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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국항공우주학회 International Journal of Aeronautical and Space Sciences International Journal of Aeronautical and Space Sciences Volume.16 Number.4
- 발행연도
- 2015.12
- 수록면
- 571 - 580 (10page)
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초록· 키워드
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In this paper, a computational study was conducted in order to investigate the rotor blade sweep effect on the aerodynamics of a small axial supersonic impulse turbine stage. For this purpose, three-dimensional unsteady RANS simulations have been performed with three different rotor blade sweep angles (-15°, 0°, +15°) and the results were compared with each other. Both NTG (No tip gap) and WTG (With tip gap) models were applied to examine the effect on tip leakage flow. As a result of the simulation, the positive sweep model (+15°) showed better performance in relative flow angle, Mach number distribution, entropy rise, and tip leakage mass flow rate compared with no sweep model. With the blade static pressure distribution result, the positive sweep model showed that hub and tip loading was increased and midspan loading was reduced compared with no sweep model while the negative sweep model (-15°) showed the opposite result. The positive sweep model also showed a good aerodynamic performance around the hub region compared with other models. Overall, the positive sweep angle enhanced the turbine efficiency.
목차
Abstract
1. Introduction
2. Numerical Method
3. Results
4. Conclusion
References
참고문헌 (13)
참고문헌 신청
[학술지(정기간행물)] - Lewis, R. / 1971 / The Influence of Sweep and Dihedral in Turbomachinery Blade Rows / Journal of mechanical Engineering Science 13 (4) : 266 ~ 285
[학술지(정기간행물)] - Hill, J. / 1974 / Experimental Investigations of Strongly Swept Turbine Cascades with Low Speed Flow / Journal of mechanical Engineering Science 16 (1) : 32 ~ 40
[학술대회논문] - Denton, J. / 1999 / The Exploitation of Threedimensional Flow in Turbomachinery Design / Proceedings of the Institution of Mechanical Engineers, Part C, Journal of Mechanical Engineering Science 213 (2) : 125 ~ 137
[학술지(정기간행물)] - Wadia, A. / 1998 / Inner Workings of Aerodynamic Sweep / ASME Journal of Turbomachinery 120 : 671 ~ 682
[학술지(정기간행물)] - Gümmer, V. / 2001 / Using Sweep and Dihedral to Control Three-Dimensional Flow in Transonic Stators of Axial Compressors / ASME Journal of Turbomachinery 123 : 40 ~ 48
[학술지(정기간행물)] - Hill, J. / 1974 / Experimental Investigations of Strongly Swept Turbine Cascades with Low Speed Flow / Journal of mechanical Engineering Science 16 (1) : 32 ~ 40
[학술대회논문] - Denton, J. / 1999 / The Exploitation of Threedimensional Flow in Turbomachinery Design / Proceedings of the Institution of Mechanical Engineers, Part C, Journal of Mechanical Engineering Science 213 (2) : 125 ~ 137
[학술지(정기간행물)] - Wadia, A. / 1998 / Inner Workings of Aerodynamic Sweep / ASME Journal of Turbomachinery 120 : 671 ~ 682
[학술지(정기간행물)] - Gümmer, V. / 2001 / Using Sweep and Dihedral to Control Three-Dimensional Flow in Transonic Stators of Axial Compressors / ASME Journal of Turbomachinery 123 : 40 ~ 48
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UCI(KEPA) : I410-ECN-0101-2016-558-002289994