Effects of simplified horn ice shapes on flow structures around an airfoil
Ice can change the leading-edge profile of the airfoil and affect the overall aerodynamic performance of the airfoil.Studying the effects of simplified horn ice shapes on the flow field structures can provide a valuable reference for aircraft anti-icing/deicing design.Detailed experimental measurements of the flow field structures of the airfoil with different horn ice shapes were carried out in a low-speed direct wind tunnel using the particle image velocimetry technique.Three simplified ice shapes and the original ice shape were tested at different angles of attack.The results showed that,within the scope of the present study,there was a maximum 35.11％difference in the flow field parameters between the airfoil with simplified ice shapes and the airfoil with the original ice shape.Compared with the original ice shape case,the separation bubbles of the simplified ice shape cases were farther away from the leading edge and trailing edge of the airfoil.Among the three ice shape simplification methods,adding connecting lines between rectangular ice tips was found to have the optimum simplification effects in the flow structures and the airfoil performances.Using this simplification method,the maximum flow field differences at various angles of attack were within 14.88％in the selected two regions.
SimplifyHorn ice shapeFlow structureAirfoil
郑诚毅、金哲岩、杜旭之、东乔天、杨志刚
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School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China
Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems,Shanghai 201804,China
Department of Mechanical Science and Engineering,University of Illinois,Urbana 61801,USA
COMAC Shanghai Aircraft Design & Research Institute,Shanghai 201203,China
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Simplify Horn ice shape Flow structure Airfoil
National Natural Science Foundation of ChinaNational Engineering Research Center of New Energy Vehicles and Power SystemsShenyang Key Laboratory of Aircraft Icing and Ice Protection
NETL
NSTL
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