20.500.12556/DKUM-26266 Upravljanje procesa izgorevanja v Rijkejevi cevi Control of combustion process in Rijke tube Članek obravnava upravljanje neustaljenih nihanj avtonomnega nihala z eno prostostno stopnjo, kakršna se pojavljajo v procesu izgorevanja v Rijkejevi cevi. Upravljanje procesa izgorevanja v Rijkejevi cevi modeliramo z van der Polovim nihalom. Za obravnavo neustaljenih nihanj je v članku uporabljena razširjena Lindstedt-Poincarejeva (EL-P) metoda z več časovnimi skalami. S pomočjo te metode ugotovimo, da so neustaljena nihanja skoraj periodična, amplituda in faza nihanj pa funkciji počasne časovne skale. Brez upravljanja dotoka goriva je proces izgorevanja nestabilen in samovzbujena nihanja težijo k limitnemu ciklu. Z upravljanjem dotoka goriva zadušimo samovzbujena nihanja, s čemer dosežemo asimptotično stabilno stanje. Paper treats the control of nonstationary oscillations of autonomous single degree of freedom oscillator as arises in the combustion process of Rijke tube. The control of combustion process in Rijke tube is modelled by the van der Pol oscillator. For a study of nonstationary oscillations, the Extended Lindstedt-Poincare method with multiple time scales is used in the paper. By applying the EL-P method, it is ascertained, that nonstationary oscillations are almost periodic with amplitude and phase, which are functions of the slow time scale. Without control of the fuel influx, the combustion process is unstable and self excited oscillations tend to approach the limit cycle. By applying the fuel control, the self excited oscillations are quenched to reach the asimptotic stable state. avtonomno nihalo neustaljeno nihanje zgorevanje Rijkejeva cev numerični rezultati autonomous singel degree oscillator nonstationary osscilations combustion Rijke tube numerical results true false false Slovenski jezik Angleški jezik Neznano 2012-05-31 12:20:45 2012-05-31 12:20:49 2022-04-15 03:41:15 2024-01-03 03:23:46 2008 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 531.53:539.913 12631062 URN:SI:UM:DK:NNYBXRUV http://www.drustvozamehaniko.si/zbornik/ZbornikKD2008.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=35228 Fakulteta za strojništvo 0 0 0