Kuziva Reynolds nhamba

Avo vari kure wefizikisi, unotsaurirwa. Tanga mashoko zvimwe Handigoni, nekuti kuwanda Reynolds pachake handina kukonzera chero mhinduro iri chikamu ruzivo yokuchengetera apo mashoko wefizikisi. Ngatiedzei kuzadza gwanza ichi.

Ushamwari kujekesa chii Osborne Reynolds ari imwe nguva mumunda yavo. musayendisiti ichi chaiva mumiririri Chirungu (mamwe manyuko - Irish) masayendisiti muminda wefizikisi, engineering hydraulics. Akaberekwa muna 1842, pashure pemakore 28, akava purofesa weDhipatimendi STRUCTURAL hurongwa mu Cambridge. tsvakurudzo ake kwakaita kuti nehanya maitiro Urume mu laminar (layered) uye inonetsa (vortex) chokubuda. Kuti iye ndiye mugove ane nhamba yokuona munhu kuchinja mumwe mhando Chokwadi kune mumwe. Izvi uwandu anozivikanwa kwatiri sezvo Reynolds nhamba.

Ko zvinorevei? parameter ichi hachisi kugara uye ndiyo imwe reshiyo pakati inertial mauto uye munyika kukweshera mune mvura chokubuda. Sezvo kureva chokuratidza kushandiswa Re. Panyaya vezvikwata nechiyero, saka hapana, nokuti Reynolds nhamba mvura, magasi uye mumwe svikiro iri dimensionless kwazvo (nhamba pa Se).

Hapana mubvunzo anofanira kuremekedza kutsungirira Chirungu musayendisiti, uyo aifanira kupedza vanopfuura zana miedzo kuziva yomumba yakadaro. Akakwanisa kuziva zvinotevera muenzaniso: panguva yakakwirira prices (anopfuura 2 - 3 mamiriyoni), mvura iyerere anonyatsokwanisa yakanyongana, uye nokuda diki - chose laminar.

Vakawanda Masvomhu aya anoreva kuverengwa dzakanga ndawana chete empirically, uye kushandura kana haaperi kudzokororwa anogona "kuwa kubva" ari kuitika puranga. Zvisinei, vakawanda zvikuru kubudirira kuhududzira mumaonero kwemitemo Newton vake. Zviri nyore, kuti mvura murukova ane mumwe inertia uye kunoita kuti tirambe sangano rayo nenguva nokukurumidza.

Kukosha chokuratidza ichi, maererano nemashoko hwatingawana siyana, hunokosha. Ndicho ichi kukosha uye nheyo dzayo kugadzirwa rinotitaurira kuti matambudziko kwezvakatipoteredza (mvura, gasi kana zvimwe zvacho) haasi chaizvo novimba nokukurumidza, inertia uye kukweshera, sei zvakawanda kudyidzana kwavo. Hazvina kudyidzana ichi uye zvinoratidzwa reshiyo, unonzi "nhamba Reynolds". Nokuti mvura, kufamba kunoitika pamwe wakamanikana migero (kana sepombi), "Kunogumira" chakarurama kuchaita sanduko ukoshi akapfuudza chinoratidza 12000 - 20000. An kuwedzera kuramba ari svikiro kuchawedzera. Water napadare uye kunze mufananidzo achapiwa inverted: kuwedzera Reynolds nhamba tsika kuchaderedza ari kurwisa.
kushandisa kwaanoita chokuratidza uyu kwete chete Urume Vanamakanika, asi avhiyesheni uye shipbuilding. Somuenzaniso, ndiye Reynolds nhamba anobvumira nekuongororwa yakavimbika yokutevedzera itsva ndege, zvakazara rinozvibereka Zvakaitwa chaiye dzekudenga aibuda mune shoma womuenzaniso.

PS Amene kukarukureta payakavakirwa hakuiti nechinangwa: kana muverengi vanofarira nyaya ino, dzidza murayiro kukarukureta Huru kwakadaro hakuzovi kwakaoma.