Kupeza Reynolds chiwerengero

Anthu amene ali kutali ndi sayansi, ali odzipereka. Yambani lemba mwinamwake ine sindingakhoze, chifukwa chiwerengero cha Reynolds panokha Ine sanazichite ayankhe aliyense mu gawo la chidziwitso cha kumene kusunga mfundo sayansi. Tiyeni tiyese kudzaza kusiyana izi.

Kumalimbikitsa kufotokozera Osborne Reynolds nthaŵi ntchito yawo. wasayansi ameneyu anali woimira English (ena magwero - Irish) asayansi m'minda ya sayansi, zomangamanga ndi hydraulics. Anabadwa mu 1842, patatha zaka 28, anakhala katswiri pa dipatimenti okonzera kandalama Cambridge. kafukufuku zinachititsa kuti amanditenga khalidwe la madzimadzi mu laminar (magawo) ndi chipwirikiti (mmene kanyamaka) otaya. Kuti iye ndi Kugawilidwa kwanthaka wa muyezo n'zosangalatsa kumva za kusintha kwa mtundu wina kumene ndi mzake. kuchuluka Izi kudziwika kwa ife ngati nambala Reynolds.

Kodi tanthauzo la? chizindikiro ichi si nthawi zonse ndipo ndi chiŵerengero ena a mphamvu inertial ndi mikangano mkati mu otaya madzi. Monga amatchula muyezo ntchito Re. Pankhani mayunitsi muyeso, ndiye palibe chifukwa Reynolds nambala madzi, mpweya ndi sing'anga ina ndi kuchuluka dimensionless (chiwerengero pa Seraya).

Mosakayikira lofunika kwa opirira English wasayansi, yemwe anali kucheza ndi mayesero opitirira zana asankhe ubale amenewa. Iye anali kudziwa chitsanzo izi: pa ziwawa (oposa 2 - 3 miliyoni), otaya madzi kwathunthu chipwirikiti, ndi yaing'ono - kwathunthu laminar.

Ambiri a kuwerengetsera akutchula za kuwerenga zomwe zimapezeka empirically yekha, ndi kusintha kapena wopandamalire kubwerezabwereza mwina "dana" wa chimango panopa. Komabe, ambiri ndithu bwinobwino kuwamasulira iwo pamaso pa malamulo Newton. Mawu osavuta, mtsinje madzimadzi ali inertia zina ndi amamuchititsa kukhala kayendedwe ake pa liwiro.

Kufunika kwa muyezo imeneyi, malinga ndi kafukufuku magwero osiyanasiyana, sangathe n'kofunika. Ndi mtengo uwu ndi mfundo za ulimi ake amatiuza kuti zotsatira za chilengedwe (madzi, mpweya kapena thunthu zina) si choncho amadalira kwambiri pa liwiro, inertia ndi mikangano, mmene zikuyendera mogwirizana. Ndi zimachitika izi ndi umaonekera alionse, chimene chimatchedwa "Reynolds chiwerengero". Kwa madzi, kayendedwe ka lomwe limapezeka pamodzi mitsinje yopapatiza (kapena machubu), "Kudera" chizindikiro adzakhala kusintha mtengo kuposa chizindikiro 12000 - 20000. An kuwonjezeka kukana sing'anga kwambiri. Madzi mu mlengalenga poyera ndi kunja chithunzi adzakhala kukalowa: kuwonjezera Reynolds mfundo nambala kuchepetsa kukana.
ntchito muyeso imeneyi sanali kokha mu zimango madzimadzi, komanso mu ndege ndi shipbuilding. Mwachitsanzo, ndi nambala Reynolds amalola kuyezetsa odalirika zitsanzo latsopano ndege, kwathunthu kubereka kanthu weniweni wa otaya mpweya chitsanzo yafupika.

PS Okha mawerengedwe chilinganizo wosatenga ndi cholinga: ngati owerenga chidwi nkhaniyi, kuphunzira dongosolo la mawerengedwe zoopsa zimenezi, kudzatithandiza kukhala kovuta.