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Liteko li ile tsa etsoa ka mocha o khutlonnetsepa o koetsoeng ke mela e pharallang ea li-cylindrical rods tse tšekaletseng. Khatello e holim'a molamu o bohareng le ho theoha ha khatello ho pholletsa le kanale ho ne ho lekanyetsoa ka ho fapanyetsana ha angle ea molamu. s li hlahisoa tse amanang le khatello ea libaka tse mahlonoko tsa tsamaiso le litekanyo tse ikhethang tsa molamu.Molao-motheo oa boipuso o fumanoa o tšoarella bakeng sa linomoro tse ngata tsa Euler tse khethollang khatello libakeng tse fapaneng, ke hore haeba khatello e se na dimensionless ho sebelisa khakanyo ea lebelo la ho kena ho tloaelehileng ho molamu, sete e ikemetse ka lehlakoreng la ho qoelisoa.Sephetho sa semi-empirical correlation se ka sebelisoa bakeng sa Moralo oa li-hydraulic tse tšoanang.
Lisebelisoa tse ngata tsa mocheso le boima ba ho fetisa mocheso li na le sehlopha sa li-modules, likanale kapa lisele tseo metsi a fetang ka tsona ho feta kapa ka tlase ho rarahaneng ka hare ho likarolo tse kang lithupa, li-buffers, li-inserts, joalo-joalo haufinyane tjena, ho 'nile ha e-ba le thahasello e ncha ea ho fumana kutloisiso e molemo ea mekhoa e hokahanyang kabo ea khatello ea ka hare le matla ho ba sebetsang ka hare ho thata ho theoha ka kakaretso ea khatello ea module. s, le ho eketseha ha miniaturization ea lisebelisoa. Liphuputso tsa morao-rao tsa liteko tsa khatello ea kabo ea ka hare le tahlehelo li kenyelletsa likanale tse entsoeng ka likhopo tse fapaneng tse bōpehileng 1, lisele tsa electrochemical reactor 2, capillary constriction 3 le lisebelisoa tsa foreimi ea lattice 4.
The atileng ka ho fetisisa meaho ea ka hare ke arguably cylindrical melamu ka yuniti dimmojule, e ka ba bundled kapa ba itšehla thajana.In mocheso exchangers, tlhophiso ena e tloaelehileng ka lehlakoreng la khetla.Shell lehlakoreng khatello ea ho theoha ho amana le moralo oa ho fapanyetsana mocheso tse kang mouoane jenereithara, condensers le evaporator.Phuputsong ea morao tjena, Wang et al.Liu et al.6 e ile ea lekanya ho theoha ha khatello ea likanale tse khutlonnetsepa tse nang le li-tubes tse hahiloeng habeli tse nang le sebopeho sa U tse nang le li-angles tse fapaneng tse fapaneng, 'me tsa lekanya palo ea palo e ts'oanang ea lithupa tse nang le mecha ea phatlalatso.
Joalo ka ha ho lebelletsoe, ho na le lintlha tse 'maloa tsa tlhophiso tse amang ts'ebetso ea hydraulic ea banka ea cylinder: mofuta oa tlhophiso (mohlala, e sisinyehileng kapa e moleng), litekanyo tse lekanyelitsoeng (mohlala, sekontiri, bophara, bolelele), le angle ea ho sekamela, har'a tse ling.7 sisintsweng e atlehang porosity ea mohlala ho sebelisa bolelele ba yuniti sele e le parameter taolo, ho sebelisa tandem le staggered arrays le Reynolds dinomoro pakeng tsa 103 le 104.Snarski8 ithuta kamoo matla a manyenyane, ho tloha accelerometers le hydrophone khomaretse moqomo ka kotopo ea metsi, e fapana le phallo ea alclination.9 o ile a ithuta lerako khatello kabo ho pota cylindrical molamu ka yaw airflow.Mityakov et al.10 e ralile lebala la lebelo ka mor'a moqomo o tsoileng matsoho o sebelisa stereo PIV.Alam et al.11 e ile ea etsa phuputso e pharaletseng ea li-cylinders tsa tandem, tse lebisang tlhokomelo liphellong tsa palo ea Reynolds le karo-karolelano ea geometri holim'a vortex shed.
