Abstract
Active control of rotor–stator interaction noise is studied numerically based on the surface oscillation of stator vanes. The problem is formulated in terms of 3D Euler equations linearized around uniform steady flow. Governing equations are solved with an explicit numerical technique based on a high-order approximation of spacial derivatives. It is found that the acoustic response with actuation on the suction side of the vanes differs considerably from that on the pressure side. The noise radiation also exhibits a strong dependence on the actuation frequency and position on the vane. Noise reduction of up to 80 % can be achieved.
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Acknowledgments
Yu Zhou wishes to acknowledge support given to him from the Natural Science Foundation of China through grants 11172085 and 50930007.
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Vinogradov, I., Zhou, Y. (2014). Stator Vane-Based Active Control of Turbofan Engine Noise. In: Zhou, Y., Liu, Y., Huang, L., Hodges, D. (eds) Fluid-Structure-Sound Interactions and Control. Lecture Notes in Mechanical Engineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40371-2_36
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DOI: https://doi.org/10.1007/978-3-642-40371-2_36
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