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Time efficient aeroelastic simulations based on radial basis functions
Liu W; Huang CD; Yang GW(杨国伟); Liu, W (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
AbstractAeroelasticity studies the interaction between aerodynamic forces and structural responses, and is one of the fundamental problems to be considered in the design of modern aircraft. The fluid-structure interpolation (FSI) and mesh deformation are two key issues in the CFD-CSD coupling approach (the partitioned approach), which is the mainstream numerical strategy in aeroelastic simulations. In this paper, a time efficient coupling scheme is developed based on the radial basis function interpolations. During the FSI process, the positive definite system of linear equations is constructed with the introduction of pseudo structural forces. The acting forces on the structural nodes can be calculated more efficiently via the solution of the linear system, avoiding the costly computations of the aerodynamic/structural coupling matrix. The multi-layer sequential mesh motion algorithm (MSM) is proposed to improve the efficiency of the volume mesh deformations, which is adequate for large-scale time dependent applications with frequent mesh updates. Two-dimensional mesh motion cases show that the MSM algorithm can reduce the computing cost significantly compared to the standard RBF-based method. The computations of the AGARD 445.6 wing flutter and the static deflections of the three-dimensional high-aspect-ratio aircraft demonstrate that the developed coupling scheme is applicable to both dynamic and static aeroelastic problems. (C) 2016 Elsevier Inc. All rights reserved.
Indexed BySCI
WOS IDWOS:000394408900042
WOS KeywordAeroelastics ; Fluid-structure interpolation ; Mesh deformation ; Radial basis functions
WOS Research AreaComputer Science ; Physics
WOS SubjectComputer Science, Interdisciplinary Applications ; Physics, Mathematical
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorLiu, W (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Liu W,Huang CD,Yang GW,et al. Time efficient aeroelastic simulations based on radial basis functions[J]. JOURNAL OF COMPUTATIONAL PHYSICS,2017,330:810-827.
APA Liu W,Huang CD,杨国伟,&Liu, W .(2017).Time efficient aeroelastic simulations based on radial basis functions.JOURNAL OF COMPUTATIONAL PHYSICS,330,810-827.
MLA Liu W,et al."Time efficient aeroelastic simulations based on radial basis functions".JOURNAL OF COMPUTATIONAL PHYSICS 330(2017):810-827.
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