Numerical and Experimental Study of a Spherical Projectile Water Entry Problem and Investigation of Mass and Impact Velocity Effect on Pinchoff Time and Depth

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Taghizadeh Valdi Mohammad Hossein; Atrchian Mohammad Reza; Jafary Shalkoohy Ata; CHAVOSHI ELHAM

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Journal: JOURNAL OF MARINE ENGINEERING Year:2018 | Volume:14 | Issue:27 Page(s): 35-48

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Title

Numerical and Experimental Study of a Spherical Projectile Water Entry Problem and Investigation of Mass and Impact Velocity Effect on Pinchoff Time and Depth

Author(s)

Taghizadeh Valdi Mohammad Hossein | Atrchian Mohammad Reza | Jafary Shalkoohy Ata | CHAVOSHI ELHAM | Issue Writer Certificate

Keywords

Water EntryQ1

Spherical ProjectileQ1

MassQ1

Impact VelocityQ1

Abstract

The Water Entry problem of Spherical Projectile is simulated numerically and experimentally in this study. An explicit dynamic analysis method is employed to model the fluid-structure interaction using a Coupled Eulerian-Lagrangian (CEL) formulation that is available in finite element code Abaqus. The comparison of the numerical simulation results including displacement and velocity variations of Spherical Projectile in water depth as a function of time, with the theoretical results, indicates a good match between these results and the precision and applicability of the numerical algorithm used. The results reveal that pinch-off time is a very weak function of projectile Mass and Impact Velocity on free water surface; while the pinchoff depth significantly increases along with increased this parameters. Additionally, the projectile Mass has a subtle effect on viscous dissipation energy, while increasing the Impact Velocity on free water surface leads to decrese in dissipation energy.

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APA: Copy

Taghizadeh Valdi, Mohammad Hossein, Atrchian, Mohammad Reza, Jafary Shalkoohy, Ata, & CHAVOSHI, ELHAM. (2018). Numerical and Experimental Study of a Spherical Projectile Water Entry Problem and Investigation of Mass and Impact Velocity Effect on Pinchoff Time and Depth. JOURNAL OF MARINE ENGINEERING, 14(27 ), 35-48. SID. https://sid.ir/paper/60915/en

Vancouver: Copy

Taghizadeh Valdi Mohammad Hossein, Atrchian Mohammad Reza, Jafary Shalkoohy Ata, CHAVOSHI ELHAM. Numerical and Experimental Study of a Spherical Projectile Water Entry Problem and Investigation of Mass and Impact Velocity Effect on Pinchoff Time and Depth. JOURNAL OF MARINE ENGINEERING[Internet]. 2018;14(27 ):35-48. Available from: https://sid.ir/paper/60915/en

IEEE: Copy

Mohammad Hossein Taghizadeh Valdi, Mohammad Reza Atrchian, Ata Jafary Shalkoohy, and ELHAM CHAVOSHI, “Numerical and Experimental Study of a Spherical Projectile Water Entry Problem and Investigation of Mass and Impact Velocity Effect on Pinchoff Time and Depth,” JOURNAL OF MARINE ENGINEERING, vol. 14, no. 27 , pp. 35–48, 2018, [Online]. Available: https://sid.ir/paper/60915/en

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