Numerical study on the flow characteristics of micro air vehicle wings at low Reynolds numbers
The aerodynamic characteristics around a micro air vehicle wing with an inverse-Zimmerman configuration are numerically investigated by an in-house programmed solver particularly dedicated for aircrafts operating in low Reynolds number regime. The complex three-dimensional aerodynamic performance wa...
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| Veröffentlicht in: | International journal of micro air vehicles 2016-03, Vol.8 (1), p.29-40 |
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| container_title | International journal of micro air vehicles |
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| creator | Xiao, Tianhang Li, Zhengzhou Deng, Shuanghou Ang, Haisong Zhou, Xinchun |
| description | The aerodynamic characteristics around a micro air vehicle wing with an inverse-Zimmerman configuration are numerically investigated by an in-house programmed solver particularly dedicated for aircrafts operating in low Reynolds number regime. The complex three-dimensional aerodynamic performance was investigated in terms of force generation and flow structures visualization. Results show that the flow around the low aspect ratio MAV wing is characterized by complex three-dimensional separation-dominated flow. The flow fields exhibit separation, reattachment, secondary separation, secondary reattachment, and strong interaction between the separated boundary layer and wingtip vortices. In addition, the effect of tip-attached vertical stabilizers on flow structure and aerodynamic forces is addressed in this paper. The stabilizers significantly influence both the flow structure and aerodynamic forces via reducing the strength of wingtip vortices and shedding and interacting of wingtip vortices. Eventually, the unsteadiness of the aerodynamics revealed that higher angle of attack will result in stronger unsteady phenomena as demonstrated by the oscillating forces. |
| doi_str_mv | 10.1177/1756829316638204 |
| format | Article |
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The complex three-dimensional aerodynamic performance was investigated in terms of force generation and flow structures visualization. Results show that the flow around the low aspect ratio MAV wing is characterized by complex three-dimensional separation-dominated flow. The flow fields exhibit separation, reattachment, secondary separation, secondary reattachment, and strong interaction between the separated boundary layer and wingtip vortices. In addition, the effect of tip-attached vertical stabilizers on flow structure and aerodynamic forces is addressed in this paper. The stabilizers significantly influence both the flow structure and aerodynamic forces via reducing the strength of wingtip vortices and shedding and interacting of wingtip vortices. 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Eventually, the unsteadiness of the aerodynamics revealed that higher angle of attack will result in stronger unsteady phenomena as demonstrated by the oscillating forces.</description><subject>Aerodynamic characteristics</subject><subject>Aerodynamic forces</subject><subject>Aerodynamics</subject><subject>Angle of attack</subject><subject>Boundary layers</subject><subject>Computational fluid dynamics</subject><subject>Flow characteristics</subject><subject>Fluid flow</subject><subject>Low aspect ratio</subject><subject>Low aspect ratio wings</subject><subject>Micro air vehicles (MAV)</subject><subject>Reynolds number</subject><subject>Separation</subject><subject>Stabilizers (fluid dynamics)</subject><subject>Strong interactions (field theory)</subject><subject>Three dimensional flow</subject><subject>Vortices</subject><subject>Wing tip vortices</subject><issn>1756-8293</issn><issn>1756-8307</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>AFRWT</sourceid><sourceid>BENPR</sourceid><recordid>eNp1kM1LAzEQxYMoWGrvHgOeVzOb3U1ylOIXFAXRq0s2H-2W3U1Nspb-902pIgieZpj3fjPMQ-gSyDUAYzfAyorngkJVUZ6T4gRNDqOMU8JOf_qkn6NZCGtCCHDCaAUT9PE89sa3SnY4xFHvsBtwXBlsO7fFaiW9VDHpIbYqYGdx3yrvsGw9_jKrVnUGb9thGbCM-EC8mt3gOh3wMPaN8eECnVnZBTP7rlP0fn_3Nn_MFi8PT_PbRaZoCTHTIi_KpimUpro0khmw2goglBeCW5UzCUoYKYEIoMJyDpSKshE500VVFoZO0dVx78a7z9GEWK_d6Id0ss5pkdOE0Sq5yNGVfgjBG1tvfNtLv6uB1Icg679BJiQ7IkEuze_Sf_17KMtyaQ</recordid><startdate>20160301</startdate><enddate>20160301</enddate><creator>Xiao, Tianhang</creator><creator>Li, Zhengzhou</creator><creator>Deng, Shuanghou</creator><creator>Ang, Haisong</creator><creator>Zhou, Xinchun</creator><general>SAGE Publications</general><general>Sage Publications Ltd</general><scope>AFRWT</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>H8D</scope><scope>L7M</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20160301</creationdate><title>Numerical study on the flow characteristics of micro air vehicle wings at low Reynolds numbers</title><author>Xiao, Tianhang ; 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The complex three-dimensional aerodynamic performance was investigated in terms of force generation and flow structures visualization. Results show that the flow around the low aspect ratio MAV wing is characterized by complex three-dimensional separation-dominated flow. The flow fields exhibit separation, reattachment, secondary separation, secondary reattachment, and strong interaction between the separated boundary layer and wingtip vortices. In addition, the effect of tip-attached vertical stabilizers on flow structure and aerodynamic forces is addressed in this paper. The stabilizers significantly influence both the flow structure and aerodynamic forces via reducing the strength of wingtip vortices and shedding and interacting of wingtip vortices. Eventually, the unsteadiness of the aerodynamics revealed that higher angle of attack will result in stronger unsteady phenomena as demonstrated by the oscillating forces.</abstract><cop>London, England</cop><pub>SAGE Publications</pub><doi>10.1177/1756829316638204</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Aerodynamic characteristics Aerodynamic forces Aerodynamics Angle of attack Boundary layers Computational fluid dynamics Flow characteristics Fluid flow Low aspect ratio Low aspect ratio wings Micro air vehicles (MAV) Reynolds number Separation Stabilizers (fluid dynamics) Strong interactions (field theory) Three dimensional flow Vortices Wing tip vortices |
| title | Numerical study on the flow characteristics of micro air vehicle wings at low Reynolds numbers |
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