Iteraa i te tau Reynolds

Ko te hunga e matara atu ana i te ahupūngao, te whakatapua. Tīmata i te kuputuhi te kore e kore e taea e ahau, no te mea te maha o Reynolds fakatāutaha kihai i meinga e ahau tetahi whakautu i roto i te wahi o te matauranga o te wahi ki te rokiroki i te mōhiohio i roto i te te ahupūngao. Kia tamata o ki te whakaki i tenei āputa.

Hei whakamahana whakamārama he aha a Osborne Reynolds i wa kotahi i roto i to ratou mara. Ko tenei pūtaiao he māngai o te Ingarihi (etahi puna - Irish) hapori pūtaiao i roto i nga mara o te ahupūngao, engineering me Hydraulics. Fanauhia i roto i te 1842, i muri i 28 nga tau, ka e ia he ahorangi i te tari o te pūhanga manawa hanganga i roto i Cambridge. arahina tona rangahau ki e whakaaro ki te whanonga o inu i roto i te laminar (papanga) me ririhau (vortex) rere. Ko ia te tohatoha o te paearu tau o te whakawhitinga o tetahi momo o te akoranga ki tetahi. mohiotia ana tēnei rahinga te ki tatou rite te tau Reynolds.

He aha te mea te tikanga o? E kore te mea tamau tenei tawhā me ko he tetahi ōwehenga o ope inertial me te waku ā i roto i te rere wai. Ka rite ki tirohia ki te paearu whakamahia Re. Ki te whakaaro ki ngā waeine o te mehua, ka i reira he kahore, no te mea te tau Reynolds mo wai, haurehu me tetahi atu reo ko te rahinga rahi (tau ia se).

He pono tika faatura manawanui English pūtaiao, nei i ki te whakapau ake i te kotahi rau whakamātautau ki te tautuhi i te pā ana taua. i taea e ki te tāutu i te tauira e whai ake nei e ia: i reiti teitei (neke atu i te 2 - 3 miriona), ko tino ririhau te rere te wai, a mo te iti - tino laminar.

E rave rahi o teie mau tātaitanga tirohia ki te pānuitanga i whiwhi nei empirically anake, ka huri ranei tāruarua mure ore ai "hinga atu" o te tāpare o nāianei. Heoi, he maha rawa pai tona tikanga ratou i te hi'oraa o te ture a Newton. I roto i ngā ohie, te awa inu he tetahi tūpuku me whangai ana ki te mau tonu tona kaupapa i te tere kotahi.

Ko te faufaa o tenei paearu, kia rite ki raraunga i ngā puna, e taea e kore te amuitahiraa. Ko parau tenei uara me te parau tumu o tona production tatou e kore te mea pera nui ti'aturi i runga i te tere, tūpuku me te waku, te nui o to ratou pāhekoheko te pānga o te taiao (te wai, hau atu taonga ranei). Ko tenei taunekeneke me te kitea i roto i te ōwehenga, e kiia nei ko te "tau Reynolds". Hoki te wai, te kaupapa o nei puta haere te takere kuiti (korere ranei), "Edge" tohu ka whakawhiti uara nui te tohu 12000 - ātete 20000. He hua o ka nui ake te reo. ka wai i roto i te wāhi tuwhera, me waho o te pikitia kia kōaro: te whakanui ake i ngā uara tau Reynolds ka whakaiti i te parenga.
Tona whakamahi o tenei paearu i roto i rehe inu kore anake, engari ano hoki i roto i te rererangi me te pahi. Hei tauira, ko reira te tau Reynolds taea whakamātautau pono o tauira rererangi hou, tino te tārua i te mahi tūturu o te rere o te hau i roto i te tauira iti.

e kore e PS e pirau tātaitanga tātai kawea ma te mana'o: ki te te kaipānui hiahia i roto i tenei kaupapa, te ako i te tikanga o te tātaitanga o taua nui e kore e waiho uaua.