Wing-Tip Vortices/Lifting Wakes

W J Devenport and G Sharma, "Farfield turbulence structure of the tip vortex shed by a single rectangular wing", Eighth Symposium on Turbulent Shear Flows, Munich, Germany, September 7-9, 1991.

W J Devenport, S A L Glegg and G Sharma, "Turbulence measurements in trailing vortices for B.W.I. noise prediction", VPI-AOE-192, AOE Dept., VPI&SU, 1992, submitted as NASA contractor report.

W J Devenport, M C Rife, S I Liapis and J Miranda, "Turbulent trailing vortices", AIAA 32nd Aerospace Sciences Meeting, Reno, Nevada, January 10-13, 1994, AIAA paper 94-0404.

W J Devenport, M Rife, S Liapis and G Follin, "Turbulence structure and scaling in trailing vortices", AIAA 33rd Aerospace Sciences Meeting, Reno, Nevada, January 9-12, AIAA Paper 95-0588.

M A Engel and W J Devenport, 1995, "A wind-tunnel investigation of a wing-tip trailing vortex", Report VPI-AOE-218, Dept. of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg VA.

W J Devenport, M C Rife, S I Liapis and G J Follin, "The Structure and Development of a Wing-Tip Vortex", Journal of Fluid Mechanics, vol. 312, pp. 67-106, 1996.

Miranda, J.A., and Devenport, W.J., "Two-Point Measurements in Trailing Vortices," AIAA 34th Aerospace Sciences Meeting and Exhibit, Reno, NV, Jan 15-18, 1996, AIAA 96-0804. PDF copy of paper

Miranda, J.A. and Devenport, W.J., "An Experimental Investigation of the Structure of a Trailing Vortex Wake," Technical Report VPI-AOE-233, Department of Aerospace and Ocean Engineering, Virginia Polytechnic Institute and State University, May, 1996.

G. J Follin and W J. Devenport, "Effects on the Turbulent Structure of a Counter-Rotating Vortex Pair", AIAA 27th Fluid Dynamics Conference, June 17-20 1996, New Orleans, LA.

G J Follin and W J Devenport, 1996, "The turbulence structure of trailing vortex wakes", Report VPI-AOE-235, Dept. of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg VA, submitted to NTIS.

J A Miranda and W J Devenport, "Turbulence structure in the spiral wake shed by a lifting wing", AIAA Journal, vol. 36, no.4, pp. 658-660, 1998.

K S Youssef, S A Ragab, W J Devenport and A F Abdel Gawad, "Large eddy simulation in the near wake of a rectangular wing", AIAA 36th Aerospace Sciences Meeting, Reno, Nevada, January 1998. AIAA 98-0317.

S Bereketab and W J Devenport, "Complex Equilibrium of Laterally Curved Turbulent Wakes", 37th AIAA Aerospace Sciences Meeting and Exhibit, January 11-14, 1999, Reno NV, AIAA 99-0680.


Tip vortex pairs

J S Zsoldos and W J Devenport, "Flow visualizations of interacting wing-tip vortex pairs", Report VPI-AOE-188, AOE Dept., VPI&SU, 1991.

J S Zsoldos and W J Devenport, "An experimental investigation of interacting trailing vortex pairs", Proceedings of the 19th Symposium on Naval Hydrodynamics, Seoul, South Korea, August, 1992.

J S Zsoldos and W J Devenport, "An experimental investigation of interacting wing-tip vortex pairs", Report VPI-AOE-191, AOE Dept., VPI&SU, 1992, submitted as DARPA report.

W J Devenport, C Vogel and J S Zsoldos, "Turbulence in trailing vortex pairs", 20th Symposium on Naval Hydrodynamics, Santa Barbara, CA, August 1994.

C M Vogel, W J Devenport and J S Zsoldos, "Turbulence structure of a pair of merging tip vortices", 10th Symposium on Turbulent Shear Flows, Pennsylvania State University, August 14-16, 1995.

C M Vogel and W J Devenport, 1995, "The source and evolution of turbulence in trailing vortex pairs", Report VPI-AOE-217, Dept. of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg VA.

W J Devenport, J S Zsoldos and C M Vogel, 1997, "The structure and development of a counter-rotating wing-tip vortex pair", Journal of Fluid Mechanics, vol 332, pp. 71-104.

W J Devenport, C M Vogel and J S Zsoldos, "Flow structure produced by the interaction and merger of a pair of co-rotating wing-tip vortices", Journal of Fluid Mechanics, in press.


Perpendicular blade-vortex interactions

K S Wittmer, W J Devenport, M C Rife and S A L Glegg, "Perpendicular blade vortex interaction", AIAA Journal, vol. 33, no. 9, pp. 1667-1674, 1995.

