Umthetho Bernoulli sika. Vele nangempumelelo

Okunengi kwezwe elisizungezile ilalela imithetho yemvelo. Lokhu akusona isimanga, ngoba elithi "physics" lisuselwa egameni lesiGreki elisho ukuthi "uhlobo." Futhi omunye mithetho njalo esebenza elisizungezile, ke ngumlayo Bernoulli.

Ngu uqobo, umthetho ukhonza njengoba phetho isimiso ukulondolozwa amandla. Lokhu incazelo kusivumela ukuba amnike ukuqonda entsha imihlola eziningi ngaphambili owaziwa. Ukuze uqonde okushiwo umthetho ilula ngokwanele ukuba ukhumbule umsinga wamanzi ogelezayo. Lapha uyagijima, ugijima phakathi kwala matshe, iingojwana izimpande. Kwezinye izindawo liya livuleka njengoba zikhula, endaweni ethile kakade. Kungase kuqashelwe ukuthi lapho lokusakaza ebanzi, amanzi ageleza kancane, okuyinto vele, amanzi ageleza ngokushesha. Lesi isimiso Bernoulli, owenza izindlela ubuhlobo phakathi kwengcindezi ekusakazeni uketshezi ijubane ukugeleza ezinjalo.

Nokho, izincwadi physics it is washayelwa kancane ehlukile, futhi ihlobene hydrodynamics, hhayi umsinga wamanzi ogelezayo. Encwadini ngokwanele esihle ngendlela umthetho ka Bernoulli kungenziwa ngokufingqiwe kule samuntu - yokucindezela uketshezi ogeleza ipayipi lingaphezulu lapho Isivinini yayo incane futhi okuphambene nalokho lapho ayanda velocity, ingcindezi incane.

Ukuqinisekisa eyanele ukuze afeze ucwaningo elula. Kuyadingeka ukuthatha ephepheni bese nishaye ukuhamba ngayo. Iphepha liphuma phezulu ohlangothini kanye lapho ukugeleza komoya.

Kulula kabi. Njengoba umthetho Bernoulli, lapho ayanda ijubane, umfutho incane. Ngakho, kanye ebusweni ishidi, lapho ukugeleza komoya, ingcindezi incane, futhi ngezansi ishidi lapho kungekho ukugeleza komoya, ingcindezi mkhulu. Nalu uhlu antante ohlangothini lapho ingcindezi ingaphansi, okungukuthi, lapho ukusakaza emoyeni sihamba.

Umthelela ngenhla kabanzi ekuphileni kwansuku zonke futhi ubuciko. Njengoba isibonelo singacabangela isibhamu noma Airbrush. asetshenziswa Kulezi ngemibhobho emibili, elikhulu cross-section kunabanye. Yilokho of ububanzi emikhulu, exhunywe esitsheni ngopende, ngokuvumelana ukuthi ezincane esigabeni cross, kwelula nge high emoyeni velocity. Ngenxa umehluko ingcindezi ezivukayo upende ingena ukusakaza emoyeni futhi kulokhu kusakazwa udluliselwa ebusweni ukuba ngesineke.

Isimiso esifanayo ungase futhi usebenze futha. Empeleni, lokho okuchazwe ngenhla, futhi futha.

Ayikho ezithakazelisayo kancane umthetho we Bernoulli sika njengoba isetshenziswa amanzi kwamaxhaphozi. Njengenjwayelo, konke silula. Amaxhaphozi uxhuma ngaseziseleni ngasemfuleni. Ukugeleza emfuleni okungukuthi, ixhaphozi khona. Nalapha kunomehluko ingcindezi, futhi amanzi awo iqala sokukhipha kusuka sezwe exhaphozini. Senzeka ukuboniswa okumsulwa yomthetho physics.

Umthelela lo mphumela abagqoka futhi elimazayo. Ngokwesibonelo, uma kungena imikhumbi emibili kuyoba eduze komunye nomunye, the velocity yamanzi kuyoba ephakeme phakathi kwawo kunamanye. Ngenxa yalokho, kukhona amandla angeziwe ezokwenza ukuheha imikhumbi nomunye, futhi inhlekelele kuyoba akunakugwenywa.

Ingabe bonke kuthiwe ukweneka ngesimo amafomula, kodwa ezothando Bernoulli ukubhala akudingekile ukuqonda ubunjalo bomzimba walo mkhuba.

Ukuze uthole ukuqonda kangcono sikunikeza isibonelo esisodwa ngaphezulu ukusetshenziswa esachazwa umthetho. Zonke ukumela rocket. Ngo indawana ekhethekile iyona amandla omlilo uphethiloli, futhi kwakhiwa jet ukusakaza. Ukuze luhambe ngokushesha uhlelo usebenzisa tapered ngokukhethekile ingxenye - umlomo wombhobho. Kukhona esasizosheshisa igesi ukusakaza futhi ngaleyo ndlela - Ukukhula jet wagxila.

Zikhona ongakhetha eziningi ezahlukene ngokusebenzisa i umthetho Bernoulli e-inqubo, kodwa ababheke kohlaka lesi sihloko akunakwenzeka.

Ngakho, zavela umthetho Bernoulli, unikezwa incazelo engokoqobo of izinqubo ezenzeka ubunjalo ubuchwepheshe kanye izibonelo izicelo kungenzeka alo mthetho.