QiYipei1, 2. Mathematical model of laminar sublayer based on the Nikuradse experiment[J]. Journal of Mining Science and Technology, 2019, 4(3): 240-245.
Citation: QiYipei1, 2. Mathematical model of laminar sublayer based on the Nikuradse experiment[J]. Journal of Mining Science and Technology, 2019, 4(3): 240-245.

Mathematical model of laminar sublayer based on the Nikuradse experiment

  • Inthemineventilation,thelaminarsublayerappearednearthewallofroadwaynotonlyexerts animportantinfluenceontheformationofvortexinthecorezoneandtheaccumulationofdustandgas, butalsoplaysadecisiveroleontheheattransfer,masstransferanddragreductionwiththewall*This paperbasedonNikuradseexperiment,avelocitydistributionformulawasderivedbytheoreticalanalysis aboundarybetweentransionalregionandhydraulicroughregionwasdetermined*Amoreprecisemath⁃ ematicalmodeloflaminarsublayerthicknesswasderivedandamathematicalmodelofboundaryturbu⁃ lentvelocitywasestablished,whichverifiedthatthethicknessdecreasedastheReynoldsnumberin⁃ creasedandroughnessdecreased,andfoundthattheratiooflaminarsublayerenergydissipationin⁃ creasedwiththeReynoldsnumberdecreasedandroughnessincreased*Theresultscouldbeappliedin theanalysisofmineventilation*
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