• The S-ALE method is introduced to simulate the parachute inflation process in large-scale fluid domian scenarios. • Compared with the common ALE method, the computational efficiency of the proposed method is improved by about 22.5%. • The comprehensive influence of aircraft wake on the parachute inflation process is investigated. • The impact of aircraft wake on key features of parachutes during inflation process is analyzed and summarized. In airborne and airdrop missions, the inflation performance of parachutes is significantly influenced by aircraft wakes. To improve the computational efficiency of numerical research, the structured arbitrary Lagrange-Euler (S-ALE) method is introduced in this paper to simulate the parachute inflation process in airborne and airdrop missions. On this basis, the comprehensive influence of aircraft wakes on the parachute inflation process is thoroughly investigated and analyzed in this paper. The results indicate that the S-ALE method is highly consistent with the arbitrary Lagrange-Euler (ALE) method in predicting the variations in key characteristics throughout the parachute inflation process. The relative error of the maximum opening load between the two methods is within 5%. The computational efficiency of the S-ALE method is approximately 22.5% higher than that of the ALE method. Furthermore, under the influence of the aircraft wake, the parachute inflation time is approximately 44% of that without the aircraft wake, and the maximum drag coefficient is approximately 128% of that without the aircraft wake. This study elucidates the influence of transport aircraft wakes on the parachute inflation process and provides a reference for modeling parachute fluid-structure interaction problems in large-scale scenarios.
Li et al. (Sun,) studied this question.
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