Ka kakaretso, ts'ebetso ea hydraulic ea sele ea yuniti e lebeletsoe hore e itšetlehe ka tlhophiso le geometry ea sebopeho sa ka hare, hangata se lekantsoeng ka likamano tse matla tsa litekanyo tse khethehileng tsa liteko. Lisebelisoa tse ngata tse entsoeng ka likaroloana tsa nako le nako, mokhoa oa phallo o phetoa ka seleng e 'ngoe le e' ngoe, ka hona, tlhahisoleseling e amanang le lisele tse emelang e ka sebelisoa ho hlalosa kakaretso ea boits'oaro ba hydraulic ea sebopeho, ka har'a maemo ana a mangata a conscale. e sebelisoang hangata e ka fokotsoa.Mohlala o tloaelehileng ke ho lahla equation bakeng sa poleiti ea orifice 15. Boemong bo khethehileng ba lithupa tse sekametseng, ebang ke phallo e koaletsoeng kapa e bulehileng, mokhoa o thahasellisang o atisang ho qotsoa libukeng le ho sebelisoa ke baqapi ke boholo ba hydraulic magnitude (mohlala, ho theoha ha khatello, ho qobella, ho phalla ha vortex ho ea ho leqhubu le leng le le leng) ho pota-pota). hangata e bitsoa molao-motheo oa ho ikemela 'me e nka hore matla a phallo a tsamaisoa haholo-holo ke karolo e tloaelehileng ea inflow le hore phello ea karolo ea axial e tsamaisanang le cylinder axis ha e na thuso. ty ea molao-motheo o ikemetseng o kenyelletsa vibration16 e hlahisitsoeng ke vortex le mokhahlelo o le mong le mekhahlelo e 'meli e hakantsoeng ea drag417.
Mosebetsing oa hona joale, liphello tsa thuto ea khatello ea ka hare le ho theoha ha khatello ka mocha o nang le mola o pota-potileng oa lithupa tse 'nè tse sekametseng li-cylindrical li hlahisoa.Lekanya likopano tse tharo tsa molamu tse nang le li-diameter tse fapaneng, ho fetola angle ea ho sekamela.Sepheo sa kakaretso ke ho batlisisa mokhoa oo kabo ea khatello holim'a molamu e amanang le ho theoha ha khatello ka kakaretso ka har'a mocha. um ho lekola bonnete ba molao-motheo oa boipuso.Qetellong, ho hlahisoa likamano tse se nang dimensionless semi-empirical tse ka sebelisoang ho rala lisebelisoa tse tšoanang tsa haeteroliki.
Setupo sa liteko se ne se e-na le karolo ea tlhahlobo ea khutlonnetsepa e ileng ea amohela moea o fanoang ke fan axial.Karolo ea teko e na le yuniti e nang le lithupa tse peli tse tšoanang tse bohareng le lithupa tse peli tsa halofo tse kentsoeng marakong a kanale, joalokaha ho bontšitsoe setšoantšong sa 1e, bophara bo tšoanang.
a Inlet section (bolelele ka mm).Create b using Openscad 2021.01, openscad.org.Main test section (bolelele ka mm).Created with Openscad 2021.01, openscad.org c Pono ea cross-sectional ea karolo e kholo ea teko (bolelele ka limilimithara).E entsoe ka ho sebelisa Openscad 2021, 2021 mm. 021.01, pono e phatlohileng ea karolo ea liteko ea openscad.org e.Created with Openscad 2021.01, openscad.org.
Ho ile ha lekoa lihlopha tse tharo tsa li-diameter tse fapaneng.Letlapa la 1 le thathamisa litšobotsi tsa geometrical tsa nyeoe ka 'ngoe. Melamu e kenngoa holim'a protractor e le hore angle ea bona e amanang le tataiso ea phallo e ka fapana pakeng tsa 90 ° le 30 ° (Figure 1b le 3) . Lithupa tsohle li entsoe ka tšepe e sa hloekang 'me li tsepamisitsoe ho boloka sebaka se lekanyelitsoeng sa li-rods sebaka se lekanyelitsoeng ka ntle ho sebaka se lekanyelitsoeng pakeng tsa tsona.
