IInombolo kaReynolds (Re)ingenye yemingcele ebaluleke kakhulu engenakulinganiswa ku-fluid mechanics. Kuyasiza ukuchaza ubudlelwano phakathiamandla angenawo amandla kanye namandla aqinilekuketshezi olugelezayo futhi luvame ukusetshenziswa ukuthola ukuthi ukugelezai-laminar, i-transitional, noma i-dyslusion.

Ukuze kulinganiswe ukugeleza kwe-ultrasonic, inombolo kaReynolds ibalulekile ngoba uhlelo lokugeleza luthinta ngqoiphrofayili yesivinini ngaphakathi kwepayipiNjengoba imitha yokugeleza ye-ultrasonic ilinganisa ijubane loketshezi endleleni ye-acoustic futhi isebenzisa lolo lwazi ukuthola ijubane lokugeleza elimaphakathi, izinguquko kuphrofayili yejubane zingathinta ukunemba kokulinganisa.

1. Iyini Inombolo kaReynolds?

Ngokugeleza ngaphakathi kwepayipi, inombolo kaReynolds ingachazwa kanje:

Re = ρVD / μ

noma:

Re = VD / ν

kuphi:

• Re= Inombolo kaReynolds
• ρ= ukuminyana koketshezi
• V= ijubane lokugeleza elimaphakathi
• D= ububanzi bangaphakathi bepayipi
• μ= ukujiya okuguquguqukayo
• ν= ukujiya kwe-kinematic

Inombolo kaReynolds ayinakulinganiswa.

Ngokuvamile, ngokugeleza kwepayipi eliyindilinga:

• Re < cishe 2,300→ Ukugeleza kwe-Laminar
• Re ≈ 2,300–4,000→ Ukugeleza kwesikhashana
• Re > cishe 4,000→ Ukugeleza okuguquguqukayo

Lezi zindinganiso ziyiziqondiso ezijwayelekile kunokuba zibe yimingcele ephelele, ngoba izimo zangempela zokugeleza zingahluka kuye ngokuthi i-geometry yamapayipi kanye nokuphazamiseka kwawo.

2. Uyini Umehluko Phakathi Kokugeleza Kwe-Laminar Nokuzulazula Okuguquguqukayo?

Umehluko omkhulu yindlela ijubane elisakazwa ngayo kulo lonke ipayipi.

Ukugeleza kwe-Laminar

Ekugelezeni kwe-laminar, uketshezi luhamba ngezendlalelo ezihlelekile.

Iphrofayili yejubane ivame ukugqama kakhulu, nge:

• Ijubane eliphansi eduze kodonga lwepayipi
• Ijubane eliphakeme eliya enkabeni
• Iphrofayili yejubane elibikezelwayo elingabikezelwa

Isethulo esilula yilesi:

Udonga → Isivinini Esiphansi → Isivinini Esiphezulu → Isivinini Esiphansi → Udonga

Ukugeleza Okunezinxushunxushu

Ekugelezeni okuguquguqukayo, ukunyakaza koketshezi akuvamile kakhulu.

Ukuguquguquka okuncane kanye nokuxubana kubangela ukuthi iphrofayili yejubane ibe yithambe uma kuqhathaniswa nokugeleza kwe-laminar.

Lokhu kusho ukuthi ukusatshalaliswa kwejubane kulo lonke ipayipi kushintsha kakhulu ngenombolo kaReynolds.

3. Kungani Lokhu Kubalulekile Ku-Ultrasonic Flow Meter?

I-ultrasonic flow meter ayilinganisi ngqo inani eliphelele loketshezi oludlula epayipini.

Kunalokho, ilinganisaijubane loketshezibese kubalwa izinga lokugeleza kwevolumu.

Ngendlela elula:

Q = V × A

kuphi:

• Q= izinga lokugeleza kwevolumu
• V= ijubane lokugeleza elimaphakathi
• A= indawo yepayipi enqamula ingxenye

Inselele iwukuthi ijubane elilinganiswa ngendlela ye-ultrasonic acoustic lingase lingalingani ncamashi nejubane elimaphakathi kulo lonke ipayipi.

Ngakho-ke, ithuluzi kumele libheke ubudlelwano phakathi kwejubane elilinganisiwe le-acoustic kanye nejubane langempela lokugeleza elimaphakathi.

Lobu budlelwano buthonywa kakhulu yiphrofayili yejubane.

4. Inombolo kaReynolds iyishintsha kanjani iphrofayili yejubane?

Cabanga ngamacala amabili.

Inombolo Ephansi KaReynolds

Uma i-Re iphansi, ukugeleza kungaba yi-laminar.

