Numerical Investigation of Water Entry Problem of Pounders with Different Geometric Shapes and Drop Heights for Dynamic Compaction of the Seabed
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 an...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2018/5980386 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850172435299565568 |
|---|---|
| author | Mohammad Hossein Taghizadeh Valdi Mohammad Reza Atrechian Ata Jafary Shalkoohy Elham Chavoshi |
| author_facet | Mohammad Hossein Taghizadeh Valdi Mohammad Reza Atrechian Ata Jafary Shalkoohy Elham Chavoshi |
| author_sort | Mohammad Hossein Taghizadeh Valdi |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-c77c882fd9c24876a57d7a01c8264b58 |
| institution | OA Journals |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-c77c882fd9c24876a57d7a01c8264b582025-08-20T02:20:06ZengWileyGeofluids1468-81151468-81232018-01-01201810.1155/2018/59803865980386Numerical Investigation of Water Entry Problem of Pounders with Different Geometric Shapes and Drop Heights for Dynamic Compaction of the SeabedMohammad Hossein Taghizadeh Valdi0Mohammad Reza Atrechian1Ata Jafary Shalkoohy2Elham Chavoshi3Department of Civil Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, IranDepartment of Civil Engineering, Zanjan Branch, Islamic Azad University, Zanjan, IranDepartment of Civil Engineering, Bandar Anzali Branch, Islamic Azad University, Bandar Anzali, IranDepartment of Civil Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, IranThe 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.http://dx.doi.org/10.1155/2018/5980386 |
| spellingShingle | Mohammad Hossein Taghizadeh Valdi Mohammad Reza Atrechian Ata Jafary Shalkoohy Elham Chavoshi Numerical Investigation of Water Entry Problem of Pounders with Different Geometric Shapes and Drop Heights for Dynamic Compaction of the Seabed Geofluids |
| title | Numerical Investigation of Water Entry Problem of Pounders with Different Geometric Shapes and Drop Heights for Dynamic Compaction of the Seabed |
| title_full | Numerical Investigation of Water Entry Problem of Pounders with Different Geometric Shapes and Drop Heights for Dynamic Compaction of the Seabed |
| title_fullStr | Numerical Investigation of Water Entry Problem of Pounders with Different Geometric Shapes and Drop Heights for Dynamic Compaction of the Seabed |
| title_full_unstemmed | Numerical Investigation of Water Entry Problem of Pounders with Different Geometric Shapes and Drop Heights for Dynamic Compaction of the Seabed |
| title_short | Numerical Investigation of Water Entry Problem of Pounders with Different Geometric Shapes and Drop Heights for Dynamic Compaction of the Seabed |
| title_sort | numerical investigation of water entry problem of pounders with different geometric shapes and drop heights for dynamic compaction of the seabed |
| url | http://dx.doi.org/10.1155/2018/5980386 |
| work_keys_str_mv | AT mohammadhosseintaghizadehvaldi numericalinvestigationofwaterentryproblemofpounderswithdifferentgeometricshapesanddropheightsfordynamiccompactionoftheseabed AT mohammadrezaatrechian numericalinvestigationofwaterentryproblemofpounderswithdifferentgeometricshapesanddropheightsfordynamiccompactionoftheseabed AT atajafaryshalkoohy numericalinvestigationofwaterentryproblemofpounderswithdifferentgeometricshapesanddropheightsfordynamiccompactionoftheseabed AT elhamchavoshi numericalinvestigationofwaterentryproblemofpounderswithdifferentgeometricshapesanddropheightsfordynamiccompactionoftheseabed |