Heat exchange in tubes with permeable walls in the presence of internal heat sources

Eroshenko, V. M.; Zaichik, L. I.; Rabovskii, V. B.

doi:10.1007/bf00861034

Cited by 3 publications

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“…The conservation equations for energy and species were modified by the introduction of velocity components from the solution of the momentum equations for laminar pipe flows with porous walls. Their work was followed by a number of investigations that accounted for injection and extraction of mass (Kinney 1968), different boundary conditions (Raithby 1971), mass transfer cooling (Peng & Yuan 1965) and internal heat sources (Eroshenko, Zaichik & Rabovskii 1980). The analysis of the flow field in the system is performed on the basis of the theory developed for swirling laminar flows.…”

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confidence: 99%

Non-premixed swirl-type tubular flames burning liquid fuels

2018

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Tubular flames represent a canonical combustion configuration that can simplify reacting flow analysis and also be employed in practical power generation systems. In this paper, a theoretical model for non-premixed tubular flames, with delivery of liquid fuel through porous walls into a swirling flow field, is presented. Perturbation theory is used to analyse this new tubular flame configuration, which is the non-premixed equivalent to a premixed swirl-type tubular burner – following the original classification of premixed tubular systems into swirl and counterflow types. The incompressible viscous flow field is modelled with an axisymmetric similarity solution. Axial decay of the initial swirl velocity and surface mass transfer from the porous walls are considered through the superposition of laminar swirling flow on a Berman flow with uniform mass injection in a straight pipe. The flame structure is obtained assuming infinitely fast conversion of reactants into products and unity Lewis numbers, allowing the application of the Shvab–Zel’dovich coupling function approach.

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confidence: 99%