Engineering Mechanics

Proceedings Vol. 21 (2015)

ENGINEERING MECHANICS 2015

21st INTERNATIONAL CONFERENCE
May 11 – 14, 2015, Svratka, Czech Republic

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Editors: Jiří Náprstek and Cyril Fischer

ISBN 978-80-86246-42-0 (printed, Extended Abstracts)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Acoustic Standing Waves in Primary Circuit of NPPs with WWER 1000 MW

L. Pečínka, M. Švrček
pages 224 - 225, full text

Acoustic standing waves in primary circuit of the NPPs with WWER 1000 MW reactor is possible classify as in whole primary circuit or only in reactor pressure vessel with partial penetration in the hot leg. Typical feature of these waves is the dependence on the coolant temperature which increase or decrease during increasing or decreasing of the reactor power. Exact solution of the eigenvalue problem represents the six order determinant. The first (lowest) frequency is influenced by the water volume in the pressurizer. To obtain the analytical solution the Whittaker method is applied to the original six order determinant. As the result we obtain the two order one and finally the very simply but exact equation is obtained.

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All papers were reviewed by members of the scientific committee.

Engineering Mechanics

International Conference

Proceedings Vol. 21 (2015)

ENGINEERING MECHANICS 2015