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http://dx.doi.org/10.5050/KSNVN.2009.19.7.719

Development of Efficient Numerical Method in Time-domain for Broadband Noise due to Turbulence-cascade Interaction  

Kim, Sang-Ho (부산대학교 대학원 기계시스템설계)
Cheong, Cheol-Ung (부산대학교 기계공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.19, no.7, 2009 , pp. 719-725 More about this Journal
Abstract
An efficient time-domain numerical method for the analysis of broadband noise generation and propagation due to turbulence-cascade interaction is developed. The core algorithm of the present method is based on the B-periodicity of the acoustic response function of the flat-airfoil cascade to the ingesting gust(B denotes the number of airfoils in the cascade). To confirm this periodicity, gust-cascade interaction problem are solved by using the time-domain method, which shows that the incident gust with the circumferential mode number having the same remainders when divided by the airfoil number excites the same acoustic response of the cascade. Using the proposed fast algorithm with this periodicity, we show that the total computation time for the model broadband problem using the total 525 incident gust modes can be reduced to about 1/4 of that taken in using the previous time-domain program.
Keywords
Turbulence-cascade Interaction; Broadband Noise; Mode Decomposition Analysis; Time-domain Numerical Method;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Cheong, C., Jurdic, V. and Phillip, J., 2008, “Modal Acoustic Power of Broadband Noise by Interaction of a Cascade of Flat-plate Airfoils with Inflow Turbulence,” Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 18, No. 1, pp. 61~70   DOI   ScienceOn
2 Tyler, L. M. and Sofrin, T. G., 1962, “Axial Flow Compressor Noise Studies,” Transactions of the Society of Automotive Engineers, Vol. 70, pp. 309~332
3 Giles, M. B., 1990, “Nonreflecting Boundary Condition for Euler Equation Calculations,” AIAA Journal, Vol. 28, No. 12, pp. 2050~2058   DOI
4 Cheong, C., Jung, S. S., Cheung, W. S. and Lee, S., 2006, “Time-domain Computation of Broadband Noise due to Turbulence-cascade Interaction,” Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 16, No. 3, pp. 263~269   DOI   ScienceOn
5 Lee, D. J. and Lee, S., 2004, “Development Trends in Aerospace Industry and Outside the Country,” Journal of KSNVE, Vol. 14, No. 4, pp. 29~39
6 Lee, S. and Cheong, C., 2004, “Application on Noise and Vibration Techniques in Aerospace Industry,” Journal of KSNVE, Vol. 14, No. 4, pp. 16~28
7 Choudhari, M. and Fi, F., 1999, “Numerical Boundary Conditions for Simulation of Gust-cascade Interaction,” AIAA, 99-1845
8 Huff, D. L., 1998, “Fan Noise Predictions: Status and Needs,” NASA/TM-97206533, AIAA, 98-0177
9 Tam, C. K. W. and Webb, J. C., 1993, “Dispersion-relation-preserving Finite Difference Schemes for Computational Acoustics,” Journal of Computational Physics, Vol. 107, pp. 262~281   DOI   ScienceOn
10 Hu, F. Q., 2001, “A Stable, Perfectly Matched Layer for Linearized Euler Equations in Unsplit Physical Variables,” Journal of Computational Physics, Vol. 173, pp. 455~480   DOI   ScienceOn
11 Cheong, C., Phillip, J. and Lee, S, 2005, “Computation of Broadband Noise of a 2-D Flat-airfoil Cascade Subject to Ingested Turbulence,” Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 15, No. 6, pp. 687~696   DOI   ScienceOn
12 Sawyer, S., Nallasamy, M., Hixon, R., Dyson, R. W. and Koch, L. D., 2003, “Computational Aeroacoustic Prediction of Discrete-frequency Noise Generated by a Rotor-stator Interaction,” AIAA, 2003-3268