한국해양공학회지 (Journal of Ocean Engineering and Technology)

  • 제11권1호
  • /
  • Pages.55-64
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  • 1997
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  • 1225-0767(pISSN)
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  • 2287-6715(eISSN)
한국해양공학회 (Korean Society of Ocean Engineers)
권호 표지

3차원 PAR WIG (Powder Augmented Ram Wing in Ground Effect) 의 수치연구

Flow analysis of 3-Dimensional Power-Augmented Ram Wing in Ground Effect

  • 곽승현 (한라공과대학교 조선공학과)
  • 발행 : 1997.02.01
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초록

A wing operating in close proximity to the ground exhibits a reduction in induced drag, which increase the lift/drag ratio. The poert-augmented ram (RAR) phenomenon involves directiing the efflux from forward mounted propulsion ststem under the wings, with the efflux nearly stagnated under the wings. In the present paper, 3 dimentional PAR was numerically studied by solving the Navier-Stokes equations. Pressure distribution and velocity vectors are calculated around the wing surface and the ground. Through the numerical simulation, Cp values and lift/drag ratio are carefully reviewed by changing the height/chord; 0.05, 0.1, 0.3 and 0.8. The shape of model is NACA 0012 with a span/chord ratio of 3.0. According to the numerical results, the relationship between lift/drag and height/chord is fairly reasonable.

키워드

참고문헌

  1. Lockeed California Company Report LA/ME/2148 Preliminary Economic Analysis of Winged Hull Vehicles
  2. Luftfahrtechnik-Raumfahrteknik v.10 The Aerodynamic Ground Effect and Development of the Aerofoil Boat Lippisch,A.M.
  3. Janes Surface Skimmers Janes Publishing Company Limited
  4. David Taylor Naval Ship Research and Development Centre ASED-389 Effect of Turbulent Jet Mixing on the Static Lift Performance of a Power-Augmented- Ram Wing Smithey,W.J.H.;Papadales,B.S.,Jr.;Chaplin,H.R.
  5. Proc. of Autumn Conf. of Soc. of Nav. Arch. Experiment Studies on WIG Effect and Design and Construction of a PARWIG Craft Chung,K.H.;Chun,H.H.(et al.)
  6. Jour., Soc., Naval Arch. of Japan v.174 Simulation on Viscous Flow around Two-Dimensional Power-Augmented Ram Wing in Ground Effect Hirata, N.
  7. Proc. of Autumn Conf. of Soc. of Nav. Arch. Numerical Calculation on Flow Fields around a 2-D WIG Jeong,S.M.;Lee,Y.G.;Lee,S.H.
  8. Proc. of Autumn Conf. of Soc. Nav. Arch. A Basic Study on the Viscous Flow Characteristics around WIG Yoon,B.S.;Kim,Y.K.
  9. Jour. of Soc. of Naval Arch of Japan v.170 Simulation of Hydrodynamic Effects of 2-Dimensional WIG moving near the Free Surface Masuda,K.;Suzuki,K.
  10. Trans. of West-Japan Soc. of Naval Arch v.83 Free Surface Effect on Characteristics of Two-Dimenstional Wing Kataoka,K.;Ando,J.
  11. Aerofoil Sections Riegels, F.W.
  12. Theory of Wing Sections Abbott, I.H.;Von Doenhoff, A.E.
  13. Jour., Soc., Naval Arch. of Japan v.179 Numerical Study on the Aerodynamic Characteristics of a Three Dimensional Power Augmented Ram Wing in Ground Effect Hirata, N.