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The Study of the Depression Occurred under Different Types of Impellers

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Abstract:

The paper presents the analytical solution used to calculate the depression which appears under different types of impellers. This solution can be useful as a preliminary calculus to estimate the magnitude of the depression created at different rotational speeds, in order not to damage the equipment from different systems, such as hydraulic turbines. The authors obtain the variable radius of the depression zone, the pressure inside the depression zone and the depression height. The theoretical approach, the calculus itself and the numerical results presented in the article are original. In order to validate the proposed calculus, experiments were carried out using two experimental setups. The performed measurements showed a good agreement of the experimental and theoretical results.

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Periodical:

Applied Mechanics and Materials (Volume 841)

Pages:

116-121

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.841.116

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Online since:

June 2016

Authors:

Lucian Mândrea*, Gabriela Oprina, Corina Băbuţanu, Dorian Marin, Gabriel Negreanu

Keywords:

Accelerated Circular Movement, Depression Zone Characteristics, Impeller

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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