Dynamic Stability of Plane Free Surface of Liquid in Axisymmetric Tanks

Autor:	Siva Srinivas Kolukula, P. Chellapandi
Rok vydání:	2013
Předmět:	Materials science Article Subject Acoustics and Ultrasonics Plane (geometry) Slosh dynamics lcsh:QC221-246 Rotational symmetry Building and Construction Mechanics Instability Classical mechanics Amplitude Mechanics of Materials Free surface lcsh:Acoustics. Sound Potential flow Parametric oscillator
Zdroj:	Advances in Acoustics and Vibration, Vol 2013 (2013)
ISSN:	1687-627X 1687-6261
Popis:	When liquid filled containers are excited vertically, it is known that, for some combinations of frequency and amplitude, the free surface undergoes unbounded motion leading to instability, called parametric instability or parametric resonance, while for other combinations the free surface remains plane. In this paper, the stability of the plane free surface is investigated theoretically when the vessel is a vertical axisymmetric container. The effect of coupled horizontal excitation on the stability is examined. The dynamics of sloshing flows under specified excitations are simulated numerically using fully nonlinear finite element method based on non-linear potential flow theory. A mixed Eulerian-Lagrangian technique combined with 4th-order Runge-Kutta method is employed to advance the solution in time. A regridding technique based on cubic spline is applied to the free surface for every finite time step to avoid possible numerical instabilities.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56001e0cb46dfe137e65e1e1d0277b5c https://doi.org/10.1155/2013/298458 Zobrazit plný text záznamu Plný text ve formátu PDF