Method of calculation of a methane concentration field in gob areas with a known velocity field based on the model of stream tubes.pdfVIP
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Method of calculation of a methane concentration field in gob areas with a known velocity field based on the model of stream tubes.pdf
MiningScienceandTechnology(China)21(2011)277-280
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Methodofcalculationofamethaneconcentrationfieldingobareaswithaknown
velocityfieldbasedonthemodelofstream tubes
W angHonggang,W uFengliang
SchoolofEnergyEngineering,XianUniversityol’SdenceandTechnology,Xian710054,China
A R T IC L E lN F O A B S T R A C T
Artidehistory: Thecontrolequationsofgasconcentration fieldingobareaswithaknown velocity fieldareDartial
Received28August2010 differentiaIequationswithvariablecoefficients.whosetraditionalmathematicalaclculationmethodsare
Receivedinrevisedfom
verycomplex.Anumericalsimulationmethodcanbeusedtoaclculatethegasconcentrationfield.butit
10October2010
alsoneedsconsiderableamountsofcomputerresourcesand therelationsofgasconcentration at
Accepted25November2010
di舱rentpointsofthegobareaareundefined.Basedonthemodelofstream tubes.theconservation
equationsofmassandgascomponentswithinthestream tubeareusedtodeducetheequationsofagas
Keywords:
concentration field in a gobareawith aknown velocity field.ThismethOdofcalculation ofagas
Fluidfield
concentrationfieldisappliedinagobareawithaU—typeventilationworkingface.whichsuggeststhat
Gobarea
thisnew method hasthevirtue ofexactcalculationsissimple to operateand hasaclearPhysical
Concentrationfield
Stream tu
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