Flow in Atmospheric Boundary Layer in the Surrounding of Coal Stockpile - Effect of Air Direction on Spontaneous Ignition

• Autorzy: Blejchař T. , Michalcová V.
• Języki publikacji: EN

Abstrakty

EN

The paper deals with formulation of CFD simulation, which describes fluid flow in atmospheric boundary layer in coal stockpile surround. The paper presents preliminary phases of global project, which aim to spontaneous ignition of coal matter in coal stockpile and coal dump. First part of the global task is focused on generation of Earth’s surface topology on the basis of GIS data. Second task is focused on simplification of simulation domain and reduction of mesh size by substitution of mine building by porous subdomain. Simulations of flow in boundary layer include only eight dominant directions of wind which are specified by means of wind rose. The FFT analysis is applied to wind direction, intensity and temperature too. Spectrum of velocity and temperature were used to transient CFD simulation with real time 1 month.

Słowa kluczowe

EN

spontaneous ignition; coal stockpile

• Wydawca: Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archivum Combustionis
• Rocznik: 2010
• Tom: Vol. 30 nr 3
• Strony: 115--124
• Opis fizyczny: Bibliogr. 5 poz., rys., tab.

Twórcy

autor

Blejchař T.

autor

Michalcová V.

• Department of Hydrodynamics and Hydraulic Equipment, Faculty of Mechanical Engineering, VŠB – Technical University of Ostrava, 17. listopadu 15, Ostrava - Poruba, 708 33, Czech republic tel. [phone],,

Bibliografia

• [1] Fluent 12.1, Users Guide, Tutorial Guide, Ansys Inc.2010
• [2] Vesteeg, H. K., Malalasekera, W.: An Introduction to Computational Fluid Dynamics, Pearson Education Limited, England, 2007. ISBN 978-0-13-127498-3.
• [3] Broughton, S. A., Bryan, K.: Discrete Fourier analysis and wavelets:applications to signal and image processing, Hoboken: Wiley, c2009 - xv, 337 s. : il. ISBN 978-0-470-29466-6
• [4] Michalcová, V.: Numerické modelování zatížení budov při kvazistatickém působení větru: Disertační práce Fakulta stavební, VŠB–TU Ostrava, Ostrava 2007. ISBN 978-80-248-1529-9
• [5] Bojko, M., Kozubkova, M.: Methodic of the mathematical modelling of the low-temperature oxidation of coal (spontaneous of coal) defined in porous zone. Mechanical Engineering journal – Strojírenství. KET SjF Košice, 2009, p. 15-17, ISSN 1335-2938