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Miedzo yakaitwa mugwara rectangular rakavharwa nemitsara yakachinjika yechina inclined cylindrical rods.Kudzvanya pamusoro pepakati tsvimbo yepamusoro uye kudonha kwekumanikidza kuyambuka gwara kwakayerwa nekusiyana kwerod's inclination angle.Magungano matatu edhayamita akasiyana-siyana akaedzwa.Migumisiro yekuyera inoongororwa uchishandisa musimboti wekuchengetedza semi-sevari yechinguvana. dimensionless parameters inogadzirwa inoenderana nedzvinyiriro panzvimbo dzakakomba dzegadziriro kune hunhu huyemu hwetsvimbo.Independence musimboti inowanikwa inobata nhamba zhinji dzeEuler dzinoratidza kudzvanywa munzvimbo dzakasiyana, kureva kuti kana dzvinyiriro isina dimensionless uchishandisa fungidziro yeinlet velocity yakajairika kutsvimbo, iyo seti inozvimiririra kubva kune dip angle. Iyo inokonzeresa semi-empirical correlation inogona kushandiswa Kugadzira yakafanana hydraulics.
Zvizhinji zvekupisa uye mashizha ekufambisa midziyo zvinosanganisira seti yemamodules, machaneli kana masero ayo mvura inopfuura mune zvakawanda kana zvishoma zvakaoma zvemukati zvivakwa zvakadai sematanda, buffers, kuisa, etc.More munguva pfupi yapfuura, kune kufarira kutsva pakuwana kunzwisisa zviri nani kwemaitiro anobatanidza kupararira kwemukati kudzvinyirira uye mauto kune yakaoma internals kudonhedzwa kwepasi rose ye module. nokuda kwenhamba dzekuenzanisa, uye kuwedzera kweminiaturization yezvigadzirwa.Zvidzidzo zvenguva pfupi zvekuedza zvekumanikidzika kugoverwa kwemukati uye kurasikirwa kunosanganisira migero yakaomeswa nembabvu dzakasiyana-siyana dzakaumbwa 1, electrochemical reactor cells 2, capillary constriction 3 uye lattice frame zvinhu 4.
Mamiriro emukati anonyanya kuzivikanwa ndeaya ane nharo cylindrical rods kuburikidza neunit modules, angave akasungwa kana kuti akaparadzaniswa.Muchitsinhanisi chekupisa, kugadzirisa uku kunowanzoitika kune shell side.Shell side pressure drop inobatana nekugadzirwa kwezvinopisa zvinopisa zvakadai semagetsi emagetsi, condensers uye evaporator.Muchidzidzo chechangobva kuitika, Wang et al. 5 yakawana rettachment uye co-detachment flow states in a tandem configuration of rods.Liu et al.6 akayera kudonha kwekumanikidzwa mumatanho ane rectangular ane akavakirwa-mukati maviri U-yakaita chubhu mabundle ane akasiyana inclination angles uye calibrated nhamba yenhamba inofananidzira masumbu etsvimbo ane porous media.
Sezvinotarisirwa, kune huwandu hwekugadzirisa zvinhu zvinokanganisa hydraulic performance ye cylinder bank: rudzi rwekugadzirisa (eg, kudzika kana mu-line), zviyero zvine hukama (eg, pitch, dhayamita, kureba), uye angle yekukwevera, pakati pevamwe. 7 yakaronga inobudirira porosity modhi uchishandisa kureba kweyuniti sero se control parameter, uchishandisa tandem uye akadzedzereka arrays uye Reynolds nhamba pakati 103 uye 104.Snarski8 akadzidza sei simba spectrum, kubva accelerometers uye hydrophone akasungirirwa humburumbira mumvura mugero, anosiyana nealt kuyerera. 9 akadzidza rusvingo kumanikidzwa kuparadzirwa kumativi cylindrical tsvimbo mu yaw airflow.Mityakov et al. 10 yakaronga nzvimbo yekumhanya mushure mehumburumbira yakakweshwa ichishandisa stereo PIV.Alam et al. 11 yakaita chidzidzo chakakwana chetandem cylinders, ichitarisa pamusoro pemigumisiro yenhamba yeReynolds uye geometric ratio pane vortex shedding.Vakakwanisa kuziva nyika shanu, dzinoti kukiya, kuvharwa kwepakati, kusavhara, kuvharwa kwe subharmonic uye shear layer rettachment states.Zvidzidzo zvenhamba zvenguva pfupi yapfuura zvakaratidza kuumbwa kwevortexstricted maitiro.