Sekhahla sa phallo ea karolo ea teko se ne se lekantsoe ke venturi e lekantsoeng, joalokaha ho bontšitsoe setšoantšong sa 2, 'me e hlahlojoa ho sebelisoa DP Cell Honeywell SCX. Mocheso oa mokelikeli ha o tsoa karolong ea teko o ne o lekantsoe ka thermometer ea PT100 'me o laoloa ho 45 ± 1 ° C. Ho etsa bonnete ba hore ho tsamaisoa ha lebelo la polane le ho fokotsa boemo ba ho phalla ha metsi a marang-rang a marang-rang a marang-rang. sebaka sa hoo e ka bang 4 hydraulic diameters se ile sa sebelisoa pakeng tsa skrine ea ho qetela le molamu, 'me bolelele ba ho tsoa e ne e le 11 hydraulic diameters.
Setšoantšo sa schematic sa tube ea Venturi e sebelisetsoang ho lekanya lebelo la phallo ea ho kena (bolelele ka limilimithara).E entsoe ka Openscad 2021.01, openscad.org.
Ela hloko khatello ho e 'ngoe ea lifahleho tsa molamu o bohareng ka pompo ea khatello ea 0.5 mm bohareng ba sefofane sa karolo ea teko.Bophahamo ba pompong bo lumellana le span ea 5 °;ka hona ho nepahala ha angular ke hoo e ka bang 2 °. Molamu o shebiloeng o ka potoloha ka axis ea oona, joalokaha ho bontšitsoe setšoantšong sa 3. Phapang pakeng tsa khatello ea holim'a molamu le khatello ea monyako oa karolo ea teko e lekantsoe ka lihlopha tse fapaneng tsa DP Cell Honeywell SCX. Phapang ena ea khatello e lekanyetsoa bakeng sa tokisetso e 'ngoe le e 'ngoe ea bar, ho fapana ho phalla \ \ velocity, angle azimu ( angle azimu) ( angle azimu).
litlhophiso tsa phallo.Mabota a kanale a bonts'oa ka bohlooho. Phallo e phalla ho tloha ka ho le letšehali ho ea ho le letona 'me e thijoa ke molamu.Ela hloko hore pono "A" e perpendicular to the rod axis.Marumo a ka ntle a kentsoe ka har'a mabota a lateral channel
Sepheo sa teko ke ho lekanya le ho hlalosa ho theoha ha khatello pakeng tsa li-channel inlets le khatello holim'a molamu o bohareng, \(\theta\) le \(\alpha\) bakeng sa li-azimuth tse fapaneng le li-dips.Ho akaretsa liphetho, khatello ea phapang e tla hlahisoa ka mokhoa o se nang moeli e le nomoro ea Euler:
moo \(\rho \) e leng boima ba mokelikeli, \({u}_{i}\) ke lebelo le lekaneng la ho kena, \({p}_{i}\) ke khatello e kenang,' me \({p }_{ w}\) ke khatello sebakeng se itseng leboteng la molamu. Lebelo la ho kena le tsitsitse ka har'a mekhahlelo e meraro e fapaneng ho tloha ho 6 ho tloha ho 1 ea li-valve tse tsamaisanang le 0 m. ho nomoro ea Reynolds ea kanale, \(Re\equiv {u}_{i}H/\nu \) (moo \(H\) e leng bophahamo ba kanale, le \(\nu \) ke kinematic viscosity) pakeng tsa 40,000 le 67,000. Nomoro ea rod Reynolds (\(Re\equiv \5) ho tloha ho 5 ho ea ho 5 ho tloha ho 5 ho tloha ho 5/__ matla a moferefere a hakanyetsoang ke ho kheloha ha maemo a lekanyelitsoeng a matšoao a tlalehiloeng ho venturi ke 5% ka karolelano.