K S Wittmer, W J Devenport, M C Rife and S A L Glegg, "Perpendicular blade-vortex interaction", AIAA 32nd Aerospace Sciences Meeting, Reno, Nevada, January 10-13, 1994, AIAA paper 94-0526.

W J Devenport, S A L Glegg, K S Wittmer and M C Rife, "Perpendicular blade-vortex interaction and its implications for helicopter noise prediction", Final Technical Report to NASA Langley under grant NAG-1-1119, AOE Dept., VPI&SU, 1993.

K S Wittmer, W J Devenport, Michael C. Rife and S A L Glegg, "Perpendicular blade vortex interaction: velocity measurements", Report VPI-AOE-215, August 1994.

K S Wittmer and W J Devenport, "Interaction of a streamwise vortex with a full--span blade", 26th AIAA Fluid Dynamics Conference, June 19-22, 1995, San Diego CA, AIAA-95-2214. PDF copy of paper

K S Wittmer and W J Devenport, "Flow structure generated by perpendicular blade vortex interaction and implications for helicopter noise predictions. Volume 1: Measurements", submitted as NASA contractor report, January 1996.

K. S. Wittmer and W. J. Devenport, "Turbulence structure resulting from a perpendicular airfoil vortex interaction", AIAA 27th Fluid Dynamics Conference, June 17-20 1996, New Orleans, LA.

K S Wittmer, W J Devenport, "Turbulence structure resulting from a vortex--blade tip interaction", AIAA 35th Aerospace Sciences Meeting, Reno, Nevada, January 1997, AIAA 97-0047.

Devenport W J, Wittmer K S, Wenger C W, 1997, "The spectral and statistical properties of turbulence generated by a vortex/blade-tip interaction", AOE Dept., Virginia Tech, submitted as NASA CR.

K S Wittmer, W J Devenport and C W Wenger, "Turbulence Structure Resulting from a Vortex/Blade Tip Interaction", Journal of the American Helicopter Society, vol. 44, no. 2, pp. 141-149, April 1999.

K S Wittmer and W J Devenport, "Effects of Perpendicular Blade Vortex Interaction. Part 1: Turbulence Structure and Development", AIAA Journal, vol. 37, no. 7, pp. 805-812, July 1999.

K S Wittmer, W J Devenport and S A L Glegg, "Effects of Perpendicular Blade Vortex Interaction. Part 2: Parameter Study", AIAA Journal, vol. 37, no. 7, pp. 813-817, July 1999.


Aeroacoustics

W J Devenport, S A L Glegg and G Sharma, "Turbulence measurements in trailing vortices for B.W.I. noise prediction", VPI-AOE-192, AOE Dept., VPI&SU, 1992, submitted as NASA contractor report.

S A L Glegg and W J Devenport, "The application of experimental data to blade wake interaction noise prediction", Sixth International Symposium on Unsteady Aerodynamics, Aeroacoustics and Aeroelasticity of Turbomachines and Propellers, University of Notre Dame, IN, September 15-19, 1991.

S A L Glegg, K S Wittmer and W J Devenport, "Flow structure generated by perpendicular blade vortex interaction and implications for helicopter noise predictions. Volume 2: Helicopter noise predictions", submitted as NASA contractor report, January 1996.

W J Devenport, C W Wenger, S A L Glegg and J A Miranda, "Wavenumber frequency spectra of turbulence in a lifting wake for broadband noise prediction", 3rd AIAA/CEAS Aeroacoustics Conference, May 12-14, 1997, Atlanta, GA, AIAA-97-1699.

S A L Glegg, K S Wittmer, W J Devenport and D S Pope, "Broadband helicopter noise generated by blade-wake interactions", AHS Specialists Meeting for Rotorcraft Acoustics and Aerodynamics, October 28-30, 1997, Williamsburg VA.

W J Devenport, C W Wenger, S A L Glegg and J A Miranda, "Wavenumber frequency spectra in a lifting wake for broadband noise prediction", AIAA Journal, vol. 36, no. 6, pp. 881-887, 1998.

S A L Glegg, K S Wittmer, W J Devenport and D S Pope, "Broadband Noise Generated by Blade Wake Interactions", Journal of the American Helicopter Society, accepted pending revision.

S A L Glegg and W J Devenport, "Descriptions of turbulence for hydroacoustic applications", 5th International Congress on Sound and Vibration, University of Adelaide, South Australia, December 15-18, 1997.

W J Devenport, C Muthanna, R Ma and S A L Glegg, "Measurement and Modeling of the Two-point Correlation Tensor in a Plane Wake for Broadband Noise Prediction", First Intenational Symposium on Turbulence and Shear Flow Phenomena", Santa Barbara, CA, September 12-15, 1999.

Devenport W J, Wittmer K S, Wenger C W, 1997, "The spectral and statistical properties of turbulence generated by a vortex/blade-tip interaction", AOE Dept., Virginia Tech, submitted as NASA CR.

