Full metadata record
DC FieldValueLanguage
dc.contributor.authorJančík, Petr
dc.contributor.authorHyhlík, Tomáš
dc.date.accessioned2022-01-13T06:51:07Z
dc.date.available2022-01-13T06:51:07Z
dc.date.issued2021
dc.identifier.citationApplied and Computational Mechanics. 2021, vol. 15, no. 2, p. 153-174.en
dc.identifier.issn1802-680X (Print)
dc.identifier.issn2336-1182 (Online)
dc.identifier.urihttp://hdl.handle.net/11025/46604
dc.format22 s.cs
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherUniversity of West Bohemiaen
dc.rights© University of West Bohemiaen
dc.subjecttok volným povrchemcs
dc.subjectnárazový tlakcs
dc.subjectnárazová sílacs
dc.subjectCFDcs
dc.titleKinematic and dynamic analysis of dam break flow impact on vertical walls using weakly compressible SPHen
dc.typečlánekcs
dc.typearticleen
dc.rights.accessopenAccessen
dc.type.versionpublishedVersionen
dc.description.abstract-translatedThis article presents the kinematic and dynamic analysis of a dam break flow based on data obtained from numerical solutions by the smoothed particle hydrodynamics (SPH) method. The method and original algorithms necessary for correct pressure evaluation are thoroughly described. The pressure evaluation method consists of data reading using virtual sensors and filtration in the time domain using the weight function. A simple convergence study showing the independency of the evaluated parameters of spatial resolution is presented together with validation of the introduced methods and algorithms using a simple hydrostatic problem and experimental data available in the literature. We focus on two parameters that describe the problem: distance of the downstream vertical wall from the edge of the liquid column and the column’s height to width ratio. We found that the impact can be divided into three consecutive phases characterized by specific kinematic (flow patterns) and dynamic (exerted pressure and forces) behavior and different roles of the investigated parameters during these phases. During the early stages of an impact, the column’s distance from the vertical wall plays a major role. A dependency between the column distance and the force peak in this stage was identified in the form of a power function. In the second stage, when a rolling wave emerges, the vertical wall position influences the shape of the wave and the pressure distribution on the wall. The total force is greater in this phase for lower column height to width ratios due to the higher total momentum of the liquid. In the third stage, when the rolling wave impacts the liquid surface, the employed methodology with two-dimensional solution and free-surface approach seems to reach its limits of applicability. A more complex modelling would be necessary to capture this phase of the impact properly.en
dc.subject.translatedfree-surface flowen
dc.subject.translatedimpact pressureen
dc.subject.translatedimpact forceen
dc.subject.translatedCFDen
dc.identifier.doihttps://doi.org/10.24132/acm.2021.643
dc.type.statusPeer-revieweden
Appears in Collections:Volume 15, number 2 (2021)
Volume 15, number 2 (2021)

Files in This Item:
File Description SizeFormat 
643-4215-1-PB.pdfPlný text7,41 MBAdobe PDFView/Open


Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/46604

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.