Calibration of Three-dimensional Model PCFLOW3D ‒ A Comparison with Measurements from the Yatsushiro Sea and the Sea of Japan
Umerjanje tridimenzionalnega modela PCFLOW3D ‒ Primerjava z meritvami v morju Yatsushiro in Japonskem morju
- Avtorji: Rudi Rajar, Matjaž Četina
- Citat: Acta hydrotechnica, vol. 30, no. 52, pp. 37-50, 2017.
- Povzetek: PCFLOW3D je tridimenzionalni numerični model za simulacijo hidrodinamičnih tokov in za prenos in širjenje onesnažil. Ker je prvi – hidrodinamični ‒ del zelo pomemben za zanesljivo simulacijo transportno/disperzijskih procesov, smo ga razvijali več let in ga v vsaki fazi umerjali in preverjali. V tem prispevku opisujemo dva primera, kjer je bila možna primerjava z rezultati meritev, in opisujemo nekaj dopolnitev modela, potrebnih za zanesljivo simulacijo nekaterih hidrodinamičnih pojavov. V prvem primeru (primer A) smo izkoristili razpoložljive, zelo detajlne rezultate meritev v morju Yatsushiro (Japonska). Zaradi izredno velikih in spremenljivih hitrosti tokov smo morali vključiti turbulentni model Smagorinsky, da smo dobili sprejemljivo ujemanje izračunov z rezultati meritev. V drugem primeru (primer B) smo simulirali cirkulacijo v Japonskem morju, kjer spremembe gostote vode zaradi spremenljive temperature in slanosti pomembno vplivajo na hitrosti toka. Model smo morali dopolniti s t. i. topografsko napetostjo (angl. topographic stress). V obeh primerih smo dosegli dobro ujemanje z rezultati meritev. V drugem primeru opisujemo tudi simulacijo transporta in disperzije radioaktivnih onesnažil v Japonskem morju.
- Ključne besede: tridimenzionalni numerični hidrodinamični model, meritve tokov, radioaktivna onesnažila, morje Yatsushiro, Japonsko morje
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