Two-dimensional hydraulic modelling of submerged river training structures
Dvodimenzionalno hidravlično modeliranje potopljenih rečnih urejevalnih objektov
- Avtorji: Davor Kvočka
- Citat: Acta hydrotechnica, vol. 33, no. 59, pp. 79-96, 2020. https://doi.org/10.15292/acta.hydro.2020.06
- Povzetek: Rečni urejevalni objekti, kot so jezbice in podkvasti usmerjevalniki toka, se pogosto uporabljajo za izboljšanje plovnih pogojev na rekah. Ti objekti so večino časa potopljeni in so lahko postavljeni pod različnimi koti glede na glavno smer rečnega toka. V tej študiji smo analizirali dva različna pristopa za dvodimenzionalno hidravlično modeliranje potopljenih jezbic in podkvastih usmerjevalnikov toka v programu MIKE 21 Flow Model FM: (i) z eksplicitnim prikazom geometrije objektov v batimetriji rečnega kanala (tj. batimetrični pristop) in (ii) z uporabo »jezbičnega« podmrežnega modula, kjer se pretok mimo konstrukcije izračuna z uporabo empirično določenega koeficienta pretoka (tj. pristop z uporabo jezbičnega modula). Modelne rezultate smo primerjali s teoretičnimi in empiričnimi študijami kakor tudi s terenskimi opazovanji in meritvami. Dobljeni rezultati kažejo, da je batimetrični pristop ustreznejša metoda za simulacijo pretežno potopljenih rečnih urejevalnih objektov. Vseeno je priporočljivo tovrstne modele uporabljati le za splošno ovrednotenje potencialnih inženirskih rešitev. Za podrobnejšo analizo potencialne tehnične rešitve je priporočljiva uporaba kompleksnejših modelov, kot so tridimenzionalni hidrodinamični modeli.
- Ključne besede: hidravlično modeliranje, rečni urejevalni objekti, rečno inženirstvo, podkvasti usmerjevalniki toka, tok preko potopljenega preliva
- Polno besedilo: a33dk.pdf
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