Study on the aerodynamic performance of nacelle inlet under crosswind

Abstract Flow separation will occur in the nacelle inlet under crosswind operation, which result engine intake distortion and even surge. To study reference characteristics of flow field short tank influence crosswind, this paper observed cloud map total price loss coefficient by changing deflection Angle velocity, made a qualitative analysis pressure degree, then calculated average index, conducted quantitative to explore improvement different factors. The results show that degree is improved with increase incoming velocity at small Angle, but ability improve gradually weakens until it disappears. plays decisive role effect on distortion.