Iphrofayili yejubane igobile kakhulu:

Ijubane eliphakathi > Ijubane elimaphakathi > Ijubane eliseduze nodonga

Uma indlela ye-ultrasonic acoustic idlula endaweni ethile yepayipi, ijubane elilinganisiwe lingahluka kakhulu kunejubane eliphakathi nendawo.

Inombolo Ephakeme KaReynolds

Uma i-Re iphezulu, ukugeleza kuba nokuphazamiseka.

Ukuxuba kuvame ukukhiqiza iphrofayili yejubane eliyisicaba, yize ijubane lisancipha liye odongeni lwepayipi.

Ngakho-ke ijubane lendlela ye-acoustic lingaba nobuhlobo obuhlukile nejubane elijwayelekile lepayipi.

Lesi esinye sezizathu ezenza i-ultrasound flow meter ingakwazi ukucabanga ukuthi inani elilodwa lejubane elilinganisiwe lihlala lihambisana nejubane elifanayo lokugeleza elimaphakathi.

5. Amamitha Okugeleza E-Ultrasonic Enombolo KaReynolds kanye Nesikhathi Sokuhamba

Ukuze uthole imitha yokugeleza kwe-ultrasonic yesikhathi sokuthutha, ithuluzi lilinganisa umehluko phakathi kwezikhathi zokuthutha ze-ultrasonic ezikhuphukayo neziphansi.

Ubudlelwano obuyisisekelo bungenziwa lula kanje:

Ijubane Lokugeleza ∝ Umehluko Wesikhathi Sokuhamba

Ijubane elilinganisiwe lihlotshaniswa nengxenye yejubane endleleni ye-ultrasonic acoustic.

Kodwa-ke, izinga langempela lokugeleza kwevolumu lincike ku-ijubane elimaphakathi kulo lonke ipayipi eliwela ingxenye.

Ngakho-ke, ithuluzi kumele lihlobanise ijubane elilinganisiwe le-acoustic nejubane elijwayelekile lokugeleza.

Lobu budlelwano bungathinteka yilokhu okulandelayo:

• Inombolo kaReynolds
• Indawo yendlela ye-acoustic
• Inani lezindlela ze-acoustic
• Iphrofayela yokugeleza
• Ububanzi bepayipi
• Ukuphazamiseka kokugeleza

6. Kungani Umphumela Ubaluleke Kakhulu Emazingeni Okugeleza Aphansi?

Kusukela:

Re = ρVD / μ

lapho ijubane lokugeleza lehla, inani likaReynolds nalo liyehla.

Isibonelo, uhlelo olusebenza ngesivinini esikhulu sokugeleza lungase lube nokugeleza okugcwele okuguquguqukayo, kuyilapho uhlelo olufanayo olusebenza ngesivinini sokugeleza esiphansi kakhulu lungasondela ohlelweni lwesikhashana noma lwe-laminar.

Ngakho-ke iphrofayili yejubane ingashintsha kakhulu njengoba izinga lokugeleza lishintsha.

Lokhu kusho ukuthi ubudlelwano phakathi:

Ijubane lendlela ye-acoustic

futhi

Ijubane elimaphakathi lepayipi

kungase kushintshe futhi.

Kwamanye amamitha okugeleza e-ultrasonic, lokhu kungaba yinto ebalulekile uma kulinganiswa amazinga okugeleza aphansi kakhulu noma uketshezi oluqinile kakhulu.

7. Kungani Ukujiya Koketshezi Kubalulekile?

Inombolo kaReynolds ihlobene ngokuphambene ne-viscosity:

Re = ρVD / μ

Uma i-viscosity ikhuphuka, inani likaReynolds liyancipha ngobubanzi bepayipi, ubuningi, kanye nesivinini sokugeleza esifanayo.

Isibonelo, cabanga ngoketshezi olubili olugeleza ngesivinini esifanayo ngepayipi elifanayo:

Amanzi → Ukuchama okuphansi → Ukuqina Okuphezulu

Uwoyela osindayo → Ukuthamba okuphezulu → Ukwehla kwe-Re

Uwoyela osindayo ungase ube nephrofayili yejubane evelele kakhulu ngenxa yokuthamba kwawo okuphezulu.

Ngakho-ke, imitha yokugeleza efanayo ye-ultrasonic ingase isebenze ngendlela ehlukile lapho ilinganisa uketshezi oluhlukene, noma ngabe ububanzi bepayipi kanye nesivinini sokugeleza kufana.

8. Kungani Ubude Bepayipi Eliqondile Buhlobene Nenombolo KaReynolds?

Inombolo kaReynolds iyasiza futhi ukuchaza ukuthi kungani ubude obuqondile obufanele bubalulekile.

Ngemva kokubopha indololwane, ivalvu, i-reducer, noma okunye ukufakelwa, iphrofayili yokugeleza ingaphazamiseka.