Muzhinji, iyo hydraulic performance ye unit cell inotarisirwa kuenderana nekugadzirisa uye geometry yemukati chimiro, kazhinji inoverengerwa neempirical correlations yeakananga kuyerwa kuyerwa.Mumichina yakawanda inoumbwa neperiodic components, mafambiro ekuyerera anodzokororwa musero rega rega, uye nekudaro, ruzivo rwune chekuita nemaseru anomiririra anogona kushandiswa kuratidza iyo yakazara hydraulic maitiro eiyo chimiro. Misimboti yekuchengetedza inoshandiswa inogona kuderedzwa kazhinji.Muenzaniso wakajairika ndeyekuburitsa equation ye orifice plate 15.Munyaya yakakosha yematanda akarerekera, angave akavharirwa kana kuvhurika kuyerera, chirevo chinonakidza chinowanzotaurwa mumabhuku uye chinoshandiswa nevagadziri ndiyo inotonga hydraulic magnitude (semuenzaniso, kudonhedza kudonhedza, kumanikidza kudonha, kumanikidza, kuyerera, vortex). kune cylinder axis.Izvi zvinowanzozonzi mutemo wekuzvimiririra uye inofunga kuti kuyerera kwemasimba kunotungamirirwa zvikuru nekupinda kwechikamu chemazuva ose uye kuti mhedzisiro yeaxial chikamu chinopindirana ne cylinder axis haina maturo.Kunyange zvazvo pasina kubvumirana mumabhuku pamusoro pehutano hwechokwadi huri mukati mezviyero zvakawanda zvinopa muongorori wezviyero zvakawanda zvinopa critteries yakawanda. Zvakajairwa zvemaempirical correlations.Zvidzidzo zvenguva pfupi yapfuura pamusoro pehuchokwadi hwenheyo yakazvimirira zvinosanganisira vortex-induced vibration16 uye single-phase and two-phase a averaged drag417.
Mubasa remazuva ano, migumisiro yekudzidza kwekumanikidzwa kwemukati uye kudonha kwemhepo mumugero une mutsara unotenderera wemakumbo mana akarerekera cylindrical rods anoratidzwa.Era magungano matatu etsvimbo ane madhayamita akasiyana, kushandura angle ye inclination.Chinangwa chikuru ndechekuongorora nzira iyo kuparadzirwa kwekumanikidza pamusoro petsvimbo kunoenderana nekudonha kwese kudonhedza mugero. kuchengetedza kwekukurumidza kuongorora kutendeseka kwenheyo yekuzvimirira.Pakupedzisira, dimensionless semi-empirical correlations inogadzirwa iyo inogona kushandiswa kugadzira zvakafanana hydraulic zvishandiso.
Kugadziriswa kwekuedza kwaiva nechikamu chekuongorora chekona chakagamuchira kuyerera kwemhepo kunopiwa neaxial fan.Chikamu chekuedza chine chikwata chinosanganisira matanda maviri akaenzana epakati uye maviri hafu-tsvimbo akaiswa mumadziro emugero, sezvakaratidzwa mumufananidzo 1e, yose yakafanana.
a Inlet chikamu (kureba mu mm).Gadzira b uchishandisa Openscad 2021.01, openscad.org.Main test chikamu (kureba mumm).Yakagadzirwa neOpenscad 2021.01, openscad.org c Mucherechedzo weCross-sectional wechikamu chikuru chebvunzo (kureba mumm).Yakagadzirwa ichishandisa Openscad 2021.0.1 Openscad 2021.01, yakaputika maonero echikamu chebvunzo che openscad.org e.Created with Openscad 2021.01, openscad.org.
