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Winkelgeschwindigkeit / Drehzahl eines Windrads • Maschinenbau-Forum
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Winkelgeschwindigkeit / Drehzahl eines Windrads

Alles zum Thema Statik, Kinematik & Dynamik.

Winkelgeschwindigkeit / Drehzahl eines Windrads

Beitragvon antoscha am Di 4. Mai 2010, 21:06

Hallo liebe maschinenbauer :)

Wir arbeiten an einem projekt in dem wir eine vertikale windkraftanlage bauen müsssen.

wenn man unser prinzip vereinfacht, dann ähnelt es einem windmesser/ anemometer
http://www.wassersport-kellermann.de/pics/windmesser/anemo.jpg

nun zu unserem problem:
wenn wir das produkt in einen wind von 10 m/s stellen.....wie können wir die drehzahl des produkts bestimmen.
wir versuchen es gerade über die winkelgeschwindigkeit, aber kommen auf keine wert der uns realistisch erscheint :(

wäre echt super wenn ihr uns helfen könntet! danke
antoscha
 
Beiträge: 1
Registriert: Di 4. Mai 2010, 20:59

Re: Winkelgeschwindigkeit / Drehzahl eines Windrads

Beitragvon Nimrod am Fr 16. Jul 2010, 11:36

Also,zunächst gilt natürlich 1.Semester:
Physik I: Umfangsgeschwindigkeit: u = r* ω= r* ((π*n)/30)) nach n umstellen.
Hierbei gilt ω=konst ---> n = konst auf dem gesamten Schaufelprofil.
Achtung: u ändert sich mit dem Radius r, da ω=konst.
Die Relativgeschwindigkeit und die Strömungsgeschwindigkeit (vor und nach dem Laufrad) ist abhängig von der Gemometrie des Schaufelprofils (7.Semester)
Formeln hierfür siehe Strömungsmaschinen: Kraftmaschinen=Turbinen: Formeln zur Auslegung der Laufradgeometrie.

Gruß Nimrod
Nimrod
 
Beiträge: 36
Registriert: Di 1. Dez 2009, 17:38


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