Numerical Investigation of Water Entry Problem of Pounders with Different Geometric Shapes and Drop Heights for Dynamic Compaction of the Seabed
Joint Authors
Chavoshi, Elham
Taghizadeh Valdi, Mohammad Hossein
Atrechian, Mohammad Reza
Jafary Shalkoohy, Ata
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-02-06
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
The water entry problem of three-dimensional pounders with different geometric shapes of cube, cylinder, sphere, pyramid, and cone was numerically simulated by the commercial software Abaqus, and the effects of pounder shape and drop height from the free surface of water on deepwater displacement and velocity as well as pinch-off time and depth were investigated.
An explicit dynamic analysis method was employed to model fluid-structure interactions using a Coupled Eulerian-Lagrangian (CEL) formulation.
The simulation results are verified by showing the computed shape of the air cavity, displacement of sphere, pinch-off time, and depth which all agreed with the experimental results.
The results reveal that the drag force of water has the highest and lowest effect on cubical and conical pounders, respectively.
Increasing the pounder drop height up to the critical height leads to increased pounder velocity while impacting the model bed and more than the critical drop height has a reverse effect on pounder impact velocity.
Pinch-off time is a very weak function of pounder impact velocity; but pinch-off depth increases linearly with increased impact velocity.
American Psychological Association (APA)
Taghizadeh Valdi, Mohammad Hossein& Atrechian, Mohammad Reza& Jafary Shalkoohy, Ata& Chavoshi, Elham. 2018. Numerical Investigation of Water Entry Problem of Pounders with Different Geometric Shapes and Drop Heights for Dynamic Compaction of the Seabed. Geofluids،Vol. 2018, no. 2018, pp.1-18.
https://search.emarefa.net/detail/BIM-1158101
Modern Language Association (MLA)
Taghizadeh Valdi, Mohammad Hossein…[et al.]. Numerical Investigation of Water Entry Problem of Pounders with Different Geometric Shapes and Drop Heights for Dynamic Compaction of the Seabed. Geofluids No. 2018 (2018), pp.1-18.
https://search.emarefa.net/detail/BIM-1158101
American Medical Association (AMA)
Taghizadeh Valdi, Mohammad Hossein& Atrechian, Mohammad Reza& Jafary Shalkoohy, Ata& Chavoshi, Elham. Numerical Investigation of Water Entry Problem of Pounders with Different Geometric Shapes and Drop Heights for Dynamic Compaction of the Seabed. Geofluids. 2018. Vol. 2018, no. 2018, pp.1-18.
https://search.emarefa.net/detail/BIM-1158101
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1158101