大气飞行条件凝结放热对机翼升阻特性影响  

The effects of heat release on the lift and drag of the wing in atmospheric flight

作　　者：孙秀玲[1] 张天军[1] 马晓永[2] 

机构地区：[1]西安科技大学,西安710054 [2]中国空气动力研究与发展中心,绵阳621000

出　　处：《应用力学学报》2017年第3期514-520,共7页Chinese Journal of Applied Mechanics

摘　　要：跨音速流动下,大气中水蒸气发生的非平衡凝结对机翼的升阻特性影响显著。本文对大气飞行条件下,绕ONERA M6机翼非平衡凝结流动进行研究。对攻角分别为1.07°、3.06°、6.06°非平衡凝结流动影响机翼周围流场分布进行分析。分析结果表明:与干空气流动相比,攻角为1.07°时,随着相对湿度从30%增加到60%,机翼的升阻比持续减小,相对湿度继续增加到70%,机翼升阻比略有增大,为干空气的21.6%;攻角为3.06°时,随着相对湿度从30%增加到70%,机翼的升阻比持续减小,相对湿度70%时,升阻比为干空气的41.5%;攻角为6.06°时,随着相对湿度从30%增加到70%,机翼的升阻比持续减小,相对湿度70%时,升阻比为干空气的64.3%。In transonic flow,the lift/drag ratio of wing is obviously influenced by non-equilibrium condensation of water vapour.Numerical simulations are implemented to investigate the lift/drag of the ONERA M6 wing in atmospheric flight at 1.07°,3.06°and 6.06°angle of attack respectively.Compared with the dry air flow,at1.07°angle of attack,the lift/drag ratio decreases with increase of the relative humidity from 30%to 60%obviously and a decrease of 21.6%is observed up to 70%relative humidity.At 3.06°and 6.06°angles of attack,the lift/drag ratios decrease with increase of the relative humidity from 30%to 70%,maximum decreases of41.5%and 64.3%are observed respectively.The mechanics leading to the change is analyzed.With the condensation of water vapor in moist air,latent heat is released and added to the surrounding air.As a result the velocity,the pressure and the flow field structure of the moist air are significantly changed.

关 键 词：非平衡凝结 ONERA M6机翼 升阻比 

分 类 号：O354.6[理学—流体力学] V211.41[理学—力学]