摘要
采用γ-~Reθt转捩模型,对NACA0012翼型的固定转捩进行数值模拟,计算了不同雷诺数下刚好激发转捩又不引起过大局部压力扰动和附加阻力的最低粗糙带高度,说明了γ-~Reθt模型模拟固定转捩的能力。通过计算低雷诺数下固定转捩来模拟高雷诺数下自然转捩,计算结果表明固定转捩可以较好地模拟自然转捩。这两种计算结果对风洞试验都有重要的指导意义。
Numerically predicted the fixed artificial transition on NACA0012 airfoil with transition model, the optimal roughness height trigger transition without causing excessive pressure disturbance near the roughness and without bringing extra drag was calculated. The numerical results indicated this model was able to simulate the fixed artificial transition. The ability of fixed artificial transition under low Reynolds number in a wind tunnel to simulate free transition under full-scale high Reynolds number in real atmospheric flight was assessed, it turned out that fixed artificial transition can simulate the free transition well. It is expected that the results will serve as guidance for fixed artificial transition experiments.
出处
《航空科学技术》
2015年第2期23-28,共6页
Aeronautical Science & Technology
关键词
γ-~Reθt转捩模型
粗糙带
自然转捩
固定转捩
数值模拟
γ-~Reθt transition model
roughness trip
free transition
fixed artificial transition
numerical simulation
作者简介
通讯作者．成婷婷（1987-）女，硕士，助理工程师。主要研究方向：飞机性能品质试飞。Tel：029-86830577E—mail：136980192@qq．com
蒙泽海（1978-）男，硕士，高级工程师。主要研究方向：飞机性能品质试飞。
郗超（1989-）男，硕士，助理工程师。主要演研究方向：飞机性能品质试飞工作。
