Topic
Laminar flow reactor
About: Laminar flow reactor is a research topic. Over the lifetime, 2353 publications have been published within this topic receiving 54801 citations.
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TL;DR: In this paper, the Navier-Stokes equations are still valid for the laminar flow of deionized water in smooth silicon microchannels having hydraulic diameter as small as 25.9 μm.
284 citations
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01 Jan 1951
261 citations
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TL;DR: In this article, the stability of a steady, axisymmetric, laminar, primary flow composed of two fluids flowing concentrically in a straight circular tube is investigated by the method of small perturbations.
Abstract: The stability of a steady, axisymmetric, laminar, primary flow composed of two fluids flowing concentrically in a straight circular tube is investigated by the method of small perturbations. Both asymmetric and axisymmetric disturbances to the primary flow are considered. It is demonstrated that, regardless of the size of the Reynolds number, no situations are encountered for which the primary flow is stable to both types of disturbances, simultaneously. The primary cause of instability is found to be the difference in viscosities of the two fluids.
259 citations
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TL;DR: In this article, a flat bubble column with rectangular cross-section and essentially two-dimensional flow structure was studied in terms of gas-liquid bubble flow and the experimental results were compared with numerical simulations based upon the dynamic laminar 2D two-phase Euler-Euler model presented in Part I.
249 citations
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TL;DR: In this paper, the authors investigated the displacement speed of a curved flame in a non-uniform flow field, and showed that three different mechanisms affect the displacement of a curve flame in such a flow field: a chemical mechanism associated with the expansion of the reaction zone structure, a hydrodynamic mechanism due to isothermal area modification by lateral flow divergence, and a linear flow divergence.
Abstract: Flame surface curvature is a significant geometrical parameter that affects the structure and propagation of premixed laminar and turbulent flames. In this study, the flame tip of a two-dimensional laminar Bunsen burner is investigated using a quasi-one dimensional model, direct numerical simulations and experimental results. The laminar flame tip is a simple prototype of curved flamelets embedded in a turbulent flow field. It is shown that two characteristic flame speeds are necessary to give a local description of a given flamelet: the consumption speed associated with the structure of the reaction zone, and the displacement speed of the flame front relative to the unburned flow. The quasi-one dimensional model shows that three different mechanisms affect the displacement speed of a curved flame in a non-uniform flow field: a chemical mechanism associated with the expansion of the reaction zone structure, a hydrodynamic mechanism due to isothermal area modification by lateral flow divergence an...
247 citations