TY  - JOUR
TT  - 3D modeling of rivermouth hydrodynamics: Mix and stratified flow cases
AU  - Çelik, Ahmet Ozan
AU  - Kiriççi, Volkan
PY  - 2017
DA  - October
DO  - 10.25092/baunfbed.340344
JF  - Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi
JO  - BAUN Fen. Bil. Enst. Dergisi
PB  - Balıkesir Üniversitesi
WT  - DergiPark
SN  - 1301-7985
SP  - 21
EP  - 34
VL  - 19
IS  - 2
KW  - Dere ağzı
KW  - haliç
KW  - HAD
KW  - karışım
KW  - tabakalı akım
N2  - The design stages in river restoration work may encountersituations such as mix or stratified flow regions, river mouths or estuarieswhere conventional methods can not characterize the flow or be effective. Thisis due to the fact that one dimentional empirical equations fail to representthe physics of this phenomenon. That is, for instance for a stratified flownear a river mouth, the fresh water flowing on the top layer (above the densersaline water) will not be in contact with the bed, as a result the bedroughness will no longer be effective in design calculations of channelcross-section. Consequently, the back calculations of channel sizing from thehydraulic radius in the Manning equation will not be realistic. In suchineffective cases the calculations may result in unnecessarily large orinadequate cross sections. This leads to irreversible losses. Riva River can beconsidered as an example to such river mouths. In this study, the saline-freshwater mix region near the mouth of the questioned river has been modelled usingrealistic cross sections and discharge values. The problematic approaches havebeen identified using 3 different benchmark scenarios. The comments regardingthe detailes of the employed computational fluid dynamics model have been alsopresented.
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UR  - https://doi.org/10.25092/baunfbed.340344
L1  - https://dergipark.org.tr/tr/download/article-file/344897
ER  -