Laser doppler anemometry in hydrodynamic testing

Autor: Zivoslav Adamovic, Marina Kutin, Slavica Ristić, Mirjana Puharić
Rok vydání: 2007
Předmět:
Zdroj: Journal of Russian Laser Research. 28:619-628
ISSN: 1573-8760
1071-2836
Popis: Classical methods and the laser-Doppler-anemometry (LDA) application for the test section calibration of a water-cavitation tunnel is presented. The results show that the LDA is the best method for calibration and the classical methods satisfy the needs of standard tests. The advantages of the LDA are illustrated by determination of the pressure coefficient C p for a hydrofoil of a high-speed axial pump under the stationary and nonstationary conditions, as well. The velocity vector distribution is measured around the central hydrofoil of a straight grid for angles of attack δ = 0° and 25° and undisturbed velocity v ∞ = 5.32 m/s. The results of the LDA measurements are used as a basis for the definition of the boundary conditions for numerical flow simulation and C p calculation by the Fluent program. A flow visualization is made by aniline dyes and air bubbles.
Databáze: OpenAIRE
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