Matatu matatu ematanda emadhayamita akasiyana akaedzwa.Tafura 1 inonyora maitiro ejometri yechiitiko chimwe nechimwe.Matanda akaiswa pane protractor kuitira kuti kona yavo inoenderana negwara rekuyerera inogona kusiyana pakati pe90 ° uye 30 ° (Figure 1b ne3) . Tsvimbo dzose dzakagadzirwa nesimbi isina tsvina uye dzakanangidzirwa kuti dzichengetedze nzvimbo yakagadzikana yerodhi iyo inotarisana nechepakati peyedzo nzvimbo yepakati peyedzo. chikamu.
Chiyero chekuyerera kwechikamu chekuedza chakayerwa necalibrated venturi, sezvinoratidzwa muMufananidzo 2, uye yakatariswa uchishandisa DP Cell Honeywell SCX. Kupisa kwemvura pakubuda kwechikamu chekuedza kwakayerwa nePT100 thermometer uye yakadzorwa pa 45 ± 1 ° C. Kuti ave nechokwadi chokuti planar velocity kugovera uye kuderedza chiyero chekupinda kwemvura inomanikidzwa kuburikidza nemagetsi matatu emvura. zvidzitiro.Kugara kureba kweinenge 4 hydraulic diameters yakashandiswa pakati pekupedzisira chidzitiro uye tsvimbo, uye kureba kwekubuda kwaive 11 hydraulic diameters.
Schematic diagram yeVenturi chubhu inoshandiswa kuyera inlet flow velocity (kureba mumamilimita).Yakagadzirwa neOpenscad 2021.01, openscad.org.
Chengetedza kudzvanywa pane chimwe chezviso zvepakati tsvimbo uchishandisa 0.5 mm yekumanikidza tap iri pakati-ndege yechikamu chebvunzo. Iyo dhayamita yepombi inoenderana ne5 ° angular span; saka kururamisa kweangular inenge 2 °. Tsvimbo inotariswa inogona kutenderedzwa pamusoro peaxis yayo, sezvinoratidzwa mumufananidzo 3. Musiyano pakati petsvimbo pamusoro pekumanikidza uye kumanikidzika pamusuwo wechikamu chekuedza kunoyerwa nekusiyana kweDP Cell Honeywell SCX series.Iyi mutsauko wekumanikidzika unoyerwa kune imwe neimwe yebhari, yakasiyana-siyana yekuyerera \ \ velocity, inclination angle) (\ azimuta angle).
kuyerera kwezvirongwa.Madziro emugero anoratidzwa negrey.Kuyerera kunoyerera kubva kuruboshwe kuenda kurudyi uye kunovhariswa netsvimbo.Ziva kuti maonero "A" ari perpendicular kune rod axis.Matsvimbo ekunze akaiswa semi-embedded mu lateral channel madziro.A protractor inoshandiswa kuyera angle of inclination \(\ alpha \).Yakagadzirwa,0221.0.0
Chinangwa chekuedza ndechekuyera nekududzira kudonhedzwa kwekumanikidzwa pakati pechannel inlets uye kumanikidzwa kwepamusoro pepakati tsvimbo, \ (\ theta \) uye \ (\ alpha \) yeazimuth yakasiyana uye dips.Kupfupisa mhinduro, kudzvinyirirwa kwekusiyanisa kucharatidzwa nenzira isina dimensionless senhamba yaEuler:
apo \(\ rho \) iri uwandu hwemvura, \({u}_{i}\) ndiyo nhanho inopinza, \({p}_{i}\) ndiyo inlet pressure, uye \({p }_{ w}\) ndiyo dzvinyiriro panzvimbo yakapiwa pamadziro etsvimbo. Velocity inopinza inogadziriswa mukati mezvikamu zvitatu zvakasiyana-siyana mumavheti kubva pa 1 mavharuvhu anobuda kubva pa 1 mavharuvhu. m/s, inofambirana nenhamba Reynolds chiteshi, \(Re\equiv {u}_{i}H/\nu \) (apo \(H\) kureba kwechiteshi, uye \(\nu \) ndiyo kinematic viscosity) pakati pe40,000 ne67,000. The rod Reynolds nhamba (\(u\){i) {\(u\) {{u}} kubva \{u\} _ 2500 kusvika 6500. The turbulence intensity inofungidzirwa nehukama hunoenderana nekutsauka kwezviratidzo zvakanyorwa mu venturi ndeye 5% paavhareji.
