OP-II-3

PP-I-12computer simulation. Another main criterion was the isolation of ethane-ethylenemixture from the reactors walls and optical windows.The main feature of the computer simulation of these processes is a complexproblem of CFD modeling with chemical reactions modeling and laser energyconsumption of ethylene in gas mixture factor. Chemical reactions are flowing ingrowth of laser energy absorption conditions and with the growth of ethylene contentin gas mixture. Special software module was written for the FLUENT mathematicalmodel adaption for these conditions.Results of computer simulation of processes in reactor [2] are closed to theexperiments. Compared results of the computer simulation and experimental resultsare received for the room temperature conditions. The hydrocarbons mass fractionnear the walls was 15% which corresponds to 5% ethylene mass fraction in ethaneethylenegas mixture. The hydrocarbons mass fraction at the center of the reactionzone was up to 60%vol. at the same time.There are some differences in gas flows between room temperature conditionsand a laser energy absorption condition has been showed for the reactor [1]. Massfraction of the ethylene near the optical windows was ~3% and at the center ofreaction zone was 20% at the room temperature conditions. Mass fraction of theethylene from the optical windows to the border of reaction zone was ~2%vol. and atthe center of reaction zone was 15-20% in case of laser energy absorption scheme.Gas flows in room temperature conditions and with laser energy absorption byethylene in chemical reactors has been showed. The possibility of compact reactionzone generation for the endothermic processes in flowing reactors with isolation ofwalls and optical windows from the pollution by reactants has been described.References[1]. [V.N. Snytnikov, T.I. Mischenko, Vl.N. Snytnikov, I.G. Chernykh. Physical and chemical processesin flowing reactors using radiation energy (in print).[2]. V.N. Snytnikov, T.I. Mischenko, Vl.N. Snytnikov, I.G. Chernykh. A reactor for the study ofhomogeneous processes using laser radiation energy.// Chemical Engineering Journal. 2009.150. pp. 231-236.[3]. FLUENT. http://www.fluent.comAcknowledgementsThe content presented in this paper was partially supported by the Russian Foundationfor Basic Research (grant No. 08-01-00615); SB RAS integration programs No. 40, 26.242