Page 122 - 《水资源与水工程学报》2025年第2期
P. 122

!36 "!2 #                         & ' ( ) & * + , -                               Vol.36No.2
               2025 $ 4 %               JournalofWaterResources&WaterEngineering                 Apr.,2025

            DOI:10.11705/j.issn.1672-643X.2025.02.14


                            '0rD Boltzmann 3<IJaæ=

                                          KL½HaABâã


                                                 1         2        1         3
                                          H¯" , °˜± , ° ² , ³Ÿ´
                             (1. stù[k×Z%, r^ st 712100;2. ò6¨Íá•, Ø! ò6 618000;
                                   3. ^/þÿnIŸEèì”0’Ú>()%, ^/ ¿½ 850000)
                 A B: ºhÖ、 2¢J3xQ~I֕–!, „RCT©®’O7w¹º。摢¥I;¦•–, ()„RCº
                 KP•–!T†‡ì.°±b?²³。u =5 D2Q16 í%T”i Boltzmann RÁ(LBM) íG~IÖ«, ÀŸ 
                 D2Q5 í%¡„RC_Î$»¼íG, ¾¿‘ªÔ6‰}÷¡a、 ‰}‡)§w©IÖÖa¡Ô„RC†‡
                 Tš›。ÁyêZ: ªÔ÷¡a¡5ԍ„RC«g†‡Tš›;l, ·»AÖaNń, \]ªÔ÷¡aTb
                 l, ԍüLrST„RC†‡¯›Ü!, ·ªÔ÷¡a L/Dæ 1.0 „, üLrST„RC«gˆBŠl5´óª
                 Ô÷¡a!T„RC«gˆB; ·ªÔ÷¡aNń, \]»AÖaTbl, ԍürS„RC«gTˆB-Oˆ
                 f’‰r!ÔTij; Ô6‡)§w¡5ԍ„RCT†‡š›;l, ˜R§‡)§wFa5³E§、 ȧJ;§
                 ԍ}Æ)LrST„RC«g¯Õ。
                 CDE: „RC†‡; „RC«g; Ô6; ”i Boltzmann Á; ~IR$; ÌBíG
                 FGHIJ:X52   KLMNO:A    KPQJ:1672643X(2025)02011807

                       Effectofcolumngrouparrangementonpollutantdistribution
                                       basedonlatticeBoltzmannmethod

                                             1
                                                                       1
                                                            2
                                                                                      3
                                  XIAPengfei,DUHaichuan,DUXuan,CAODesheng
                (1.YanglingVocational&TechnicalCollege,Yangling712100,China;2.DeyangMunicipalBureauofCommerce,Deyang
                 618000,China;3.TibetWaterConservancyandHydropowerPlanningSurveyandDesignInstitute,Lasa850000,China)
                 Abstract:Thephenomenonofpollutanttransportiswidespreadinshallowwaterbodies,suchasrivers,
                 channels,andlakes.Studyingpollutantdistributionisofparamountsignificanceforwaterecosystemcon
                 servation.ThispaperadoptsthelatticeBoltzmannmethod(LBM)basedonD2Q16modeltosimulatethe
                 shallowwaterflow ,andD2Q5modeltosimulatethepollutantdiffusionprocess.Basedonthesimulation
                 results,theinfluenceofdifferentspacingratios,flowvelocities,andvariousarrangementsofcolumn
                 groupsonthedistributionofpollutantsbehindthecolumnsareinvestigated.Theresultsshowthatthe
                 spacingratiobetweencolumnshasasubstantialimpactonthedistributionofpollutantconcentrationbe
                 hindthecolumns.Whentheinletflowvelocityisconstant,asthecolumnspacingratio(L/D)increa
                 ses ,thepollutantdistributionateachcrosssectionbehindthecolumnbecomesmoreconcentrated.When
                 L/D=1.0,theextremevalueofpollutantconcentrationateachcrosssectionisgreaterthanthatunder
                 anyotherL/D.Atafixedcolumnspacingratio,astheflowvelocityincreases,themaximumpollutant
                 concentrationatvariouscrosssectionsbehindthecolumnsgenerallyexhibitadecreasingtrend.Thear
                 rangementpatternofthecolumngroupshasasignificantimpactonthedistributionofpollutantconcentra
                 tionbehindthecolumns ,withalowerpollutantconcentrationbehindthecolumnsinsquarearrangement
                 thanincloverleaf,trapezoidal,anddiamondarrangements.
                 Keywords:pollutantdistribution;pollutantconcentration;columngroup;latticeBoltzmannmethod;

                !"#$:20241029; %&#$:20241226
                '()*: stYÒn 2024 TYk>”-.(2024NY17); stù[k×Z% 2024 T%Å=j-.(SJ2024004)
                +,-.: E~0(1987—), 2, r^÷Ë7, 89, ?p;, >?@AIŸ#$î[pZ*Y(#U。
   117   118   119   120   121   122   123   124   125   126   127