| Citation: | LI Longhao, XIE Wenzhong, ZHANG Xifeng, et al. Restart control in two-dimensional twin-duct supersonic inlet through rotating cowl[J]. Journal of Aerospace Power, 2026, 41（8）：20250307 doi: 10.13224/j.cnki.jasp.20250307
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An investigation into restart control strategies for a two-dimensional twin-duct supersonic inlet under asymmetric incoming flow conditions was conducted. The cowl was rotated on the windward and leeward sides to evaluate the efficacy in mitigating unstart. Unsteady numerical simulations were employed to capture the inlet’s unstart flow field under plug throttling-induced backpressure loading. The restart processes initiated by rotating the leeward-side and windward-side cowls were comparatively analyzed. The findings revealed that progressive plug throttling induced asymmetric inlet operation, characterized by a deep unstart condition in the leeward inlet, while the windward inlet maintained a started state. Following plug-throttling-induced unstart, leeward cowl rotation failed to achieve leeward inlet restart. This failure was attributed fundamentally to excessive flow blockage resulting from the predominance of windward outlet flow. In contrast, windward cowl rotation reduced its captured mass flow, effectively mitigating the blockage effects imposed on the leeward side and thereby facilitating successful restart of the leeward inlet.
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