Journal of Advanced Marine Engineering and Technology
- 제17권1호
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- Pages.33-44
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- 1993
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- 2234-7925(pISSN)
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- 2234-8352(eISSN)
2차원 각주의 공력특성 능동제어에 관한 수치해석 연구
Numerical Study on the Active Control of Aerodynamic Properties of 2 - D Square Prism
초록
Active control of a flow field is essential to design efficient parts or elements relating to fluid machineries. The present study is aimed to suggest a new discretization technique of the convection term by renewing the non-conservative equation found in SOLA-VOF into a conservative one. And, as an application, flow characteristics are investigated by adjusting the backward ejecting velocity of 2-D square prism to control the aerodynamic properties. Strouhal number, drag and lift coefficient are compared in terms of various ejecting velocity. Among the results, the transient weak fluctuation of the lift and drag coefficient when the ejecting velocity equals channel inlet velocity is remarkably noticed.