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kritische Reynolds-Zahl Kreisring

Fragen, Antworten und Diskussion zum Thema Strömungsmechanik.

kritische Reynolds-Zahl Kreisring

Beitragvon JoFi85 am Do 17. Okt 2013, 10:14

Hallo,
ich habe ein Rohr mit Kreisring-Querschnitt durch das Öl fließen soll. Das Rohr ist ca. 3m lang.
Ich weiß das die kritische Reynolds-Zahl für kreisrunde Rohre bei 2320 liegt.
Ist das Bei Rohren mir Kreisring-Querschnitt genauso? Ich habe nämlich gelesen das bei Durchflüssen durch konzentrische Spalte die kritische Reynolds-Zahl bei 1100-1200 liegt. Habe auch ein Bild eingefügt, indem man sieht wie der Querschnitt ist.
Bin mir nicht sicher welchen Wert ich annehmen muss.

Vielen Dank
Mit freundlichen Grüßen

JoFi85
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JoFi85
 
Beiträge: 1
Registriert: Do 17. Okt 2013, 10:00

Re: kritische Reynolds-Zahl Kreisring

Beitragvon alieen am Mi 3. Dez 2014, 12:53

Ist das Bei Rohren mir Kreisring-Querschnitt genauso? Ich habe nämlich gelesen das bei Durchflüssen durch konzentrische Spalte die kritische Reynolds-Zahl bei 1100-1200 liegt. Habe auch ein Bild eingefügt, indem man sieht wie der Querschnitt ist.
alieen
 
Beiträge: 1
Registriert: Mi 3. Dez 2014, 12:49

Re: kritische Reynolds-Zahl Kreisring

Beitragvon tonny am Mo 4. Jul 2016, 19:12

War doch richtig gut
"Alles ist schlechter geworden. Nur eins ist besser geworden: Die Moral ist schlechter geworden!" (Dieter Hallervorden)
tonny
 
Beiträge: 39
Registriert: Fr 19. Dez 2014, 16:38


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