密封盖翻转过程中的气动特性数值研究

NUMERICAL STUDY OF SEALING COVER TURNOVER AERODYNAMIC CHARACTERISTICS

为了研究密封盖的气动性能,采用计算流体力学方法结合k-ε二方程湍流模型,建立密封盖翻转过程数值模型,在与实验数据对比验证的基础上,研究了密封盖翻转过程中气动特性随迎角变化规律。结果表明:密封盖的气动特性符合正弦规律变化趋势;密封盖的升力系数、阻力系数和力矩系数与来流方向密切相关。研究结果为密封盖运动轨迹预测提供基础。

To study the sealing cover turnover aerodynamic characteristics, computational fluid dynamic method and k-ε two-equation turbulent model were adopted to establish sealing cover turnover model. Compared with experimental results, the sealing cover aerodynamic characteristics changing with the attack angle were studied. Results showed that sealing cover aerodynamic characteristics are in accord with the trend of sine curve and the lift coefficient, drag coefficient and moment coefficient changes of sealing cover are closed related to flow direction. Results can provide reference for predicting sealing cover trajectory.