Development of a Hot-Wire Probe with Two Parallel Wires Placed Closely Together
スポンサーリンク
概要
- 論文の詳細を見る
We manufactured a new hot-wire probe with two parallel wires placed closely together for measuring a transitional boundary-layer flow. The main feature of this new probe is that it is much smaller than a conventional multi-sensor probe, such as an X-type probe. Thus, the new probe can be regarded as a sensor similar in configuration to a single normal probe and is expected to provide high spatial resolution for fluctuating velocities in a transitional boundary layer. The measurement principle is very simple, as the streamwise and the normalwise velocity components are simultaneously obtained from the sums and the differences of the linearized outputs of two hot-wire circuits with the aid of the look-up-matrix method. It was found that the complicated relations between the hot-wire-circuit outputs and the flow angle can be simplified by limiting the flow angle to within θ = ±30 deg. The new hot-wire probe was used to measure the velocity profiles in a low Reynolds number turbulent boundary layer. The results revealed that the probe is a useful tool for measuring velocities in a transitional boundary layer having a thickness of only several mm.
論文 | ランダム
- 自治体によるため池調査の意義と課題--島根県平田市での取組みを例として (特集 ため池は,いま)
- 日本における学士学位プログラムの現況 (特集 学士学位プログラム)
- 第1章 比較的考察 (高等教育ユニバーサル化の衝撃(1)) -- (第1部 高等教育ユニバーサル化のインパクト)
- 宮沢光一著「経済分析と決定理論」
- ルールベースによるゲートアレイの配置手法