F131 遷音速流れ場流速分布の回復温度からの推定

概要

論文の詳細を見る
Air flow velocity field in a critical nozzle was measured using a very thin thermocouple supported from a XY traverse. The measurement is based on the constant Prandtl number different from unity, that is, the thermocouple indicates the recovery temperature at the contact point, which is a function of the flow velocity. The thin thermocouple is shown not to change the discharge coefficient by monitoring the mass flow using another critical nozzle connected in series at the upstream location, so the measurement can be considered to be essentially non-intrusive. Measurements on a critical nozzle complying with ISO9300 were carried out at various pressure ratios. Flow structure such as the oblique shock originated at the contact point of the torus and the conical parts, and normal shock, location of which depends on the pressure ratio, were detected.
日本流体力学会の論文
2001-07-31