaries} }
@article{article, author = {Krvavica, Nino and Ko\v{z}ar, Ivica and O\v{z}ani\'{c}, Nevenka}, year = {2018}, pages = {95-109}, DOI = {10.12989/csm.2018.7.1.095}, keywords = {turbulent mixing, entrainment, two-layer flow, finite volume method, shallow water flow, numerical model, estuaries}, journal = {Coupled Systems Mechanics}, doi = {10.12989/csm.2018.7.1.095}, volume = {7}, number = {1}, issn = {2234-2184}, title = {The relevance of turbulent mixing in estuarine numerical models for two-layer shallow water flow}, keyword = {turbulent mixing, entrainment, two-layer flow, finite volume method, shallow water flow, numerical model, estuaries} }

#### Časopis indeksira:

• Web of Science Core Collection (WoSCC)
• Emerging Sources Citation Index (ESCI)

#### Citati:

Contrast
Increase Font
Decrease Font
Dyslexic Font