On the three-dimensional effects of the water entry of wedges

Wen, Xueliang; Ong, Muk Chen; Yin, Guang

doi:10.1016/j.apor.2023.103649

Cited by 7 publications

(1 citation statement)

References 29 publications

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“…The basic idea is to track the fluid flow in each cell grid by constructing a function and determining the shape of the free surface according to the function value and derivative value of this function. The model takes velocity and pressure as the basic variables and solves the Navier-Stokes equations directly and differentially under the fixed grid of Euler to deal with the complex free-surface changes as well as wave breaking [23]. The following equation is satisfied:…”

Section: Multiphase Flow Modelingmentioning

confidence: 99%

Research of Slamming Load Characteristics during Trans-Media Aircraft Entry into Water

Liu,

Tan,

Zhang

et al. 2024

Drones

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The trans-media aircraft water entry process generates strong slamming loads that will seriously affect the stability and safety of the aircraft. To address this problem, we design a fixed-wing aircraft configuration and employ numerical simulations with the volume of fluid (VOF) multiphase flow model, standard k-epsilon turbulence model, and dynamic mesh technique. We explore the characteristics of aircraft subjected to bang loads under different conditions. The results show the following: the pressure load on the aircraft surface increases with higher water entry velocity; larger entry angles lead to more drastic changes in the aircraft’s drag coefficient, demonstrating strong nonlinear characteristics; the greater the angle of attack into the water, the greater the pressure load on the root underneath the wing, with little effect on the pressure load on the head; and the water entry drag coefficient and average pressure load follow an increasing order of conical head, hemispherical head, and flat head. These findings provide theoretical references for studying the load characteristics during trans-media water entry of various flying bodies and optimizing fuselage structural strength.

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Section: Multiphase Flow Modelingmentioning

confidence: 99%