Setšoantšo sa 4 se bontša kamano ea \({Eu}_{w}\) le azimuth angle \(\theta \), parameterized by dip angles tse tharo, \(\ alpha \) = 30 °, 50 ° le 70 ° .Litekanyo li arotsoe ka li-graph tse tharo ho ea ka bophara ba molamu.Ho ka bonoa ho se tsitse ha tekanyo ea ho phalla ho itšetlehile ka tekanyo ea ho phalla ka kakaretso. θ e latela mokhoa o tloaelehileng oa khatello ea lerako ho pota-potiloe ke tšitiso e chitja.Ka li-angles tse shebaneng le phallo, ke hore, θ ho tloha 0 ho ea ho 90 °, khatello ea lerako la molamu e fokotseha, e fihla bonyane ho 90 °, e lumellanang le lekhalo pakeng tsa melamu moo lebelo le leholo ka ho fetisisa ka lebaka la mefokolo ea sebaka sa phallo. junifomo ka lebaka la ho aroloa ha lera la moeli o ka morao oa lerako la molamu.Hlokomela hore ha ho na phetoho ka lehlakoreng la khatello e fokolang, e leng se bontšang hore litšitiso tse ka 'nang tsa e-ba teng ho tloha likarolong tse haufi tsa ho kuta, tse kang liphello tsa Coanda, ke tsa bobeli.
Phapang ea palo ea Euler ea lerako le pota-potileng molamu bakeng sa li-angles tse fapaneng tse sekametseng le li-diameter tsa molamu.E entsoe ka Gnuplot 5.4, www.gnuplot.info.
Ho se latelang, re sekaseka liphetho tse ipapisitseng le maikutlo a hore linomoro tsa Euler li ka hakanngoa feela ka li-parameter tsa geometri, ke hore, bolelele ba likarolo \(d/g\) le \(d/H\) (moo \(H\) e leng bophahamo ba kanale) le tšekamelo \(\alpha \) . rod axis, \({u}_{n}={u}_{i}\mathrm {sin} \alpha \) .Sena ka linako tse ling se bitsoa molao-motheo oa ho ikemela.E 'ngoe ea lipakane tsa tlhahlobo e latelang ke ho hlahloba hore na molao-motheo ona o sebetsa tabeng ea rona, moo phallo le litšitiso li koaletsoeng ka har'a mecha e koetsoeng.
A re nahaneng ka khatello e lekantsoeng ka pele ho molamu o bohareng, ke hore θ = 0. Ho ea ka equation ea Bernoulli, khatello sebakeng sena\({p}_{o}\) ea khotsofatsa:
moo \({u}_{o}\) e leng lebelo la mokelikeli haufi le lebota la molamu ho θ = 0, 'me re nka tahlehelo e batlang e le nyane e ke keng ea khutlisoa. Hlokomela hore khatello e matla e ikemetse ka nako ea matla a kinetic. Haeba \({u}_{o}\) e se nang letho (e leng boemo bo tsitsitseng), linomoro tsa Euler li lokela ho bonngoe. Eu}_{w}\) e haufi le empa ha e lekane hantle le boleng bona, haholo-holo bakeng sa li-angles tse kholoanyane tsa ho qoela. Sena se fana ka maikutlo a hore lebelo le holim'a molamu ha le nyamele ho \(\theta =0\), e ka hatelloang ke ho kheloha holimo ha mela ea hona joale e entsoeng ke ho sekama ha molamu.Kaha phallo e lekanyelitsoe karolong e ka holimo ea teko, karolo ea bobeli ea ho fokotseha e lokela ho eketseha karolong e ka holimo ea teko, karolo e ka tlaase ea vexicity e ntse e eketseha. tlase le ho fokotsa lebelo ka hodimo.Ho nka hore boholo ba kgeloha e ka hodimo ke kgakanyo ya lebelo la ho kena mosimeng (ke hore \({u}_{i}\mathrm{cos}\alpha \)), sephetho se tsamaelanang le nomoro ya Euler ke:
