E XPERIMENTAL STUDY ON SNOW FALLING FLOW CONTROL EFFECT OF HIGH DURABILITY PLASMA ELECTRODE

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Using a high durability designed plasma electrode (PA), the effect of snowfall flow control w as experimentally inv estigated for both a NACA 0015 blade model and a two dimensional backward facing step flow model. PIV measurements using a dry snowflake as a tracer showed that the snowfall flow could be controlled, and that a velocity increasing regi on was generated in t he separated shear layer when the PA was driven. Moreover, from the results of the snow accumulation test ( Re 1.4×10 4 ), it became clear for the first time that the amount of snow accumulated in the two dimensional, backward facing step flow could be reduce d when the PA was driven. The possibility of us age the high durability plasma electrode as a flow control device for a wind turbine in the snowy cold regions became clear.