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Steady-state performance of an infinitely fast reaction in a three-dimensional open Stokes flow by S. Cerbelli; F. Garofalo; M. Giona is a Engineering article available to read on EtoBox.
What is Steady-state performance of an infinitely fast reaction in a three-dimensional open Stokes flow about?
We investigate the steady-state performance of a single irreversible mixing-controlled reaction between segregated reactant streams entering the annular gap between coaxial cylinders that can rotate independently. The three-dimensional Stokes flow results from the superposition of a pressure-driven Poiseuille flow along the mixer axis, and a cross-sectional Couette flow generated by the steady rotation of the inner and outer cylinders. Flow protocols associated with different geometries and different conditions of the rotating cylinders are considered. For each protocol, we analyze the axial behavior of reaction yield as a function of the Peclet number, quantifying the relative importance of convective vs. diffusive transport mechanisms. Following a well-established approach developed in the context of closed bounded flows, we connect the steady-state reactor performance with the spectral (eigenvalue-eigenfunction) structure of the advection-diffusion operator restricted to the system cross-section. For slim channels, this approach indicates that reaction performance is controlled by the real part, say -( > 0), of the dominant eigenvalue of the advection-diffusion operator, and the
Who reads Steady-state performance of an infinitely fast reaction in a three-dimensional open Stokes flow?
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- Author
- S. Cerbelli; F. Garofalo; M. Giona
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0009-2509)
- Published
- 2008
- Language
- EN
- Field
- Engineering (Physical Sciences)