流体摩擦計測用熱線プローブの特性

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  • リュウタイ マサツ ケイソクヨウ ネッセン プローブ ノ トクセイ
  • Characteristics of Hot Wire Probe for Wall Skin Friction Measurement

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For the purpose of measuring the instantaneous wall skin friction in the fluctuating internal flow, a new type hot wire probe is manufactured and its characteristics are examined experimentally using a special calibration apparatus. And it is compared with the hot flim probe. The manufactured probe is consisted of 5μ dia. tangsten wire and its traversing gear, and the wire is located at 0.03 mm high from the wall for measuring wall friction. This probe has an almost same sensitivity as the flush mounting hot film probe, and there is little effect of the probe surrounding material on the sensitivity because of a little heat loss to the surroundings. If a hot wire is in contact with the wall, the probe sensitivity decreases and the heat loss increases in comparison with a detached hot wire.

長崎大学工学部研究報告, (13), pp.23-28; 1979

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