2016燃燒學(xué)年會集文獻

1,2,3 1 2,*（1.汽車與交通，合肥工業(yè)大學(xué)，合肥( ,: 摘要6080cm,60cm的儲油罐模型，本文研究了不同液位深度條件3.7mm22.9m，油盤尺寸跨和輻射主控燃燒[12,13]20cm時，便可以認(rèn)為燃燒處于輻射主控[5]，由Chatris等人[14]又進一步研究了大尺度汽油和柴油池火的油盤直徑和燃燒速率徑為30cm以上的、苯和煤油等的燃燒速率、火焰溫度、輻射強度等參數(shù)漸減小[16]。以上研究成果均能夠為我們了解儲油罐火災(zāi)的基本特征提供依據(jù)。MarcoFossa17]等人認(rèn)為隨著距離的增大，相鄰儲罐頂部受到的輻射強度迅速降低，而其側(cè)面漸增大。Mudan[18]等通過大量實驗數(shù)據(jù)研究發(fā)現(xiàn)火焰的火焰。Thomas[19]得出上表面和側(cè)面均布置熱電偶和輻射熱流計，具置如圖1所示，兩只熱輻射計R1與

1 lip

圖2質(zhì)量損失速率與液面高度之間關(guān)系如圖2-a）所示，質(zhì)量損失速率隨著液面高度的增大有明顯減小的趨勢，而對80cm60cm直徑的油池80cm油池火的油盤直徑較大，而液面高度處于三個相同的位置?？梢袁F(xiàn)明顯的線性關(guān)系。Blinov和Khudiakov[5]在其研究中發(fā)現(xiàn)，對于汽油池火而言，當(dāng)60cm

gDaD42DDShokri和Beyler給出視角因子模型，可以分別通過以下兩式描述

B1SB2B2

BB1SB1SA1SA1SA2A2

htan1

S1

S2

S1A1SA1SA1SA2 A2

h2S2A

S2 B

hD

F FF FE5810000823D

進行了詳細的討論，最后本文將對另一個重要影響因素空氣透射率進行分析。[Raj[22]的模型進行改進，發(fā)現(xiàn)大氣的投射系數(shù)可以表示為：1.389

P1.013105RHexp14.41145328

Ta實驗中，環(huán)境溫度為20℃，空氣密度a=1.2kg/m3，空氣濕度約為50%，同時根據(jù)實驗中測得的質(zhì)量損失速率數(shù)值，分別將間距L、油盤直徑D，代入

radiationradiationdesity86420-

radiationdesity86420 b）40R3而言，火焰形態(tài)的變化對輻射強度影響較小。distancedistanceexperimentaldatatheorydataFDSheatheat9630

distancedistanceexperimentaldatatheorydataFDSheat9630 R1處的輻射計處于相鄰儲罐的水平上表面，因液位深度增大，導(dǎo)致火焰高度降低，由（3）和（4）可知，火焰視角因子在R1處將會減小，因此此處輻射R3處，也會出現(xiàn)同樣的現(xiàn)R2處的輻射強度會隨著液R2處較近，因此，受熱罐體作為第二輻射源作5所示。heatheatheatheat 0 lipheight

lipheightA）油盤直徑60cm徑向距離 B）油盤直徑60cm徑向距離5.驗：

3010.127e0.033DL

其中，D為著火儲罐直徑；L為目標(biāo)點與著火儲罐中心的距離。（10）可以作結(jié)MarcoFossa,FrancescoDevia.Amodelforradiationevaluationandcoolingsystemdesignincaseoffireinfarms[J].FireSafetyJournal,2008,43(1):42–49. NoahL.Ryder,JasonA.Sutula,ChristopherF.Schemel,AndrewJ.Hamer,BruntVincentVan,Consequencemodelingusingthefiredynamicssimulator[J].JournalofHazardousMaterials,2004,115AnganSengupta,A.K.Gupta,I.M.Mishra,Engineeringlayoutof inafarm[J].JournalLossPreventionintheProcessIndustries,2011,24(5):568--GuanJingfu,FangJun,ZhangDan,WangJinjun,ZhangYongming,Experimentstudyofoilfirecharacteristicsdependentontheopeningof top[C]//The9thAsia-OceaniaSymposiumonFireScienceandTechnology,Hefei,2012.Blinov,V.I.,Khudiakov,G.N.Certainlawserningdiffusiveburningofliquid[R].AcademiiaNank,1957:pp:1094--1098.HiroshiKoseki.,G.W.Mulholland,Theeffectofdiameterontheburningofcrudeoilpoolfires[J].WangYi,ChatterjeePrateep,JohnL.deRis.Largeeddysimulationoffireplumes[C]//ProceedingsoftheCombustionInstitute,2011,33(2):2473--2480.HuLonghua,WuLong,LiuShuai,Flamelengthelongationbehaviorofmediumhydrocarbonpoolfirescrossairflow[J].Fuel,2013,111(9):613--Nakakuki,A.,heat-transferinsmall-scalepoolfires[J].CombustionandFlame,1994,96(3):311--Nakakuki,A.,Heattransferinhot-zone-formingpoolfires[J].CombustionandFlame,1997,Nakakuki,A.,Heattransferinpoolfiresatacertainsmalllipheight[J].CombustionandHaminsA，YangJC，KashiwagiT.AGlobalModelforPredictingtheBurningRatesofLiquidPoolFires[J].NationalInstituteofStandardsandTechnology,NISTIR6381,1999.FangJun,TuRan,GuanJinfu,WangJinjun,ZhangYongming.Influenceoflowairpressureoncombustioncharacteristicsandflamepulsationfrequencyofpoolfires[J].Fuel,2011,90(8):2760--2766.ChatrisJ.M.,QuinaJ.,FolchJ., nasE.,ArnaldosJ.,CasalJ.,Experimentalstudyofburningrateinhydrocarbonpoolfires[J].CombustionandFlame,2001,126(1):1373--1383.Rasbash,D.J.,PrattB.T.,Estimationofthesmokeproducedinfires[J].FireSafetyKevinB.McGrattan,HowardR.Baum,AnthonyHamins,ThermalRadiationfromLargePoolFires[J].NISTIR6546,2000.MarcoFossa,FrancescoDevia,Amodelforradiationevaluationandcoolingsystemdesignincaseoffire farms[J].FireSafetyJournal,2008,43(1):42--49.MudanK.S.,GeometricViewFactorsforThermalRadiationHazardAssessment[J].FireSafetyThomasP.H.,TheSizeofFlamesfromNaturalFires[C]//NinthSymposium(International)onCombustion,CombustionInstitute,Pittsburgh.1963,9(9):844--859ShokriM.,BeylerC.L.,RadiationfromLargePoolFires[J].JournalofFireProtectionCook,J.,Bahrami,Z.,Whitehouse,R.J.,Acomprehensiveprogramforcalculationofflameradiationleve