Mufananidzo 4 unoratidza kuwirirana kwe \({Eu}_{w}\) neazimuth angle \(\theta \), parameterized by three dip angles, \(\ alpha \) = 30 °, 50 ° uye 70 ° .Zviyero zvinopatsanurwa mumagirafu matatu maererano nedhayamita yetsvimbo.Inogona kuwanika kusinganzwisisike kwekuyerera kwenhamba. kutsamira kwakawanda pa θ kunotevera muitiro wenguva dzose wekumanikidza kwemadziro kutenderedza denderedzwa chipingamupinyi.Pakuyerera-kutarisana nemakona, kureva, θ kubva 0 kusvika 90 °, tsvimbo yemadziro pressure inoderera, inosvika pashoma pa 90 °, iyo inoenderana nemukaha pakati pematanda apo velocity yakakura kwazvo nekuda kwekuyerera kwenzvimbo yekudzoreredza kugumira θ kune 90 °. 100 °, mushure mokunge kudzvinyirira kunoramba kuripo kwakafanana nekuda kwekuparadzaniswa kwemashure emuganho wemuganhu wemadziro emudonzvo.Cherechedza kuti hapana shanduko mukona yekushongedzwa kwediki, iyo inoratidza kuti kuvhiringidzika kunobvira kubva kune pedo shear layers, seCoanda effects, ndeyechipiri.
Kusiyana kwenhamba yeEuler yemadziro akatenderedza tsvimbo yemakona akasiyana ekurerekera uye tsvimbo madhayamita.Yakagadzirwa neGnuplot 5.4, www.gnuplot.info.
Pane zvinotevera, tinoongorora zvabuda zvichibva pafungidziro yekuti nhamba dzeEuler dzinogona kuverengerwa chete nejometri parameters, kureva chimiro chehurefu hwereshiyo \(d/g\) uye \(d/H\) (apo \(H\) kureba kwechiteshi) uye kurerekera \(\ alpha \) perpendicular to the rod axis, \({u}_{n}={u}_{i}\mathrm {sin} \alpha \) .Iyi dzimwe nguva inonzi musimboti wekuzvimirira.Chimwe chezvinangwa zvekuongorora kunotevera ndechekuongorora kana iyi nheyo inoshanda kune yedu, uko kuyerera uye zvipingamupinyi zvakavharirwa mukati memigero yakavharwa.
Ngatitarisei dzvinyiriro yakayerwa pamberi penzvimbo yepakati yetsvimbo, kureva θ = 0. Maererano nekuenzanisa kwaBernoulli, dzvinyiriro panzvimbo iyi\({p}_{o}\) inogutsa:
apo \({u}_{o}\) iri kuyerera kwemvura pedyo nemadziro etsvimbo pa θ = 0, uye tinofungidzira kurasikirwa kuduku kusingadzoreki.Cherechedza kuti dzvinyiriro ine simba yakazvimiririra mukinetic simba izwi.Kana \({u}_{o}\) isina chinhu (kureva mamiriro akamira), nhamba dzeEuler dzinofanira kubatanidzwa.Zvisinei mumufananidzo we4 = (inogona kucherechedzwa) mhedzisiro \({Eu}_{w}\) iri pedyo asi haina kunyatso kuenzana neichi kukosha, kunyanya kune yakakura dip angles.Izvi zvinoratidza kuti kukurumidza kuri pamusoro petsvimbo hakuperi pa \(\theta =0\), iyo inogona kudzvinyirirwa nekutsauka kumusoro kwemitsara yemazuva ano yakagadzirwa netsvimbo. kuwedzera axial velocity kuzasi nekudzikisira sipidhi kumusoro.Tichifungidzira kuti ukuru hwekutsauswa kuri pamusoro ndiko kuratidzwa kwevheji yekupinza pashaft (kureva \({u}_{i}\mathrm{cos}\alpha \)), inofambirana nenhamba yeEuler inoti:
