文档介绍：定温度型熱線風速計とX型プロ-ブの製作
小杉淳* ウドゥワゲチンタカ** 仁尾一義***
Making of the Constant Temperature Anemometer and X-Type Hot-Wire Prove.
ATSUSHI KOSUGI C. T. UDUWAGE KAZUYOSHI NIO
Abstract- HWA (Hot-Wire Anemometer)which most often used by turbulent measurements was
advanced in digitalization by uses DSP etc. . However it’s an analog type have the advantage by
which the real time measurement can be done and is still used widely now. The HWA instrumentation
system of the analog type which corresponded to the X-type probe that es necessary to
measure ponent of turbulence velocity field was built. Manufactured HWA is CTA(Constant
Temperature Anemometer) type, and it has the high-pass filter and the integration circuit as the
operation circuit and it is applicable in various turbulent measurements. The characteristic of CTA
was checked with a wind tunnel. As a result, it was confirmed that the CTA had a frequency
characteristic enough for the turbulent measurement.
Key Words : Hot-Wire Anemometer, CTA, X-Probe
。製作は、乱流場の 2 方向速度成分の同時計測に
風洞や水槽実験において速度場(風速分布や速度変対応できるようX型プロ-ブをセンサとする定温度型
動)の計測は、流体現象を解明する上で重要である。熱線風速計(CTA:Constant Temperature Anemometer)
この時、特に乱流に代表されるように速い速度変動をと、演算処理に必要な各種付属回路について行った。
伴う現象の測定には通常、熱線風速計(HWA :Hot Wire また、合わせてX型プロ-ブおよびその較正作業に必
Anemometer)、LDV(レ-ザ-ドップラ流速計)、超音要な首振りサポ-トなどについても製作を行い、小形
波流速計などが用いられ、また最近では PIV や PTV(粒吹出し型風洞を用いて製作したX型熱線風速計システ