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Co je odstředivé čerpadlo? Jak to funguje?

V odstředivých čerpadel, stejně jako u všech turbomachines, tam je hlavní prvek nazvaný oběžné kolo, rotující úhlová rychlost kolem pevné osy. Nejjednodušší forma odstředivého oběžného kola je získávána centrálně (radiálními) křídly mezi dvěma rovnoběžnými kotouči. Kromě toho, jeden z disků je zahušťování kolem osy a připojuje se na míli. Jak je uvedeno na následujícím obrázku, tekutina částic uvnitř oběžného kola otáčí kolem rotační osy s rychlostí u = rωwith kolo, zatímco na druhé, se pohybuje podle kola s W-rychlost a listy. U Získá název relativní rychlosti rychlosti prostředí, W.

 

Když kapalina-naplněné oběžné kolo začne otáčet kolem osy, to začne vytékat z povrchu kapaliny B pod vlivem odstředivých sil. Tekutina absorbovaná z povrchu E je tedy vytištěna z povrchu B.

 

Tok vidět rotující pozorovatel s volantem se liší od toku pozorovatele v nehybném prostředí. Rychlost částice pohybující se v toku, podle stacionární pozorovatel v nehybném prostředí, má absolutní rychlost, rychlost relativní rychlost, že kolo vidí v místě, kde pozorovatel se točí s volantem.

 

Absolutní rychlost je vektorová suma C, W, a Vy rychlosti. S intenzitou a směr W a Vy rychlosti, tvoří obdélníkovou hranou. Tato prahová hodnota představuje absolutní rychlost obdélníku diagonální. Okraje obdélníku označují relativní rychlost W a okolní rychlost, v závislosti na intenzitě a směru násilí. Tak, tyto tři rychlosti tvoří trojúhelník. Ve výpočtech se nekonečný počet velmi tenkých křídel jednalo na myšlenku. V tomto případě je přijatelné, aby průtokové příze byly plně sledovány a aby krmivo bylo jedno rozměrové. V případě nenárazového vstupu je počátek křídla tečný k relativní rychlosti vstupu. S dalším výrazem, rychlost W1, který dělá β1 úhel s sací komory čerpadel, je ve stejném směru jako profil křídla. Stejně tak, W2 rychlost, která dělá β2 úhel s koncem křídla Exit, je ve stejném směru. Směr vstupu závisí na směru prvního křídla v vstupu a orientaci rychlosti vstupu, pokud je položka požadována, aniž by došlo ke zkreslení, a tím se předešlo ztrátám. U čerpadel končí kotouč pod β2 úhlem relativní rychlosti W2.

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