Szczegóły publikacji
Opis bibliograficzny
Experimental validation of the transport phenomena in T-shape channel flow / M. JASZCZUR, R. NOWAK, J. S. SZMYD, M. BRANNY, W. WODZIAK // Journal of Physics. Conference Series ; ISSN 1742-6588. — 2012 — vol. 395 iss. 1, s. 1–9. — Bibliogr. s. 9, Abstr. — Eurotherm 2012 : 6th European Thermal Sciences Conference : [September 04–07, 2012, Poitiers, France] / [eds.] Daniel Petit, Christophe Le Niliot. — [S. l.] : IOP Publishing Ltd., [2012]
Autorzy (5)
Dane bibliometryczne
| ID BaDAP | 70616 |
|---|---|
| Data dodania do BaDAP | 2013-01-17 |
| Tekst źródłowy | URL |
| DOI | 10.1088/1742-6596/395/1/012037 |
| Rok publikacji | 2012 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Physics, Conference Series |
Abstract
This paper presents the results of experimental and numerical investigations of air flow through the crossing of a mining longwall and ventilation gallery. The object investigated consists of airways (headings) arranged in a T-shape. Maintained for technological purposes, the cave is exposed particularly to dangerous accumulations of methane. The existing system of duct connections causes part of the crossing to be insufficiently ventilated. Properly arranged ventilation should assure methane concentrations are maintained at a safe level. The geometrical scale of the physical model was 1:10. It was assumed that the air flow is steady and isothermal. Stereo Particle Image Velocimetry (SPIV) was used to evaluate the velocity vector components. In this study, two models of turbulence were tested: the standard k-epsilon model and a variation of that model, the RNG k-epsilon model. The examined flow is characterised by such flow features as separation, stream impingement on the wall, stress-driven flow and strong streamline curvature. Velocity fields and scalar (concentration or temperature) fields obtained in the cave by experimental measurements and numerical calculations for different Reynolds numbers are presented and discussed in this paper.