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On the resolvability of the first boundary value problem for equations describing the flow of viscous incompressible mixture with a chemical reaction progress - MaRDI portal

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On the resolvability of the first boundary value problem for equations describing the flow of viscous incompressible mixture with a chemical reaction progress (Q1345672)

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scientific article; zbMATH DE number 732065
Language Label Description Also known as
English
On the resolvability of the first boundary value problem for equations describing the flow of viscous incompressible mixture with a chemical reaction progress
scientific article; zbMATH DE number 732065

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    On the resolvability of the first boundary value problem for equations describing the flow of viscous incompressible mixture with a chemical reaction progress (English)
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    30 March 1995
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    In dieser Arbeit untersucht man den Strom eines viskosen Fluidums bei Anwesenheit der termischen chemischen Reaktion in einem geschlossenen begrenzten Gebiet \(\Omega\). Es sei \(\Omega= [0, 1]\times [0, 1]\), \(\rho_ i= \rho=1\), \(i=1,\dots, n\); \(\vartheta= T/T_ 0\), \(\vartheta_ b= T_ b/ T_ 0\), \(\nu=1/\text{Re}\), \(\kappa= 1/(\text{Re}\cdot \text{Pr})\); \(\chi= 1/(\text{Re} \cdot \text{Sc})\), \(q= Q\cdot \alpha_ 0/ T_ 0\), \(L(\vartheta)= \text{const}\cdot g\cdot\vartheta\); \(\varphi (\vartheta)= \exp(- C_ 0/ \vartheta)\), \(\text{Da}= g^{-1/2} k_ 0 \exp (-C_ 0/T_ 0)\), wobei \(k_ 0\) -- Koeffizient der chemischen Reaktion, \(T_ b\) -- Anfangstemperatur der chemischen Reaktion, \(T_ 0\) -- Anfangstemperatur des Fluidums, \(Q\) -- termischer Effekt der Reaktion und Re, Pr, Sc -- Zahlen von Reynolds, Prandtl und Schmidt sind. Die Geschwindigkeit der chemischen Reaktion wird durch den Ausdruck \(W= k_ 0\cdot \rho\cdot \exp(- C_ 0/ T)\alpha\) gegeben. Dann läßt sich dieses Problem durch folgendes System \((\partial/ \partial t) u+ (u\nabla) u=- \nabla p+f+ \nu \Delta u- L(\vartheta)\), \(\text{div } u=0\), \({\partial\over \partial t} \vartheta+(u \nabla) \vartheta = \kappa \Delta\vartheta+ q \text{ Da } \varphi (\vartheta) \alpha+h\), \((\partial/ \partial t) \alpha+ (u\nabla) \alpha= \chi\Delta \alpha- \text{Da } \varphi (\vartheta) \alpha+k\) mit den Randbedingungen \(u|_{\partial \Omega}=0\), \(\vartheta|_{\partial \Omega}= \vartheta_ \Gamma\), \(\alpha|_{\partial \Omega}= \alpha_ \Gamma\), \(t\in [0, t_ 1]\) und mit den Anfangsbedingungen \(u(x,0)= u_ 0(x)\), \(\vartheta (x,0)= \vartheta_ 0 (x)\), \(\alpha (x,0)= \alpha_ 0 (x)\) beschreiben. Der Verfasser formuliert und beweist zwei Sätze über Existenz und Eindeutigkeit der Lösung des Problems.
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    existence
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    uniqueness
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