Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Iafrati Alessandro"'
The water entry at high horizontal speed of double-curvature specimens, reproducing the rear part of the fuselage that first gets in contact with the water during aircraft ditching, is investigated experimentally. Three shapes are analysed, represent
Externí odkaz:
http://arxiv.org/abs/2408.06952
Autor:
Lu, Yujin, Del Buono, Alessandro, Xiao, Tianhang, Iafrati, Alessandro, Xu, Jinfa, Deng, Shuanghou, Chen, Jichang
Publikováno v:
Ocean Engineering, Volume 271, March 2023
The present study is concerned with the peak acceleration azmax occurring during the water impact of a symmetric wedge. This aspect can be important for design considerations of safe marine vehicles. The water-entry problem is firstly studied numeric
Externí odkaz:
http://arxiv.org/abs/2211.12290
Publikováno v:
Aerospace Science and Technology, Volume 130, November 2022
In this paper the hydrodynamics of fuselage models representing the main body of three different types of aircraft, moving in water at constant speed and fixed attitude is investigated using the Unsteady Reynolds-Averaged Navier-Stokes (URANS) level-
Externí odkaz:
http://arxiv.org/abs/2208.01504
Autor:
Lu, Yujin, Del Buono, Alessandro, Xiao, Tianhang, Iafrati, Alessandro, Deng, Shuanghou, Xu, Jinfa
Publikováno v:
Ocean Engineering, Volume 262, October 2022
The water landing of an amphibious aircraft is a complicated problem that can lead to uncomfortable riding situation and structural damage due to large vertical accelerations and the consequent dynamic responses. The problem herein is investigated by
Externí odkaz:
http://arxiv.org/abs/2207.10413
There is an increasing need to develop a two-dimensional (2D) water entry model including the slamming and transition stages for the 2.5-dimensional (2.5D) method being used on the take-off and water landing of seaplanes, and for the strip theory or
Externí odkaz:
http://arxiv.org/abs/2201.00959
Autor:
Spinosa, Emanuele, Iafrati, Alessandro
Publikováno v:
Mechanical Systems and Signal Processing, Volume 168, 1 April 2022
In this paper a denoising strategy based on the EEMD (Ensemble Empirical Mode Decomposition) is used to reduce the background noise in non-stationary signals, which represent the forces measured in scaled model testing of the emergency water landing
Externí odkaz:
http://arxiv.org/abs/2109.14310
Autor:
Spinosa, Emanuele, Iafrati, Alessandro
Publikováno v:
International Journal of Impact Engineering, Volume 147, January 2021
The water impact of an inclined flat plate and at high horizontal velocity is experimentally investigated with focus on the fluid-structure interaction aspects. Several test conditions have been examined by varying the vertical to horizontal velocity
Externí odkaz:
http://arxiv.org/abs/2105.06180
Publikováno v:
Journal of Fluid and Structures, Volume 103, May 2021
The present paper is dedicated to the development of a numerical model for the water impact of two-dimensional (2D) and axisymmetric bodies with imposed motion. The work is a first step towards the implementation of a 2D+t procedure to be used for th
Externí odkaz:
http://arxiv.org/abs/2103.15132
Publikováno v:
In Journal of Computational Physics 15 February 2024 499
We revisit simple algebraic VOF methods for advection of material interfaces based of the well established TVD paradigm. We show that greatly improved representation of contact discontinuities is obtained through use of a novel CFL-dependent limiter
Externí odkaz:
http://arxiv.org/abs/1903.11949