Setšoantšo sa 5 se bapisa li-equation.(3) E bontša tumellano e ntle le data ea liteko tse tsamaellanang.Palo ea ho kheloha e ne e le 25%, 'me boemo ba kholiseho e ne e le 95%.Hlokomela hore equation.(3) Tumellanong le molao-motheo oa ho ikemela.Ka mokhoa o ts'oanang, Setšoantšo sa 6 se bontša hore nomoro ea Euler e lumellana le khatello e ka morao,{0} le ka morao,{0} le ka morao ea teko ea 1,{0} le ka morao ea {0} ea teko ea {0} ka morao ea {0} gment, \({p}_{e}\), E boetse e latela mokhoa o lekanang le \({\mathrm{sin}}}^{2}\alpha \) . Maemong ana ka bobeli, leha ho le joalo, coefficient e itšetlehile ka bophara ba molamu, e leng ntho e utloahalang kaha ea ho qetela e etsa qeto ea sebaka se sitisoang. Tšobotsi ena e tšoana le ho theoha ha khatello ea mochine oa orifice orifice, karolo ea karolo ea teko ea orifice, karolo e itseng ea karolo ea teko ea orifice. e bapaloang ke lekhalo pakeng tsa melamu. Tabeng ena, khatello e theoha haholo ha ho tsubella 'me ka mokhoa o itseng o fola ha e ntse e atoloha ka morao. Ha ho nahanoa ka thibelo e le thibelo ea perpendicular to the rod axis, ho theoha ha khatello pakeng tsa pele le ka morao ea molamu ho ka ngoloa e le 18:
moo \({c}_{d}\) e leng coefficient e hulang e hlalosang phokotso ea khatello ea karolo e itseng lipakeng tsa θ = 90° le θ = 180°, le \({A}_{m}\) le \ ({A}_{f}\) ke karolo e fokolang ea mahala ea yuniti ka bolelele ba yuniti ho ea ho rod axis{_{}{}=A{}={}={}= kamano ea eona le{_{}{}=A{}=A{}= A Ka ho le letšehali (g+d\right)/g\).Linomoro tse tsamaellanang tsa Euler ke:
Nomoro ea Wall Euler ho \(\theta =0\) joalo ka ts'ebetso ea dip.Mokokotlo ona o tsamaisana le equation.(3).E entsoe le Gnuplot 5.4, www.gnuplot.info.
Wall Euler nomoro ea fetoha, ho \(\theta =18{0}^{o}\) (letšoao le felletseng) le ho tsoa (letšoao le se nang letho) ka ho qoelisoa. Li-curve tsena li lumellana le molao-motheo oa ho ikemela, ke hore \(Eu\propto {\mathrm{sin}}}^{2}\alpha \).Created with Gnuplot, www.info.gnu.5.
Setšoantšo sa 7 se bontša ho itšetleha ka \({Eu}_{0-180}/{\mathrm{sin}}}^{2}\alpha \) ho \(d/g\), e bonts'ang ho tsitsana ho Hotle ho feteletseng.(5). The fumanweng Hula coefficient ke \({c}_{d}=1.28\pm 0.02) le palo e tšoanang ea khatello ea 6 ho graph 0.02 ka tekanyo ea ho itšepa ka tsela e ts'oanang. ho tsoa le ho tsoa ha karolo ea teko ho latela mokhoa o ts'oanang, empa ka li-coefficients tse fapaneng tse nahanelang ho hlaphoheloa ha khatello sebakeng se ka morao pakeng tsa bar le sets'oants'o sa kanale.Mokhoa o tsamaisanang oa ho hula ke \({c}_{d}=1.00\pm 0.05\) ka kholiseho ea 67%.
