I-aerodynamics yesimanje isebenza ngomunye wemiphumela ebalulekile eba mqoka ezindizeni ukundiza. Lo mphumela waziwa njenge Umphumela weCoanda. Umphumela weCoanda kuyinto enzima ukuyichaza kepha iba yinto ebaluleke kakhulu ngendlela yokuthi ibe yisisekelo sokuthuthukiswa kwezimoto zasemoyeni.
Kulesi sihloko, sizokutshela ukuthi uyini umphumela we-Coanda nokubaluleka kwawo.
Uyini umphumela weCoanda
Ukuze uchaze ukuthi uyini lo mphumela, cabanga ngekhandlela elikhanyayo. Uma silicisha lelikhandlela kuzovele kube ngokuphazima kweso. Uma senza umsebenzi ofanayo kodwa sibeka ibhokisi losayizi ozwakalayo phakathi kwekhandlela nathi. Into evamile kakhulu ukucabanga ukuthi uma siphephetha, umoya uzohlakazeka nhlangothi zombili futhi ngeke ushaye useyili. Nokho, uma sisebenzisa ibhodlela lewayini esikhundleni sebhokisi, umphumela ngeke ufane. I-Logic isiholela ekucabangeni ukuthi umoya uzophinde uhlakazeke nhlangothi zombili futhi ngeke ucime ikhandlela.
Yize kubonakala kumangaza ngandlela thile, ikhandlela lingacinywa ngenxa yomphumela weCoanda. Futhi ingabe leyo Umphumela weCoanda uchaza ukugobeka koketshezi lapho kuhlangana nomzimba oqinile. Uketshezi luthola ushintsho ekuhambeni nasekuhambeni lapho lushayisana nomzimba oqinile.
Kungashiwo ukuthi umphumela weCoanda ngu uchungechunge lwezehlakalo ezikwazi ukuchaza ukusebenza koketshezi lapho lushaya phezulu. Isetshenziswa njengesimiso esisho ukuthi lonke uketshezi luvame ukukhangwa ezindaweni eziseduze kunokubhampa noma ukuchezuka. Lokhu kuphambene nalokho okwenzeka ngesiqinile. Uma okuqinile kushayisana nokunye okuqinile, kuvamile ukuthi kugxume futhi kuphambuke emgudwini walo. Nokho, endabeni yoketshezi, bakhangwa ebusweni bokuqina.
Ukuze ujule kwezondiza, kutuswa ukutadisha izimiso ezilawula ukuhamba kwezindiza.
Linga ukuqinisekisa umphumela weCoanda
Uma senza isivivinyo esingenhla, siyabona ukuthi umoya uvame ukulandela indlela egobile yebhodlela esikhundleni sokuchezukela ezinhlangothini. Uma siphonsa ibhola lethenisi ebhodleleni lewayini, siyabona ukuthi umzila webhola uzoshintshwa, kepha ngeke ufane nomugqa webhodlela. Lokhu kusisiza ukukhipha imininingwane edingekayo ku- yazi ukuthi uketshezi luzolandela indlela ezungeze okuqinile.
Ngamagama alula, i-viscosity yomoya iyi-ejenti eyinhloko yokuthi umphumela we-Coanda wenzeke. Lapho uketshezi luqala ukuba nomthelela emzimbeni onokwakheka okubushelelezi, okugobile, i-viscosity yoketshezi yikho okwenza izinhlayiya zithande ukunamathela ebusweni bokuqinile. Yile ndlela ishidi lomfaniswano kanye ne-parallel elidalwe ngayo emzimbeni we-solid. Lokhu kuthambekela kokwenza uhlobo lweshidi ezungeze i-contour yomzimba kungafaniswa ne-plasticine.
Zonke izinhlayiya ezisemanzini, kulokhu umoya, kamuva ziba nomthelela emzimbeni futhi zikhiqize izendlalelo ezintsha ezifanayo nezokuqala. Le yindlela ukuphambuka okwenziwa ngayo endleleni yoketshezi.
Ukusebenziseka nokubaluleka
Umphumela weCoanda ukhonjisiwe futhi usetshenziswa nsuku zonke ekundizeni kwezindiza nokugijima kwezimoto. Kubalulekile ukuqonda ukuthi, ukuze kuthuthukiswe i-morphology yemoto, umphumela wokushayisana komoya ubalulekile. Uma sazi ukuthi izinhlayiya zoketshezi zinamathela phezulu, singaklama izimo ezingcono ze-aerodynamic. Isibonelo esisetshenziswa njalo somphumela we-Coanda izimoto ze-Formula 1 ezinesihlalo esisodwa. Indawo enamaphontoni aseceleni isebenzisa ithuba lomphumela we-Coanda ukuze idlulise inani elikhulu lomoya ezindaweni ezithize, njengendawo engaphansi, i-diffuser, nama-spoiler. Zonke lezi zici zesihlalo esisodwa zithinta ngqo ukubamba noma isivinini esiphezulu.
Lokhu kwenze umphumela we-Coanda waba ngenye yezinsika ezibalulekile zezemidlalo nezokundiza. Kwenzeka okufanayo nangezindiza. Emaphikweni, indlela yomoya ijika kancane okusiza ukukhiqiza amandla agcina indiza isemoyeni. Umoya ugobile futhi, kanye nokucindezeleka kanye nomthetho wesithathu kaNewton, siyawazi wonke amandla asebenza ophikweni lwendiza.
Ngenxa yomphumela we-Coanda, ukugeleza komoya nokunye uketshezi kungalungiswa futhi kuqondiswe, okuvumela onjiniyela ukuba baklame izindlela zokuthutha ezisebenza kahle kakhulu. Leli thonya lomphumela we-Coanda ku-aerodynamics yemoto kuyinto ebalulekile ekwakheni izimoto eziphephile futhi ezisheshayo. Ngaphezu kwalokho, le miklamo ye-aerodynamic isiza ukonga amanani abalulekile kaphethiloli, njengoba isiza ekunciphiseni ukungqubuzana komoya.
Izici kanye nelukuluku
Umthelela we-Coanda uhlobene nokuvezwa koketshezi ezizungeze into. Uma sihlaziya wonke amandla kanye nokucindezela komkhathi umoya osemkhathini owenzayo endizeni enejubane eliphansi, umoya awubhekwa njengoketshezi nje kuphela, kodwa uketshezi olungenakucindezelwa. Iqiniso lokuthi umoya uwuketshezi olungenakucindezelwa kusho ukuthi umthamo wesisindo somoya uzohlala ungashintshi ngokuhamba kwesikhathi. Kufanele futhi sazi ukuthi ukugeleza komoya akuhlukani komunye nomunye ukuze kwakheke ama-voids, abizwa nangokuthi izikhala.
Kukhona ososayensi abaningi abaphikayo ukuthi umphumela we-Coanda uyenzeka emanzini. Kuthiwa lokhu kuchezuka komzila wamanzi uma eshayisana nomzimba oqinile kudalwa ukushuba kwesimo. Ngakho-ke, kungashiwo ukuthi umphumela we-Coanda awusetshenziswa kuzo zonke izinhlobo zoketshezi, ngoba ukuminyana kanye ne-viscosity yoketshezi kufanele kucatshangelwe. Siyazi ukuthi umoya une-viscosity ephansi, ngakho-ke umphumela weCoanda wenzeka ngamandla amakhulu.
Ngiyethemba ukuthi ngalolu lwazi ungafunda kabanzi ngomphumela weCoanda nokubaluleka kwawo kwezindiza nokugijima kwezimoto.