Rigorous upscaling of rough boundaries for reactive flows

K. Kumar, M.H.B. van Helvoort, I.S. Pop

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)

Abstract

We consider a mathematical model for reactive flow in a channel having a rough (periodically oscillating) boundary with both period and amplitude e. The ions are being transported by the convection and diffusion processes. These ions can react at the rough boundaries and get attached to form the crystal (precipitation) and become immobile. The reverse process of dissolution is also possible. The model involves non-linear and multi-valued rates and is posed in a fixed geometry with rough boundaries. We provide a rigorous justification for the upscaling process in which we define an upscaled problem defined in a simpler domain with flat boundaries. To this aim, we use periodic unfolding techniques combined with translation estimates. Numerical experiments confirm the theoretical predictions and illustrate a practical application of this upscaling process. Keywords: Reactive flows; rough boundaries; homogenization.
Original languageEnglish
Pages (from-to)623-644
Number of pages22
JournalZeitschrift für Angewandte Mathematik und Mechanik
Volume94
Issue number7-8
DOIs
Publication statusPublished - 2014

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Upscaling
Rough
Ions
Dissolution
Mathematical models
Crystals
Geometry
Unfolding
Homogenization
Justification
Experiments
Diffusion Process
Convection
Nonlinear Model
Reverse
Crystal
Numerical Experiment
Mathematical Model
Prediction
Estimate

Cite this

Kumar, K. ; van Helvoort, M.H.B. ; Pop, I.S. / Rigorous upscaling of rough boundaries for reactive flows. In: Zeitschrift für Angewandte Mathematik und Mechanik. 2014 ; Vol. 94, No. 7-8. pp. 623-644.
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Rigorous upscaling of rough boundaries for reactive flows. / Kumar, K.; van Helvoort, M.H.B.; Pop, I.S.

In: Zeitschrift für Angewandte Mathematik und Mechanik, Vol. 94, No. 7-8, 2014, p. 623-644.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Pop, I.S.

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