Ukugeleza kudinga ibanga elanele ukuze kukhule kube yiphrofayili ezinzile.

Inqubo yokuthuthukisa incike ezintweni ezifaka phakathi:

• Inombolo kaReynolds
• Ububanzi bepayipi
• Ubulukhuni bepayipi
• Uhlobo lokuphazamiseka
• Ijubane lokugeleza

Uma i-ultrasonic flow meter ifakiwe eduze kakhulu nokuphazamiseka okungaphezulu komfula, ijubane le-acoustic elilinganisiwe lingathonywa kakhulu yiphrofayili yejubane elingalingani noma elijikelezayo.

Lokhu kungaletha amaphutha okulinganisa.

Yingakho isiqondiso esijwayelekile sokufaka imitha yokugeleza kwe-ultrasonic singase sincome:

Ipayipi eliqondile elikhuphukayo ≥ 10D

Ipayipi eliqondile elisezansi ≥ 5D

kuphiU-D ububanzi bangaphakathi bepayipi.

9. Ingabe Inombolo Ephakeme KaReynolds Ihlala Isho Ukunemba Okungcono?

Akunjalo ngempela.

Inombolo ephezulu kaReynolds ngokuvamile ibonisa ukugeleza okuguquguqukayo, kodwa ukunemba kokulinganisa kuncike kwezinye izici eziningi.

Lokhu kufaka phakathi:

• Iphrofayela yokugeleza
• Ukufakwa kwe-transducer
• Isimo sepayipi
• Ubude bepayipi eliqondile
• Ikhwalithi yesiginali
• Ukucushwa kwendlela ye-acoustic
• Izakhiwo zoketshezi
• Ukulinganiswa kwemitha

Ngakho-ke, inombolo kaReynolds kufanele ibhekwe njengebalulekile.ipharamitha yesimo sokugeleza, kunokuba kube yinkomba eqondile yokunemba kwemitha yokugeleza.

10. Kungani Ama-Multi-Path Ultrasonic Flow Meters Engazweli Kakhulu Kuphrofayili Yokugeleza?

Lokhu kungenye yezinzuzo ezibalulekile zokulinganisa ukugeleza kwe-ultrasonic okunezindlela eziningi.

Indlela eyodwa ye-acoustic ihlola ijubane endaweni elinganiselwe yepayipi.

Imitha yokugeleza enezindlela eziningi isebenzisa izindlela eziningana ze-acoustic ezindaweni ezahlukene.

Ngomqondo:

Indlela Eyodwa

→ Ilinganisa ijubane endleleni eyodwa ye-acoustic

Izindlela Eziningi

→ Amasampula ezifundeni eziningi zepayipi

Ithuluzi lingasebenzisa lezi zilinganiso ukuthola ukumelwa okungcono kokusatshalaliswa kwejubane lonke.

Ngakho-ke, amamitha okugeleza e-ultrasonic anezindlela eziningi avame ukuthandwa lapho:

• Iphrofayili yokugeleza iyinkimbinkimbi
• Ukunemba okuphezulu kuyadingeka
• Ububanzi bepayipi bukhulu
• Ukuphazamiseka kokugeleza kwamanzi kunzima ukukugwema

Inombolo kaReynolds ithinta ukulinganiswa kokugeleza kwe-ultrasound ngoba ithonyauhlelo lokugeleza kanye nephrofayili yesivinini ngaphakathi kwepayipi.

Ubudlelwano obuyisisekelo yilobu:

Re = ρVD / μ

Njengoba inombolo kaReynolds ishintsha, ukugeleza kungase kushintshe phakathi kwezimiso ze-laminar, ze-transitional, kanye ne-turbulent. Lokhu kushintsha ukusatshalaliswa kwejubane kulo lonke ipayipi ngakho-ke kuthinta ubudlelwano phakathi kwejubane elilinganiswe endleleni ye-ultrasonic acoustic kanye nejubane langempela lokugeleza elimaphakathi.

Ukuze kulinganiswe ukugeleza kwe-ultrasonic okusebenzayo, inombolo kaReynolds kufanele icatshangelwe kanye nalokhu:

Ijubane lokugeleza + I-viscosity yoketshezi + Ububanzi bephayiphi + Iphrofayili yokugeleza + Ubude bephayiphi eqondile + Ukucushwa kwendlela ye-Acoustic

Ukuqonda inombolo kaReynolds kusiza onjiniyela ukuthi bahlole kangconoizimo zokugeleza, ukufakwa kwenzwa, ukungaqiniseki kokulinganisa, kanye nokufaneleka kwemitha yokugeleza ye-ultrasonic kwisicelo esithile.