Open AccessSuppression mechanism study of attached apex drogue on undesirable inflation phenomena
Author(s) -
Jun Li,
Han Cheng,
Yang Jing
Publication year - 2018
Publication title -
industria textilă
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.281
H-Index - 14
ISSN - 1222-5347
DOI - 10.35530/it.069.02.1414
Subject(s) - mechanism (biology) , finite element method , coupling (piping) , apex (geometry) , mechanics , domain (mathematical analysis) , polygon mesh , inflation (cosmology) , research object , deformation (meteorology) , computational fluid dynamics , vector field , fluid–structure interaction , computer science , structural engineering , physics , engineering , mechanical engineering , geometry , mathematics , mathematical analysis , theoretical physics , computer graphics (images) , quantum mechanics , regional science , meteorology , geography
At present, the studies of suppression effect of attached apex drogue on undesirable inflation were seriously dependenton experiments. The experiments were difficult to reveal the suppression mechanism due to the difficulty of datacollection. In this paper, a FSI (Fluid Structure Interaction) model based on explicit finite element method was proposedto study the suppression mechanism. The graphical deformation method was used to realize the movement ofcomputational domain. At the same time, the velocity conditions were applied on the boundaries of computationaldomain, which was used to simulate the external wind field. The coupling between the fluid and structure described byLagrangian meshes was realized by contact algorithm. Finally, an extra-large parachute was taken as the researchobject, and the suppression mechanism of attached apex drogue was analyzed according to the numerical results. Theeffect of different attached apex drogues with different resistance characteristics also was analyzed by the above FSImodel. The analysis model and method proposed in this paper could provide the design basis of extra-large parachute.