Page 119 - 《水资源与水工程学报》2022年第3期
P. 119

!33 " ! 3 #                       & ' ( ) & * + , -                               Vol.33No.3
               2022 $ 6 %               JournalofWaterResources&WaterEngineering                 Jun.,2022

            DOI:10.11705/j.issn.1672-643X.2022.03.15


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                 8IBJK:X703.1   LMNOP:A    LQRK:1672643X(2022)03011509
               Numericalsimulationofwaterpumpforcedwaterqualityequalizationbasin

                      underdifferentrefluxratiosandrefluxdistributionpipeheight

                                                1
                                                                  1
                                  1,2
                                                                                                   1
                                                                                    1
                     ZHANGXinxi ,WANGKai,ZHONGMeiying,FENGChengmin,HUXiaobing,
                                              1
                                                                                   1
                                                         1
                                                                       1
                                     QIUGao,LIJiawei,WANGChen,QINQing
                        (1.CollegeofArchitecturalEngineering,AnhuiUniversityofTechnology,Ma’anshan243002,China;
                                   2.NanjingTechUniversityPujiangInstitute,Nanjing211200,China)
                 Abstract:Inviewoftheinfluentwaterqualityfluctuationintheprocessofsewagetreatment,therectan
                 gularwavewasusedasthefluctuationtypeundertheconditionofcertaininfluentmassflowandinfluent
                 fluctuationperiodtosimulatetheequalizationprocessofthewaterpumpforcedwaterqualityequalization
                 basin(WPFWQEB)usingFluent.Theequalizationfunctioncoefficient(y)wasintroducedtothesimu
                 lation,andthentheeffectsofdifferentrefluxratios(s)andrefluxdistributionpipeheights(h)onthe
                 equalizationeffectoftheWPFWQEBwereanalyzed.Resultsindicatedthatswasthemainfactoraffecting
                 theequalizationeffectoftheWPFWQEB,withtheincreaseofs,theyshowedatrendof“rapidgrowth
                 followedbystabilization”.Firstly,yincreasedfrom0.72to0.82correspondinglywiththeincreaseofs
                 from0.16to1.00inthe“rapidgrowtharea”;thensincreasedgraduallyto6.00andyto0.92corre
                 spondinglyinthe“slowgrowtharea”,indicatingthatthelargerthesvalue,thebettertheequalization
                 effect;however,afterenteringthe“slowgrowtharea”,theinfluenceofsontheequalizationeffectwas
                 weakened.Furtherstudyrevealedthatthechangeof hhadnosignificanteffectontheequalizationeffect
                 oftheWPFWQEB ,becauseymerelyfluctuatedfrom0.81to0.85whenhvariedfrom50to350mm,
                 whichonlyaccountedfor3.7% ofthevariationrange;However,itwasworthnotingthatwhenhwasset
                 as350mm,thewatermixingandflowvelocityintheoutletareawereenhancedbecausetherefluxdistri

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