Browse > Article

Effect of Flow Angles at Nozzle and Solidities on a Partial Admitted Small Axial-Type Turbine  

Cho, Chong-Hyun (경상대학교 항공우주공학과 대학원)
Ahn, Kook-Young (한국기계연구원, 환경기계연구부)
Cho, Soo-Yong (경상대학교 항공기부품기술연구센터)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.12, no.6, 2008 , pp. 21-29 More about this Journal
Abstract
Performance characteristics on a partially admitted small axial-type turbine are experimentally studied with changing design parameters, such as exit flow angles at the nozzle and solidities at the rotor. The tested turbine consists of a single-stage and its mean radius is 35 mm. In this experiment, three different solidities and four different nozzle flow angles are applied to find the optimal design parameter. For a comparison of the turbine performance, the net specific output powers are evaluated. For a 3.4% partial admission rate, the best performance is obtained when the rotor solidity is at 2.18, which is increased to 74% compared to the solidity at full admission.
Keywords
Partial Admission; Small Axial-Type Turbine; Flow Angles at Nozzle; Solidity; Performance Test;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Boulbin, F., Hetet, J. F. and Chesse, P., "Nonsteady Flow in the Partial Admission," VDI Berichte NR, 1109, 1994, pp.395-401
2 Bohn, D., Gier, J. and Ziemann, M., "Influence of the Cross-Over Channel Geometry on the Flow Equalization in Partial-Admission Turbines," VGB Power Tech, Vol.2, 1998, pp.49-54
3 Isomura, K., Tanaka, S., Kanebako, H., Murayama, M., Saji, N., Sato, F. and Esashi, M., "Development of Micromachine Gas Turbine for Portable Power Generation," JSME int. J., Series B, Vol.47, No.3, 2004, pp.459-464   DOI   ScienceOn
4 Kang, S. Johnston, J. P., Arima, T., Matsuaga, M., Tsuru, H. and Printz, F. B., "Microscale Radial-Flow Compressor Impeller Made of Silicon Nitride: Manufacturing and Performance," J. of Engineering. for Gas Turbine and Power, Vol.125, 2004, pp.358-365
5 조종현, 조수용, 김수용, 최상규, "부분분사에 의하여 작동하는 축류형터빈의 성능예측에 관한연구," 한국추진공학회, Vol.9, No.3, 2005, pp.10-17
6 Skopek, J., Vomela, L., Tajc, L. and Polansky, J., "Partial Steam Admission in an Axial Turbine Stage," IMechE 1999 C557/077/99, 1999, pp.681-691
7 Epstein, A. H., "Millimeter-Scale, Micro- Electro-Mechanical Systems Gas Turbine Engines," J. of Engr. for Gas Turbine and Power, Vol.125, 2004, pp.205-226
8 He, L., "Computation of Unsteady Flow Through Steam Turbine Blade Row at Partial Admission," Proc. Instn. Mech. Engineers, Vol. 211 Part A, 1997, pp.197-205
9 Robert C. Kohl, Howard Z. Herzig and Warren J. Whitney, "Effects of Partial Admission on Performance of A Gas Turbine," 1949, NACA Technical Note No.1807
10 Bohn, D., Drexler, Chr. and Emunds, R., "Experimental and Theoretical Investigations into the Nonuniform Flow of a Partial Admission Turbine with a Multistage Blading," VGB Kraftwerkstechnik Vol.73, No.8, 1993, pp.610-608
11 Peirs, J., Reynaerts, D. and Verplaetsen, P., "Development of an Axial Micro Turbine for a Portable Gas Turbine Generator," J. of Micromechanics and Microengineering, Vol.13, 2003, pp.190-195   DOI   ScienceOn