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Mikä on Keski pako pumppu? Miten se toimii?

Keski pako pumput, kuten kaikki turbomachines, on tärkein elementti nimeltä juoksu pyörä, pyörivä kulmikas nopeus ympärille kiinteän akselin. Yksinkertaisin Keski pako siipi pyörä on saatu keskitetysti (Radial) siivet kahden rinnakkaisen levyjä. Lisäksi yksi levyistä on paksuuntuminen akselin ympärille ja yhdistää mailin. Kuten seuraavassa kuvassa, nesteen hiukkasen sisällä juoksu pyörä pyörii pyörimis akselin kanssa nopeus U = rωwith pyörän, kun taas toisaalta, se liikkuu mukaan pyörän kanssa W-Speed ja lehdet. U saa nimen suhteellinen nopeus ympäristön nopeus, W.

 

Kun nesteen täyttämä juoksu pyörä alkaa pyöriä akselin ympärille, se alkaa nousta nesteen B pinnasta keskipakoisvoimien vaikutuksesta. Siten nesteen imeytymistä pinnasta E tulostetaan ulos pinnasta B.

 

Virtaus nähdään pyörivän tarkkailijan kanssa pyörän eroaa virtaus tarkkailija liikkuton ympäristössä. Nopeus hiukkasen liikkuvat sisällä virtaus, mukaan paikallaan tarkkailija liikkumaton ympäristö, on ehdoton nopeus, nopeus suhteellinen nopeus, että pyörä näkee pisteessä, jossa tarkkailija pyörii pyörän kanssa.

 

Absoluuttinen nopeus on vetoriaali summa C, W, ja voit nopeuksilla. Kanssa intensiteetti ja suunta W ja te nopeudet, ne muodostavat Suorakulmainen reuna. Tämä kynnys arvo edustaa suorakulmion diagonaalisen absoluuttista nopeutta. Suorakulmion reunat osoittavat suhteellinen nopeus W ja ympäröivän nopeuden teistä, riippuen intensiteetti ja suunta väki vallan. Niinpä nämä kolme nopeutta muodostavat kolmion. Laskelmiin, ääretön määrä hyvin ohuita siivet ovat toimineet ajatus. Tässä tapa uksessa on hyväksyttävää, että virtaus lankoja valvotaan täysin ja että rehu on yksi kolmiulotteinen. Jos tulo ei ole vaikutusta, siiven alku on tangentti suhteellisen syöttö nopeuden mukaan. Toisen ilmaisun, määrä W1, joka tekee β1 kulman saanti kammion pumppujen, on samaan suuntaan kuin siiven profiilia. Samoin W2 nopeus, joka tekee β2 kulman loppuun siiven Exit, on samaan suuntaan. Tulon suunta määräytyy merkinnän ensimmäisen siipi elementin suunnan ja tulo nopeuden suunnan mukaan, kun merkintää pyydetään tekemään ilman vääristymiä ja siten tappioiden välttämiseksi. Pumppuja, terä päättyy alle β2 kulmassa W2 suhteellinen nopeus.

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