Experimental and Numerical Investigation on Sound Generation From Airfoil-Flow Interaction

JIANG Min; LI Xiao-dong; ZHOU Jia-jian

doi:10.3879/j.issn.1000-0887.2011.06.009

Volume 32 Issue 6

Turn off MathJax

Article Contents

Article Navigation > Applied Mathematics and Mechanics > 2011 > 32(6): 718-729

JIANG Min, LI Xiao-dong, ZHOU Jia-jian. Experimental and Numerical Investigation on Sound Generation From Airfoil-Flow Interaction[J]. Applied Mathematics and Mechanics, 2011, 32(6): 718-729. doi: 10.3879/j.issn.1000-0887.2011.06.009

Citation:

PDF( 11139 KB)

Experimental and Numerical Investigation on Sound Generation From Airfoil-Flow Interaction

doi: 10.3879/j.issn.1000-0887.2011.06.009

School of Jet Propulsion, Beihang University, Beijing 100191, P. R. China

Received Date: 2011-01-18
Rev Recd Date: 2011-04-19
Publish Date: 2011-06-15

Abstract

Abstract

The aerodynamic noise due to the interaction of the incoming turbulence with rotating blades was one of the most important components of wind turbine noise.The rod-airfoil configuration was utilized to investigate the interaction phenomenon both experimentally and numerically.The distribution of unsteady pressure on the airfoil surface was measured for different rod positions and airfoil attack angles.Investigated in the present were two NACA airfoils,NACA0012 and NACA0018,and two wind turbine airfoils,s809 and s825.In addition,for the cases with low angles of attack,the flow field around airfoil leading edge was investigated by particle image velocimetry(PIV).The experimental results indicate that the unsteady pressure disturbances on airfoil surface are relevant to the rod vortex shedding.Meanwhile, the interaction flow field of the rod and NACA0012 airfoil was simulated by unsteady Reynolds averaged Navier-Stokes method(URANS)and the pressure spectra obtained was compared with the experimental results.
- rod-airfoil interaction,
- URANS,
- PIV,
- unsteady pressure

FullText(HTML)

References(10)

References

[1]	Jacob M C, Casalino D. A rod-airfoil experiment as benchmark for broadband noise modeling[J]. Theoretic and Computational Fluid Dynamics, 2005, 19(3): 171-196. doi: 10.1007/s00162-004-0108-6
[2]	Casalino D, Jacob M C, Roger M. Prediction of rod airfoil interaction noise using the FWH analogy[R]. AIAA paper 2002-2543, 2002.
[3]	Boudet J, Grosjean N, Jacob M C. Wake-aifoil interaction as broadband noise source: a large-edgy simulation study[J]. International Journal of Aeroacoustics, 2005, 4(1): 93-115. doi: 10.1260/1475472053730093
[4]	Creschner B, Thiele F, Casalino D, Jacob M C. Influence of turbulence modeling on the broadband noise simulation for complex flows[R]. AIAA paper 2004-2926, 2004.
[5]	Gerolymos G A, Vallet I. Influence of temporal integration and spatial discretization on hybrid RSM-VLES computations[R]. AIAA paper 2007-4094, 2007.
[6]	Carani M, Dai Y, Carani D. Acoustic investigation of rod airfoil configuration with DES and FWH[R]. AIAA paper 2007-4016, 2007.
[7]	Wilcox D C. Reassessment of the scale determining equation for advanced turbulence models[J]. AIAA Journal, 1988, 26(11): 1299-1310. doi: 10.2514/3.10041
[8]	Roe P L. Approximate Riemann solvers, parameter vectors and difference schemes[J]. Journal of Computational Physics, 1981, 43(2): 357-372. doi: 10.1016/0021-9991(81)90128-5
[9]	Rumsey C L. Efficiency and accuracy of time-accurate turbulent Navier-Stokes computations[R]. AIAA paper 95-1835, 1995.
[10]	Pullian T H. Time accuracy and the use of implicit methods[C]11th AIAA Computational Fluid Dynamics Conf. AIAA 93-3360-CP, 1993: 685-693.