About: CFD simulations of the effect of wind on the spontaneous heating of coal stockpiles

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.sciencedirect.com/science/article/pii/S0016236113010053#
Description	A commercial CFD software program, fluent, was used to study the effect of wind on the spontaneous heating process of a coal stockpile. A two-domain model was developed to simultaneously solve the governing equations of an open porous medium (coal stockpile domain) situated in a homogeneous atmosphere (wind flow domain). Simulations with air blowing from a fixed direction as well as real fluctuations of the airflow both in velocity and direction were performed. Numerical calculations confirmed the promoting role of wind on the dynamics of the development of spontaneous heating. Under the conditions of the simulations, three possible shifts of the hot spot in the stockpile were distinguished when coal undergoes the self-heating process: (1) Shift of the hot spot to the pile surface when spontaneous heating of coal is in progress. (2) Movement of the hot spot inwards the stockpile as the wind speed increases. (3) Transfer of the hot spot from the upper part of the stockpile to the lower part when the self-heating process progresses. Such movement was found for wind speeds <= 3 m s(-1) and clearly is mainly connected with the effect of buoyancy. A commercial CFD software program, fluent, was used to study the effect of wind on the spontaneous heating process of a coal stockpile. A two-domain model was developed to simultaneously solve the governing equations of an open porous medium (coal stockpile domain) situated in a homogeneous atmosphere (wind flow domain). Simulations with air blowing from a fixed direction as well as real fluctuations of the airflow both in velocity and direction were performed. Numerical calculations confirmed the promoting role of wind on the dynamics of the development of spontaneous heating. Under the conditions of the simulations, three possible shifts of the hot spot in the stockpile were distinguished when coal undergoes the self-heating process: (1) Shift of the hot spot to the pile surface when spontaneous heating of coal is in progress. (2) Movement of the hot spot inwards the stockpile as the wind speed increases. (3) Transfer of the hot spot from the upper part of the stockpile to the lower part when the self-heating process progresses. Such movement was found for wind speeds <= 3 m s(-1) and clearly is mainly connected with the effect of buoyancy. (en)
Title	CFD simulations of the effect of wind on the spontaneous heating of coal stockpiles CFD simulations of the effect of wind on the spontaneous heating of coal stockpiles (en)
skos:prefLabel	CFD simulations of the effect of wind on the spontaneous heating of coal stockpiles CFD simulations of the effect of wind on the spontaneous heating of coal stockpiles (en)
skos:notation	RIV/68145535:_____/14:00425324!RIV15-AV0-68145535
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA105/08/1414)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Michalec, Zdeněk
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav geoniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	6746
http://linked.open...ai/riv/idVysledku	RIV/68145535:_____/14:00425324
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	coal oxidation; spontaneous heating; CFD modelling; coal stockpile (en)
http://linked.open.../riv/klicoveSlovo	coal stockpile coal oxidation spontaneous heating CFD modelling
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[3156C2ED21DC]
http://linked.open...i/riv/nazevZdroje	Fuel
http://linked.open...in/vavai/riv/obor	DH
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Mathematical modelling of coal spontaneous in coal stockpiles and dumps
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	118
http://linked.open...iv/tvurceVysledku	Taraba, B. Michalec, Zdeněk Bojko, M. Kozubková, M. Blejchař, T. Michalcová, V.
http://linked.open...ain/vavai/riv/wos	000329116600015
issn	0016-2361
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.fuel.2013.10.064

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