Setsi sa ho hula se amana le \(d/g\) ho theoha ha khatello ka pele le ka morao ho molamu\(\left({Eu}_{0-180}\right)\) le kakaretso ea phokotseho ea khatello lipakeng tsa seketsoana sa kanale.Sebaka se bohlooho ke 67% ea khokahanyo ea khokahanyo.Created with Gnuplot..gnuplot 5.4
Khatello e tlase \ ({}} {90} {90} {90} \ (}} ) e amana le lintlha tse latelang:
Khatello \ ({p}_{g}\) e ka amahanngoa le khatello ea holim'a molamu ho θ = 90 ° ka ho kopanya khatello ea khatello holim'a lekhalo le arolang molamu o bohareng pakeng tsa midpoint le lerako (bona setšoantšo sa 8).Tekanyo ea matla e fana ka 19:
moo \(y\) e leng coordinate e tloaelehileng ho ea holim'a molamu ho tloha sebakeng se bohareng sa lekhalo pakeng tsa melamu e bohareng, 'me \(K\) ke ho kobeha ha mohala oa hona joale boemong \(y\).Bakeng sa tlhahlobo ea tlhahlobo ea khatello holim'a molamu, re nka hore \({u}_{g}\) e tšoana' me \(K\left) e hlophisitsoe joalo ka mola ka ho le letšehali. tions.Ho lerako la molamu, kobeho e khethoa ke karolo ea ellipse ea molamu ka lehlakoreng le leng \(\alpha \), ke hore \(K\left(g/2\right)=\left(2/d\right){\ mathrm{sin} }^{2}\alpha \) (sheba Figure 8).Then, mabapi le trymme = 3 streams = 10. curvature ho coordinate ea bokahohleng \(y\) e fanoa ke:
Feature chebo ea likarolo, ka pele (ka ho le letšehali) le ka holimo (tlase).E entsoe ka Microsoft Word 2019,
Ka lehlakoreng le leng, ka ho boloka boima, lebelo le tloaelehileng sefofaneng se pota-potileng ho phalla sebakeng sa tekanyo \(\langle {u}_{g}\rangle \) e amana le lebelo la ho kena:
moo \({A}_{i}\) e leng sebaka sa phallo ea karolo e tšekaletseng sebakeng sa ho kena ha kanale 'me \({A}_{g}\) e leng sebaka sa phallo ea karolo e fapaneng sebakeng sa tekanyo (sheba setšoantšo sa 8) ka ho latellana ka :
Hlokomela hore \({u}_{g}\) ha e lekane le \(\langle {u}_{g}\rangle \). Ha e le hantle, Setšoantšo sa 9 se bontša lebelo la karo-({u}_{g}/\langle {u}_{g}\rangle \), e baloang ka equation.(10)–(14), e hlophisitsoeng ho latela mokhoa oa app, (14), e reriloeng ho ea ka app e itseng, e khetholloang ho ea ka app xi. e kopantsoe ke polynomial ea bobeli:
Karo-karolelano ea boholo\({u}_{g}\) le karolelano\(\langle {u}_{g}\rangle \) lebelo la setsi sa channel cross-section\(.\) Li-curve tse tiileng le tse nang le marotholi li lumellana le li-equations.(5) le mefuta e fapaneng ea li-coefficients tse tsamaellanang \(\pm 25\%4.plot
Setšoantšo sa 10 se bapisa \({Eu}_{90}\) le liphetho tsa liteko tsa equation.(16).Palo ea ho kheloha e lekanyelitsoeng e ne e le 25%,' me boemo ba kholiseho e ne e le 95%.
Nomoro ea Wall Euler ho \(\theta ={90}^{o}\).Mokokotlo ona o tsamaisana le equation.(16).E entsoe ka Gnuplot 5.4, www.gnuplot.info.
Matla a marang-rang \({f}_{n}\) a sebetsang holim'a molamu o bohareng perpendicular ho axis ea oona a ka baloa ka ho kopanya khatello holim'a molamu ka tsela e latelang:
moo coefficient ea pele e leng bolelele ba molamu ka har'a mocha, 'me ho kopanngoa ho etsoa pakeng tsa 0 le 2π.
Tlhaloso ea \({f}_{n}\) ka tsela ea ho phalla ha metsi e lokela ho lumellana le khatello pakeng tsa ho kena le ho tsoa ha mocha, ntle le haeba ho ferekanngoa ho tšoana le molamu le ho nyenyane ka lebaka la tsoelo-pele e sa phethoang ea karolo ea morao-rao Phallo ea sekhahla ha e leka-lekane.Ka hona,
Setšoantšo sa 11 se bonts'a kerafo ea li-equations.(20) e bontšitse tumellano e ntle bakeng sa maemo ohle a liteko. Leha ho le joalo, ho na le ho kheloha ho fokolang ha 8% ka ho le letona, e ka hlalosoang le ho sebelisoa e le khakanyo ea ho se leka-lekane ha lebelo pakeng tsa ho kena ha mocha le ho tsoa.
