Rapid Simulation of 3D Liquid Sloshing in the Lunar Soft-Landing Spacecraft

Yu, Qiang; Li, Zirui

doi:10.2514/1.j058160

Cited by 10 publications

(2 citation statements)

References 19 publications

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“…With regard to fluid-structure coupled dynamics, a common approach is to model liquid sloshing by using computational fluid dynamics, i.e., using numerical methods such as the ALE method and SPH method, when dealing with a sloshing fluid in a container with an arbitrary shape [29][30][31]. However, these methods do not always produce reliable results, especially when the sloshing motion is complex [32].…”

Section: Introductionmentioning

confidence: 99%

A Two-Dimensional Liquid Sloshing Analysis in a Partially Filled Complicated-Shape Tank by the Schwarz–Christoffel Transformation

Lü,

Zhu,

2024

Acoustics

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The nonlinear sloshing of an incompressible fluid with irrotational flow in a complicated-shape tank due to horizontal excitation is studied with a semi-analytical method proposed in this study. In this method, the velocity potential function of a liquid in a complicated-shape tank is estimated by using an approximate analytical transformation function from a complicated-shape region to a rectangular region. This function is obtained through Schwarz–Christoffel mapping and polynomial fitting. Nonlinear dynamic equations for the fluid–structure coupled system are developed based on the Hamilton–Ostrogradskiy principle. Nonlinear kinematic equations for the fluid–structure coupled system are derived based on the relationship between the liquid velocity and the free-surface equation. The Galerkin method is used to convert partial differential equations into ordinary differential equations. When tank movement is given, nonlinear models for the coupled system can be reduced to simple ones for liquid sloshing. Natural frequencies for the coupled system and liquid sloshing are analyzed, and the semi-analytical results agree with the numerical ones calculated with the software DampSlosh. Hydrodynamic forces and moments are also analyzed, and the semi-analytical results agree well with the numerical ones calculated with the Flow3D v10.1.1.

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Section: Introductionmentioning

confidence: 99%

A Two-Dimensional Liquid Sloshing Analysis in a Partially Filled Complicated-Shape Tank by the Schwarz–Christoffel Transformation

Lü,

Zhu,

2024

Acoustics

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show abstract

“…Even though low-gravity liquid sloshing and its interactions with spacecraft dynamics continue to be very active fields of research [20][21][22][23][24][25][26] and a number of publications have explored the magnetic positioning of liquid oxygen and low-susceptibility ferrofluids in microgravity [27][28][29][30][31][32][33][34][35], the study of highly susceptible ferrofluids for space applications * Graduate Research Assistant, Department of Aerospace Engineering Sciences, University of Colorado Boulder, alvaro.romerocalvo@ colorado.edu, AIAA Student Member.…”

Section: Introductionmentioning

confidence: 99%