20.500.12556/RUL-169118 Numerical study of highly efficient centrifugal cyclones Numerična študija visokoučinkovitih centrifugalnih ciklonov Centrifugal cyclones have been developed for centuries to treat process streams, but their efficiency in removing fine dust remains below 80%. The widespread use of cyclones in various industries is the result of their simplicity in design and their reliable operation. However, the process occurring inside a cyclone is a complex scientific problem that still remains unsolved within the framework of aerohydromechanics, as evidenced by the variety of cyclone designs. The current level of cyclone cleaning's efficiency for process streams does not meet sanitary standards and significantly affects the level of environmental pollution. This paper compares various configurations of centrifugal cyclones, including cyclones without screws, with a screw of a uniform pitch, and with a screw of a variable pitch to regulate the twist of the flow. Numerical simulations were performed using the Comsol Multiphysics 5.6 software package using the SST turbulence model. The obtained numerical data show that the efficiency of a cyclone with a variable screw pitch is significantly higher than that of cyclones without screws and with a screw of a uniform pitch. Centrifugalni cikloni se že stoletja razvijajo za obdelavo procesnih tokov, vendar njihova učinkovitost pri odstranjevanju drobnega prahu ostaja pod 80 %. Široka uporaba ciklonov v različnih panogah je posledica njihove preproste zasnove in zanesljivega delovanja. Proces znotraj ciklonov je zapleten znanstveni problem in v okviru aerohidromehanike ostaja nerešen, kar dokazuje raznolikost modelov. Trenutna raven učinkovitosti ciklonskega čiščenja procesnih tokov ne ustreza sanitarnim standardom in bistveno vpliva na onesnaženost okolja. Članek primerja različne konfiguracije centrifugalnih ciklonov, vključno s cikloni brez vijakov, z vijakom enakomernega koraka in z vijakom spremenljivega koraka, ki uravnava zasuk toka. Numerične simulacije so bile izvedene z uporabo programskega paketa Comsol Multiphysics 5.6 z uporabo modela turbulence SST. Dobljeni numerični podatki kažejo, da je izkoristek ciklona z vijakom spremenljivega koraka bistveno večji kot pri ciklonih brez vijakov in cikloni z vijakom enakomernega koraka. hydrology cyclones mathematical modeling turbulence models Reynolds-averaged Navier–Stokes equations hidrologija cikloni matematično modeliranje turbulenčni modeli Reynoldsovo povprečene Navier-Stokesove enačbe true false true Angleški jezik Slovenski jezik Članek v reviji 2025-05-13 10:33:01 2025-05-13 10:33:05 2025-05-14 04:01:35 0000-00-00 00:00:00 2024 0 0 Str. 137-151 no. 67 Vol. 37 Dec. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 551.51:544.272(078.7) 0352-3551 10.15292/acta.hydro.2024.08 235656451 Madaliev...-Numerical_study_of_highly_efficient_centrifugal_cyclones.pdf Madaliev...-Numerical_study_of_highly_efficient_centrifugal_cyclones.pdf 1 828BAAFEF52BF029E65D67A688356F17 32e1314688fff872579d4a2fba36e8ea6293edaf342cd1616f0d686f2420dfdd cd237722-2fd3-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=210291 https://actahydrotechnica.fgg.uni-lj.si/en/paper/a37mm 1 ad614ddc-2fd3-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=210290 Fakulteta za gradbeništvo in geodezijo Acta hydrotechnica 0 0 0