한국전산유체공학회지 (Journal of computational fluids engineering)

한국전산유체공학회 (Korean Society of Computational Fluids Engineering)
권호 표지
DOI QR코드

DOI QR Code

잠열 전달이 일어나는 얇은 익형주위의 천음속 습공기 유동에서의 마하수와 익형 두께비의 영향

THE EFFECTS OF MACH NUMBER AND THICKNESS RATIO OF AIRFOIL ON TRANSONIC FLOW OF MOIST AIR AROUND A THIN AIRFOIL WITH LATENT HEAT TRANSFER

  • Lee, J.C. (Dept. of Mechanical Engineering, Andong Nat'l Univ.)
  • 투고 : 2012.08.30
  • 심사 : 2012.10.31
  • 발행 : 2012.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Once the condensation of water vapor in moist air around a thin airfoil occurs, liquid droplets nucleate. The condensation process releases heat to the surrounding gaseous components of moist air and significantly affects their thermodynamic and flow properties. As a results, variations in the aerodynamic performance of airfoils can be found. In the present work, the effects of upstream Mach number and thickness ratio of airfoil on the transonic flow of moist air around a thin airfoil are investigated by numerical analysis. The results shows that a significant condensation occurs as the upstream Mach number is increased at the fixed thickness ratio of airfoil($\epsilon$=0.12) and as the thickness ratio of airfoil is increased at the fixed upstream Mach number($M_{\infty}$=0.80). The condensate mass fraction is also increased and dispersed widely around an airfoil as the upstream Mach number and thickness ratio of airfoil are increased. The position of shock wave for moist air flow move toward the leading edge of airfoil when it is compared with the position of shock wave for dry air.

키워드

참고문헌

  1. 1958, Wegener, P.P., and Mack, L.M., "Condensation in supersonic and hypersonic wind tunnels," Advances in Applied Mechanics, Vol.5, pp.307-447. https://doi.org/10.1016/S0065-2156(08)70022-X
  2. 1975, Wegener, P.P., "Nonequilibrium flow with condensation," Acta Mechanica, Vol.21, pp.65-91. https://doi.org/10.1007/BF01172829
  3. 1979, Hall, R.M., "Onset of condensation effects with an NACA 0012-64 airfoil tested in the Langley 0.3-meter transonic cryogenic wind tunnel technology," NASA TP 1385.
  4. 1990, Schnerr, G.H. and Dohrmann, U., "Transonic flow around airfoils with relaxation and energy supply by homogeneous condensation," AIAA Journal, Vol.28, pp.1187-1193. https://doi.org/10.2514/3.25190
  5. 1994, Schnerr, G.H. and Dohrmann, U., "Drag and lift nonadiabatic Transonic flow," AIAA Journal, Vol.32, pp.101-107. https://doi.org/10.2514/3.11956
  6. 1964, Wegener, P.P. and Pouring, A.A., "Experiments on condensation of water vapor by homogeneous nucleation in nozzles," Physics of Fluids, Vol.7, pp.352-361. https://doi.org/10.1063/1.1711206
  7. 1966, Hill, P.G., "Condensation of water vapor during supersonic expansion in nozzles," Journal of Fluid Mechanics, Vol.25, pp.593-620. https://doi.org/10.1017/S0022112066000284
  8. 1989, Peters, F. and Paikert, B., "Nucleation and growth rates of homogeneously condensing water vapor in argon from shock tube experiments," Experiments in Fluids, Vol.7, pp.521-530. https://doi.org/10.1007/BF00187403
  9. 1969, Zierep, J., "Schallnahe stromungen mit wamezufuhr," Acta Mechanica, Vol.8, pp.126-132. https://doi.org/10.1007/BF01178539
  10. 1993, Schnerr, G.H., and Mundinger, G., "Similarity drag and lift in transonic flow with given internal heat addition," European Journal of Mechanics, B/Fluids, Vol.12,5, pp.597-612.
  11. 1939, Volmer, M., "Kinetik der Phasenbildung," Steinopff-Verlag, Leipzig.
  12. 2000, Rusak, Z. and Lee, J.C., "Transonic flow of moist air around a thin airfoil with nonequilibrium and homogeneous condensation," Journal of Fluid Mechanics, Vol.403, pp.173-199. https://doi.org/10.1017/S0022112099007053
  13. 1971, Murman, E.M. and Cole, J.D., "Calculation of plane study transonic flows," AIAA Journal, Vol.9, pp.114-121. https://doi.org/10.2514/3.6131