A numerical simulation method for parachute Fluid-Structure Interaction(FSI) problem using Semi-Implicit Method for Pressure-Linked Equations(SIMPLE) algorithm is proposed.This method could be used in both coupling computation of parachute FSI and flow field analysis.Both flat circular parachute and conical parachute are modeled and simulated by this new method.Flow field characteristics at various angles of attack are further simulated for the conical parachute model.Comparison with the space-time FSI technique shows that this method also provides similar and reasonable results.
提出了基于压力耦合的半隐式算法,即SIMPLE(Semi-Implicit Method for Pressure-Linked Equations)算法和生成阶梯网格方法的对稳定下降阶段的降落伞进行数值模拟的新方法.此方法在降落伞流固耦合计算中具有较好的稳定性和较高的效率.对降落伞稳定下降阶段的流固耦合问题进行了数值模拟.降落伞模型分别采用了圆形伞和锥形伞稳定下降时的结构数据,并对锥形伞模型进行了不同来流攻角情形下的模拟.与平行有限元方法相比,采用SIMPLE算法的新方法得到了更准确和更合理的结果.此新方法可以作为传统数值模拟方法的一个可靠替代和重要补充.
