Large Eddy Simulation of the Vortex-Induced Vibration of a Circular Cylinder by Using the Local Domain-Free Discretization Method

Pu, Tianmei; Zhang, Yang; Zhou, Chunhua

doi:10.4208/aamm.oa-2021-0199

Cited by 1 publication

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“…Note that the Reynolds number for a real parachute is typically around 10 5 to 10 6 [11], whereas the Reynolds number in this study is reduced to 10 3 and the turbulence effect is not considered. Future work will focus on extending the present FSI approach to turbulent flow regimes by the large eddy simulation and wall modeling technique [48,49].…”

Section: Discussionmentioning

confidence: 99%

Extension of a sharp-interface immersed-boundary method for simulating parachute inflation

Zhang,

Pu,

Jia

et al. 2024

Adv. Aerodyn.

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In this work, the sharp-interface immersed boundary (IB) method proposed by Mittal et al. (J Comput Phys 227(10):4825–4852, 2008) is extended to fluid-structure-interaction (FSI) simulation of parachute inflation by utilizing several open-source tools. The method employs a Cartesian-grid ghost-cell methodology to accurately represent the immersed boundary, and it is suitable for solving moving-boundary flows with arbitrarily complex geometries. The finite-element code CalculiX is employed to solve the structural dynamics of the parachute system. The IB flow solver is coupled with CalculiX in a minimally-invasive manner using the multi-physics coupling library preCICE. The implicit fluid-structure coupling together with the Aitken adaptive under-relaxation scheme is considered to improve the numerical accuracy and stability. The developed approach is validated by a benchmark FSI case. Numerical experiments on the inflation process of several typical parachutes are further conducted. The breathing process, flow structure, canopy displacement and drag coefficient are analyzed to demonstrate the applicability of the present approach for simulating parachute inflation.

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Section: Discussionmentioning

confidence: 99%