Numerical simulation of parafoil inflation process based on fluid-structure interaction methodChinese Full TextEnglish Full Text (MT)
ZHANG Siyu;YU Li;LIU Xin;Key Laboratory of Aircraft Environment Control and Life Support, MIIT, Nanjing University of Aeronautics and Astronautics;College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics;
Abstract: To study the fluid-structure interaction dynamic characteristics of rammed parafoil during inflating process, a folding model of rammed parafoil with multi-chamber was established based on the theory of free form deformation. The time-step updating technique was used to make fluid field move with the movement of the parafoil system. The nonlinear dynamics numerical calculation was carried out with Arbitrary Lagrange-Euler(ALE) method during the unsteady parafoil inflation process. The numerical results are in good agreement with the airdrop test results. The three-dimensional shape and unsteady flow field distribution indicate that there exists a wake recontact phenomenon with "tip warping and central depression" due to the tip vortex during parafoil inflation process. The inflatable law of each chamber is symmetrical with respect to the central chamber. The dynamic variation law of parafoil aerodynamic characteristics is analyzed and the glide ratio is stable at 2.24 after inflation. The conclusions provide a theoretical basis for parafoil design and inflation performance prediction.
Keywords:
fluid-structure interaction; inflation; parafoil; Arbitrary Lagrange-Euler(ALE); wake recontact;
- DOI:
10.13700/j.bh.1001-5965.2019.0408
- Series:
(C) Architecture/ Energy/ Traffic/ Electromechanics, etc
- Subject:
Aeronautics and Astronautics Science and Engineering
- Classification Code:
V244.21
- Mobile Reading
Read on your phone instantly
Step 1Scan QR Codes
"Mobile CNKI-CNKI Express" App
Step 2Open“CNKI Express”
and click the scan icon in the upper left corner of the homepage.
Step 3Scan QR Codes
Read this article on your phone.
- HTML
- BETABETAEnglish HTML (MT)
- CAJ Download
- PDF Download
Download the mobile appuse the app to scan this coderead the article.
Tips: Please download CAJViewer to view CAJ format full text.
Download: 664 Page: 1108-1115 Pagecount: 8 Size: 3736K
Citation Network
Related Literature
- Similar Article
- Reader Recommendation
- Associated Author