Mufananidzo 5 unoenzanisa maequation.(3) Inoratidza kubvumirana kwakanaka ne data yekuedza inoenderana.Kutsauswa kwepakati kwaiva 25%, uye chiyero chekuvimba chaiva 95%.Cherechedza kuti equation.(3) Maererano nemutemo wekuzvimiririra.Saizvozvowo, Mufananidzo 6 unoratidza kuti nhamba yeEuler inoenderana nekumanikidzika kuseri,{1} uye kumashure kwerod_,{0}, uye {0} pamusoro pe rod_, {0} paro, uye {0} pamusoro kubuda kwechikamu chebvunzo, \({p}_{e}\), Kunoteverawo maitiro akaenzana ne \({\mathrm{sin}}}^{2}\alpha \) .Muzviitiko zvose izvi, zvisinei, coefficient inoenderana nedhayamita yetsvimbo, inonzwisisika sezvo iyo yekupedzisira inotarisa nzvimbo yakavharirwa.Ichi chimiro chakafanana nedhishi repureti rinoyerera pane nzvimbo yakaderedzwa yetest ori. chikamu, basa remuburi rinotambwa nemukaha pakati petsvimbo.Panyaya iyi, dzvinyiriro inodonha zvakanyanya pakupuruzira uye zvishoma inopora sezvainokura ichidzokera kumashure.Tichifunga chirambidzo sechivharo chakavharika kune axis yetsvimbo, kudonha kwekumanikidza pakati pemberi nekumashure kwetsvimbo kunogona kunyorwa se18:
apo \({c}_{d}\) i drag coefficient inotsanangura chidimbu chekudzvinyirirwa kudzoreredza pakati pe θ = 90° ne θ = 180°, uye \({A}_{m}\) uye \({A}_{f}\) ndiyo diki diki yakasununguka muchinjikwa-chikamu pahurefu hweyuniti perpendicular kuakisi yetsvimbo, uye dhayamita yaro ndiyo hukama hwayo. \({A}_{f}/{A}_{m}=\ ​​Kuruboshwe (g+d\kurudyi)/g\).Nhamba dzeEuler dzinoenderana ndidzo:
Wall Euler nhamba pa \(\theta =0\) sebasa re dip.Iyi curve inoenderana ne equation.(3).Yakagadzirwa neGnuplot 5.4, www.gnuplot.info.
Wall Euler nhamba inochinja, mu \(\theta =18{0}^{o}\) (chikwangwani chizere) wobuda (chiratidzo chisina chinhu) chine dip.Macurves aya anoenderana nemusimboti wekuzvimirira, kureva \(Eu\propto {\mathrm{sin}}}^{2}\alpha \).Yakagadzirwa neGnuplot, www.info.gnu.5.
Mufananidzo wechinomwe unoratidza kutsamira kwe \({Eu}_{0-180}/{\mathrm{sin}}}^{2}\alpha \) pa\(d/g\), kuratidza kupindirana Kwakanaka kwakanyanyisa.(5).Kukweva koyefi yakawanikwa \({c}_{d}=1.28\pm 0.02) kunoratidza chiyero chimwe chetecho cheLigrafu che 6%. kudonha kwekumanikidza pakati pekupinda nekubuda kwechikamu chebvunzo kunotevera maitiro akafanana, asi neakasiyana macoefficients anofunga nezve kudzoreredzwa kwekumanikidza munzvimbo yekumashure pakati pebhari uye yekubuda kwechaneru.Inoenderana inodhonza coefficient \({c}_{d}=1.00\pm 0.05\) ine chivimbo che 67%.
Kuzvuzvurudza kunoenderana ne\(d/g\) kudonhedza kumberi neshure kwetsvimbo\(\left({Eu}_{0-180}\kurudyi)\) uye kudonha kwesero pakati pechanopinza nekubuda nacho.Nzvimbo yegrey ndiyo 67% bhandi rekutenda rekubatana.Yakagadzirwa neGnuplot.
