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DTU Wind EneTIiIY II--S Uolpartment of Wind EnerlilY
Experimental invesl!gatio~ of ice accretion on wind turbine . .....-1f.l~~rn~ltiOJI!,!rW~rl.d Energy.COI1!fer!!!'CE
• Climatic wind tunnel with icing conditions at Force Te,chrlOllo( in Kgs. Lyngby, Denmark
• Naca 64-618 profile - from LM Wind Power • Different angles of attack and temperature • Glaze and mix ice tests • MVD-25 micron • Ice accretion for 60 minutes ,-
• Re=900.000 - 1.000.000
- profiles profile 0' = 00
Iced profile - Glaze
o 0.2 OA 0.6 0.8 1
Iced profile - Mix
0.2 0.4 0.6
Lift Coeffic ients as a Function of T ime - Glaze '"'"
3000
2500
·WeighL of AccreLed Ice as a Funct ion of T ime - Glaze
<
et = 0"
, et = 4"
c o _ ~
, et = 9"
Lift Coefficients as a Function of Time - Mix
o
••
.,
•
_0.2 L __ ~ __ ~ __ ~ ___ ~ __ ~ __ ~ o 10 20 40 ~ 60
4000 Weight of Accreted Ice as a Punction of T ime - Mix
3500
JOOO
2500
1000
''"
o
•
_50o L __ ~ ___ ~ __ ~ ___ ~ __ ~ ___ ~ o 10 20 30
Time
"~
, "~
0 " ~ , 0 -
Linear ice accretion Dramatic lift coefficient degradation Most amount of ice accretion and least decrease in Cl for 9 deg AOA - glaze tests
I. Least amount of ice accretion and most decrease in CL for 0 AOA :;..~. - _ .... \li.".-. ""-
. -
Further plans:
• Include rime ice tests • Comparison of the three different ice tVDles! • Numerical analysis of the profiles
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