Travelling chemical waves and complex spatiotemporal patterns in a cross-flow reaction-diffusion-convection system with an exothermic reaction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F03%3A00007606" target="_blank" >RIV/60461373:22340/03:00007606 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Travelling chemical waves and complex spatiotemporal patterns in a cross-flow reaction-diffusion-convection system with an exothermic reaction

Popis výsledku v původním jazyce

We study dynamics of moving spatiotemporal patterns in a tubular reactor with a continuous supply of reactants along the reactor (cross-flow) is modelled and analyzed by using a simple first order thermokinetic reaction. We show that in a convective system of finite length with no flux boundary conditions travelling pulse and front waves can exist as well as complex periodic and nonperiodic spatiotemporal travelling patterns. A detailed examination of these complex dynamics reveals subtle structures which can be attributed to the presence of convective instabilities. The cross-flow reactor can display very complex dynamics also in the absence of convection. A remarkable pattern occurring both in the convective and nonconvective systems is a front moving back and forth in the reactor forming a zig-zag pattern. This involves a reflection of the front at the boundary which is associated with a transformation from one kind of front to another.

Název v anglickém jazyce

Travelling chemical waves and complex spatiotemporal patterns in a cross-flow reaction-diffusion-convection system with an exothermic reaction

Popis výsledku anglicky

We study dynamics of moving spatiotemporal patterns in a tubular reactor with a continuous supply of reactants along the reactor (cross-flow) is modelled and analyzed by using a simple first order thermokinetic reaction. We show that in a convective system of finite length with no flux boundary conditions travelling pulse and front waves can exist as well as complex periodic and nonperiodic spatiotemporal travelling patterns. A detailed examination of these complex dynamics reveals subtle structures which can be attributed to the presence of convective instabilities. The cross-flow reactor can display very complex dynamics also in the absence of convection. A remarkable pattern occurring both in the convective and nonconvective systems is a front moving back and forth in the reactor forming a zig-zag pattern. This involves a reflection of the front at the boundary which is associated with a transformation from one kind of front to another.

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GA201%2F02%2F0844" target="_blank" >GA201/02/0844: Metody numerické analýzy a algoritmy v nelineární dynamice chemických a biologických systémů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of International Symposium Topical Problems of NWP, Nizhny Novgorod, Russia, 6. -12.9. 2003

ISBN

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ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

62-63

Název nakladatele

Institute of Applied Physics, RAS

Místo vydání

Nizhny Novgorod

Místo konání akce

Nizhny Novgorod, Rusko

Datum konání akce

6. 9. 2003

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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