Iyo shoma yekumanikidza \({p}_{90}\) pamusoro petsvimbo pa θ = 90 ° inoda kubatwa kwakakosha. Maererano neBernoulli's equation, pamwe nemutsara wezvino kuburikidza nemukaha uri pakati pemazariro, kumanikidzwa kwepakati\({p}_{g}\) uye velocity \({u}_{g}\) pakati pemakoini ane mutsara wepakati) kune zvinotevera zvinhu:
Kudzvinyirirwa \ ({p}_{g}\) kunogona kuwirirana netsvimbo pamusoro pekumanikidza pa θ = 90 ° nekubatanidza kuparadzirwa kwekumanikidza pamusoro pegeji rinoparadzanisa tsvimbo yepakati pakati pepakati nemadziro (ona Mufananidzo 8). Chiyero chesimba chinopa 19:
apo \(y\) ndiyo inorongana yakajairika kutsvimbo kubva pakati pepakati pepakati pepakati pepakati, uye \(K\) ndiko kupeteka kwemutsara wemazuva ano panzvimbo \ (y\) maverengero enhamba.Pamadziro etsvimbo, kukombama kunotariswa nechikamu cheellipse chetsvimbo pakona \(\alpha \), kureva \(K\left(g/2\right)=\left(2/d\right){\ mathrm{sin}}^{2}\alpha \) (ona Mufananidzo 8 wekuyerera kwemutsetse wemutsetse . \ (y = 0 \) nekuda kwekuenzana, iyo curvature pane yepasirese coordinate \ (y\) inopiwa ne:
Feature cross-sectional view, kumberi (kuruboshwe) uye pamusoro (pazasi). Yakagadzirwa neMicrosoft Word 2019,
Kune rimwe divi, nekuchengetedza misa, avhareji velocity mundege perpendicular kuyerera panzvimbo yekuyera \(\langle {u}_{g}\rangle \) ine hukama neinlet velocity:
apo \({A}_{i}\) inzvimbo inoyerera-inoyerera panzvimbo inopinza chiteshi uye \({A}_{g}\) inzvimbo inoyerera-inoyerera panzvimbo yekuyerwa (ona mufananidzo 8) zvichiteerana ne:
Ziva kuti \({u}_{g}\) haina kuenzana ne\(\langle {u}_{g}\rangle \) .Chaizvoizvo, Mufananidzo 9 unoratidza mwero wekumhanya \({u}_{g}/\langle {u}_{g}\rangle \), yakaverengerwa neequation.(10)–(14), yakarongwa zvichienderana nemwero wedhisiki \(14), yakarongwa zvichienderana nemwe dhigirii \ iyo inofananidzwa neyechipiri-odha polynomial:
Reshiyo yehupamhi\({u}_{g}\) neavhareji\(\langle {u}_{g}\rangle \) mavelocities echannel center cross-section\(.\) The solid and dashed curves inoenderana ne equation.(5) uye kusiyanisa kwepakati pemakoefidhi anoenderana\(\pm 25\%\4.plot.plot.Cre.
Mufananidzo 10 unoenzanisa \({Eu}_{90}\) nemibairo yechiedzo yeequation.(16).Nzvimbo yepakati yakatsauka yaive 25%, uye chivimbo chaive 95%.
Nhamba yeWall Euler iri \(\theta ={90}^{o}\).Iyi curve inoenderana neequation.(16).Yakagadzirwa neGnuplot 5.4, www.gnuplot.info.
Simba remambure \({f}_{n}\) rinoshanda padanda repakati perpendicular kune axis yaro rinogona kuverengerwa nekubatanidza kudzvanywa pamusoro petsvimbo sezvinotevera:
uko yekutanga coefficient ndiyo kureba kwetsvimbo mukati mechiteshi, uye kubatanidzwa kunoitwa pakati pe0 ne2π.
