Page 221 - 《水资源与水工程学报》2024年第2期
P. 221

!35 "!2 #                         & ' ( ) & * + , -                               Vol.35No.2
               2024 $ 4 %               JournalofWaterResources&WaterEngineering                 Apr.,2024

            DOI:10.11705/j.issn.1672-643X.2024.02.25


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               Effectsofconvextypeonheadlossofdiscfilterwithdiscreteflowchannels
                                                                                            1,2,3
                                    1,2,3
                                                     1,2,3
                         JINYanjing    ,LIUNingning     ,ZHANGJinzhu    1,2,3 ,WANGZhenhua     ,
                                                                  1,2,3
                                                                                3,4
                                       ZHANGJihong   1,2,3 ,LIMiao   ,LIYunxia
            (1.CollegeofWaterConservancy&ArchitecturalEngineering,ShiheziUniversity,Shihezi832003,China;2.KeyLaboratoryofModern
             WaterSavingIrrigationofXinjiangProduction&ConstructionGroup,Shihezi832000,China;3.KeyLaboratoryofNorthwestOasis
             WatersavingAgriculture,MinistryofAgricultureandRuralAffairs,Shihezi832000,China;4.ResearchInstituteofFarmlandWater
                   ConservancyandSoilfertilizer,XinjiangAcademyofAgriculturalandReclamationScience,Shihezi832000,China)
                 Abstract:Thediscfilterwithdiscreteflowchannelsisanoveldevicethatproducesarelativelysmallwa
                 terheadloss.Theregulardistributionoftheconvexstructuresonthediscsurfaceisoneofthemainfac
                 torsaffectingheadlossofthediscfilter.Inordertofindouttheinfluenceofdifferenttypesoftheconvex
                 structureontheinternalflowfieldandfurtherreducetheheadlossofthediscfilter ,aphysicalexperi
                 mentandnumericalsimulationwereconductedtoanalyzetheheadlossandflowfielddistributioncharac
                 teristicsoffivedifferentconvexstructures,includingtheoriginalrighttriangle,rhombus,oval,uppertri
                 angleandlowertriangle.Theresultsshowthatthelowertriangleisconducivetoreducingthecontact
                 lengthbetweentheconvexstructureandthemainflowzoneandtheturbulencekineticenergyintensity ,
                 aswellastheheadlossofthediscfilterwithdiscreetflowchannels.Comparedwiththeoriginalrighttri
                 angle ,thecontactlengthandmaximumturbulencekineticenergyofthefouroptimizedconvexstructures
                 decreasedby9.61% -36.73% and25.87% -49.96%,respectively,amongwhich,thoseofthelower
                 triangledecreasedby29.99% and49.96%.Accordingtothesimulation,theheadlosscoefficientofthe

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