Tekanyo ea matla a kanale.Mothapo o tsamaellana le equation.(20).Coefficient ea khokahano ea Pearson e ne e le 0.97.E entsoe ka Gnuplot 5.4, www.gnuplot.info.
Ho feto-fetoha ha lehlakoreng la molamu, khatello e leboteng la holim'a molamu le ho theoha ha khatello ka har'a mocha o nang le mela e pota-potileng ea melamu e mene e sekametseng ea cylindrical e ile ea lekoa. ka pele le bonyane ka lekhalo lateral pakeng tsa melamu, ho hlaphoheloa karolong e ka morao ka lebaka la ho arohana lera la moeli.
Lintlha tsa liteko li sekasekoa ho sebelisoa menahano ea paballo ea matla le litlhahlobo tsa semi-empirical ho fumana linomoro tse sa fetoheng tse amanang le linomoro tsa Euler le litekanyo tse ikhethang tsa likanale le melamu. Likarolo tsohle tsa geometrical tsa ho thibela li emeloa ka botlalo ke karo-karolelano lipakeng tsa bophara ba molamu le lekhalo lipakeng tsa melamu (laterally) le bophahamo ba kanale (tse otlolohileng).
Molao-motheo oa boipuso o fumanoa o ts'oara linomoro tse ngata tsa Euler tse khethollang khatello libakeng tse fapaneng, ke hore, haeba khatello e se na dimensionless ho sebelisoa khakanyo ea lebelo la ho kena ho tloaelehileng ho molamu, sete e ikemetse ho sekhutlo sa dip.Ho phaella moo, tšobotsi ena e amana le boima le lebelo la phallo Li-equations tsa paballo li lumellana 'me li tšehetsa molao-motheo o ka holimo oa empirical.Ke feela khatello ea holim'a molamu ka lekhalo pakeng tsa melamu e kheloha hanyenyane ho tloha molaong ona.Dimensionless semi-empirical correlations are generated that can used to design similar hydraulic devices.This classical approached with the similar applications of the Bearauhydraudynamic s20,21,22,23,24.
Sephetho se khahlang haholo se bakoa ke tlhahlobo ea phokotseho ea khatello lipakeng tsa ho kena le ho tsoa karolong ea teko.Ka har'a ho hloka botsitso ha liteko, sephetho sa coefficient ea ho hula e lekana le bonngoe, e bonts'ang boteng ba liparamente tse latelang tse sa fetoheng:
Ela hloko boholo \(\left(d/g+2\right)d/g\) ho denominator ea equation.(23) ke boholo ka masakaneng a equation.(4), ho seng joalo e ka baloa ka karolo e fokolang le e lokolohileng ea sefapano ka tsela e lumellanang le rod, \({A}_{m}}}) e fana ka maikutlo a hore Re ka har'a lipalo tse \(A) le \ yn ea thuto ea morao-rao (40,000-67,000 bakeng sa likanale le 2500-6500 bakeng sa lithupa) Ke habohlokoa ho hlokomela hore haeba ho na le phapang ea mocheso ka har'a mocha, e ka 'na ea ama boima ba metsi.Tabeng ena, phetoho e lekanyelitsoeng ho palo ea Euler e ka hakanngoa ka ho atisa coefficient ea ho atolosa mocheso ka tekanyo e phahameng ea mocheso o lebeletsoeng.
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Wu, L., Arenas, L., Graves, J., le Walsh, F. Phallo ea lisele tse phallang: pono ea phallo, ho theoha ha khatello, le lipalangoang tse ngata ka li-electrode tse peli-dimensional likanaleng tse khutlonnetsepa.J.Electrochemistry.Socialist Party.167, 043505 (2020).
Liu, S., Dou, X., Zeng, Q. & Liu, J. Lintlha tse ka sehloohong tsa phello ea Jamin ka har'a li-capillari tse nang le li-cross-sections tse fokolang.J.Gasoline.saense.Borithane.196, 107635 (2021).