Iyo fungidziro ye \ ({f}_{n}\) munzira yekuyerera kwemvura inofanirwa kuenderana nekumanikidza pakati pekupinda nekubuda kwegeji, kunze kwekunge friction ichienderana netsvimbo uye diki nekuda kwekusakwana kwekuvandudzwa kwechikamu chekupedzisira Iyo nhanho yekuyerera haina kuenzana. Naizvozvo,
Mufananidzo 11 unoratidza girafu ye equations.(20) yakaratidza kubvumirana kwakanaka kwemamiriro ose ekuedza.Zvisinei, pane zvishoma zvishoma 8% kutsauka kune kurudyi, iyo inogona kunzi uye inoshandiswa seyero yekusaenzana kwekukurumidza pakati pechiteshi chekupinza uye kubuda.
Chigero chemagetsi chiyero
Kusiyanisa kona yekurerekera kwetsvimbo, kudzvanywa pamadziro emadziro etsvimbo uye kudonha kwekumanikidza mugero ine mitsara yakachinjika yechina inclined cylindrical rods yakayerwa.Matatu matatu akasiyana dhayamita tsvimbo maassemblies akaedzwa.Mukuedzwa kwenhamba yeReynolds nhamba, pakati pe2500 ne6500, iyo Euler chiyero chinoyerera chinotevera chinoyerera chepakati nhamba inoyerera yakazvimiririra inoyerera yepakati. macylinders, ari akanyanya kumberi uye ari mashoma pamukaha weparutivi pakati petsvimbo, achipora kuseri kwechikamu nekuda kwekuparadzaniswa kwemuganhu.
Data yekuedza inoongororwa pachishandiswa kukurumidza kuchengetedza kufunga uye semi-empirical ongororo kuti uwane invariant dimensionless nhamba dzinobatanidza nhamba dzeEuler kune hunhu huye hwemachaneli netsvimbo.Zvese geometrical maficha ekuvharira anomiririrwa zvizere nereshiyo pakati pedhayamita yetsvimbo uye mukaha pakati petsvimbo (laterally) uye urefu hwechiteshi (yakatwasuka).
Nheyo yekuzvimiririra inowanikwa inobata kune dzakawanda Euler nhamba dzinoratidza kudzvanywa munzvimbo dzakasiyana, kureva kuti kana kudzvanywa kusina dimensionless uchishandisa fungidziro yeinlet velocity yakajairwa kutsvimbo, iyo seti yakazvimirira pane dip angle. Mukuwedzera, chimiro chacho chine chokuita nehukuru uye kukurumidza kwekuyerera Kuenzanisa kwekuchengetedza kunopindirana uye kunotsigira nheyo yeempirical iri pamusoro.Iyo chete tsvimbo yepamusoro kumanikidzika pamukaha uri pakati pematanda inotsauka zvishoma kubva pamusimboti uyu.Dimensionless semi-empirical correlations inogadzirwa iyo inogona kushandiswa kugadzira zvakafanana hydraulic devices.Iyi classical approach yakashumwa ichangobva kutaurwa inopindirana neBernoqulliation application ichangobva kutaurwa inopindirana hydraulics uye hemodynamics20,21,22,23,24.
Mhedzisiro inonyanya kufadza inobva pakuongorora kudonha kwekumanikidza pakati pekupinza uye kubuda kwechikamu chekuedza. Mukati mekuedza kusava nechokwadi, mhedzisiro yekudhonza coefficient yakaenzana nekubatana, iyo inoratidza kuvapo kwezvinotevera zvisingachinji paramita:
Cherechedza saizi \(\kuruboshwe(d/g+2\kurudyi)d/g\) muchidimbu cheequation.(23) ukuru huri muzvikomberedzo muequation.(4), zvikasadaro inogona kuverengerwa nechikamu chepakati nechepachena perpendicular kutsvimbo, \({A}_{m}}\) inofungidzira kuti \{A} nhamba dzinofungidzirwa \(A) uye yns{} kuti urambe uri mukati mehuwandu hwechidzidzo chezvino (40,000-67,000 yezvigero uye 2500-6500 yetsvimbo) Zvakakosha kuziva kuti kana pane kusiyana kwekushisa mukati memugero, zvinogona kukanganisa huwandu hwemvura.
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