1599 KB0 KB199920252024Abdulkhaev, ZokhidjonAbobakirova, ZebunisoKhusanov, YunusaliMadaliev, MurodilMirzababayeva, Saxibaletnik:37številka:67str. 137-151ISSN:0352-3551DOI:10.15292/acta.hydro.2024.08COBISSID_HOST:235656451URN:URN:NBN:SI:doc-D06R4VHEenFakulteta za gradbeništvo in geodezijoActa hydrotechnicaciklonicycloneshidrologijahydrologymatematično modeliranjemathematical modelingReynolds-averaged Navier–Stokes equationsReynoldsovo povprečene Navier-Stokesove enačbeturbulence modelsturbulenčni modeliNumerical 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 pitchCentrifugalni 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 korakaTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za gradbeništvo in geodezijo