W J Devenport, C Muthanna and R Ma, 1999, "Measurement and Modeling of the Two-point Correlation Tensor in a Plane Wake for Broadband Noise Prediction", Report VPI-AOE-263, AOE Dept., Virginia Tech.

Mish P, Wang H, Bereketab S, and Devenport W, "Measurement of the Space-Time Correlation of Surface Pressure Fluctuations on an Airfoil Immersed in Turbulence", Fluids 2000, Denver, CO, 19-22 June 2000 [Download]

Mish, Patrick F. and Devenport, William J., "Mean Loading Effects on the Surface Pressure Fluctuations on an Airfoil in Turbulence", 7th AIAA/CEAS Aeroacoustics Conference, Maastricht, The Netherlands, 28-30 May 2001 [Download]

Mish, Patrick F., Devenport, William J., and Borgoltz, Aurelien G., "Evaluation and further analysis of unsteady pressure response measurements on an airfoil at angle of attack", 8th AIAA/CEAS Aeroacoustics Conference, Breckenridge, Colorado, 17-19 June 2002 [Download]

Casper J, Farassat F, Mish P F, Devenport W J, 2003, "Broadband Noise Predictions for an Airfoil in a Turbulent Stream", AIAA paper no. 2003-0366, 41st Aerospace Sciences Meeting & Exhibit, Reno, Nevada, 6-9 January 2003 [Download]

A Borgoltz, D Geiger and W J Devenport, 2004, "Analysis of Wakes Shed By idealized Aircraft Engine Fan Blades for Noise Reduction", AIAA 10th AIAA-CEAS Aeroacoustics Conference, Manchester, UK, AIAA2004-2912. [Download .pdf 1.8M]

D L Grissom and W J Devenport, "Development and Testing of a Deterministic Disturbance Generator", AIAA 10th AIAA-CEAS Aeroacoustics Conference, Manchester, UK, AIAA2004-. [Download .pdf 0.6M]


Tip leakage vortex aerodynamics

W J Devenport, K S Wittmer, C Muthanna, S Bereketab and J Moore, "Turbulence structure of a tip leakage vortex wake", AIAA 35th Aerospace Sciences Meeting, Reno, Nevada, January 1997, AIAA-97-0440.

W J Devenport, K S Wittmer, C Muthanna, "Turbulence structure in tip leakage vortex wakes", submitted to AIAA Journal.

C Muthanna, K S Wittmer and W J Devenport, "Turbulence structure of the flow downstream of a compressor cascade with tip leakage", AIAA 36th Aerospace Sciences Meeting, Reno, Nevada, January 1998. AIAA 98-0420.

C W Wenger, W J Devenport, K S Wittmer and C Muthanna, "Two-Point Measurements in the Wake of a Compressor Cascade", 29th AIAA Fluid Dynamics Conference, June 15-18, 1998, Albuquerque NM, AIAA 98-2556.

Y. Wang, C. Muthanna and W J Devenport, "The Design and Operation of a Moving Endwall System for a Compressor Cascade Wind Tunnel", 37th AIAA Aerospace Sciences Meeting and Exhibit, January 11-14, 1999, Reno NV, AIAA 99-0741.

S Shin, S A Ragab and W J Devenport, "Numerical Simulation of Highly Staggered Cascade Flow Using an Unstructured Grid", 30th AIAA Fluid Dynamics Conference, Norfolk, VA, June 28-July 1, 1999, AIAA 99-3713.


Blade Blocking Effects on Large Scale Isotropic Grid Turbulence

Larssen, J.V. & Devenport, W.J., 2003, Interaction of Large Scale Homogeneous Turbulence with a Cascade of Flat Plates, AIAA-2003-0424. [Download .pdf, 0.9M]

Larssen, J.V. & Devenport, W.J., 2002, The Generation of High Reynolds Number Homogeneous Turbulence, AIAA-2002-2861. [Download .pdf, 0.6M]


Instrumentation

W J Devenport and E J Smith, "The diode array velocimeter", Journal of Fluid Mechanics, vol. 259, pp 167-189, 1994.

K. S. Wittmer and W J Devenport, "Velocity measurements using a four-sensor hot-wire probe", BBAA III Colloquium, Virginia Tech, 1996.

K S Wittmer, W J Devenport and J S Zsoldos, "A Four-Sensor Hot-Wire Probe System for Three-Component Velocity Measurements", Experiments in Fluids, in press.

C W Wenger and W J Devenport, "A seven hole pressure probe measurement system and calibration method utilizing error tables", AIAA 36th Aerospace Sciences Meeting, Reno, Nevada, January 1998. AIAA 98-0202.

C W Wenger and W J Devenport, "A seven hole pressure probe measurement system and calibration method utilizing error tables", AIAA Journal, vol. 37, no. 6, June 1999.