- Effects of Upstream Boundary Layer on the Unsteadiness of Shock Induced Separation, Ganapathisubramani, B., Clemens, N.T. and Dolling, D.S., submitted to Journal of Fluid Mechanics, May 2006.
- Planar Imaging Measurements to Study the Effect of Spanwise Structure of Upstream Turbulent Boundary Layer on Shock Induced Separation, B. Ganapathisubramani, N.T. Clemens, and D.S. Dolling, AIAA-2006-324, 44th AIAA Aerospace Sciences Meeting and Exhibit. Reno, Nevada January 2006.
- Experimental Studies of Transitional Boundary Layer Shock Wave Interactions, Z.R. Murphree, J. Jagodzinski, E.S.Hood, Jr., N.T. Clemens, and D.S. Dolling, AIAA-2006-326-768, 44th AIAA Aerospace Sciences Meeting and Exhibit. Reno, Nevada, January 2006.
- Generation of Plasma Incuced Flow Actuation by DC Glow-like Discharge in a Supersonic Flow, J. Shin, V. Narayanaswamy, L.L. Raja, and N. Clemens, AIAA-2006-169-953, 44th AIAA Aerospace Sciences Meeting and Exhibit. Reno, Nevada January 2006.
Numerical Study of the Evolution of Strongly Forced Axisymmetric Laminar Cold-Flow Jets, Barve, V.V., Ezekoye, O.A., Clemens, N.T. and Katta, V.R., AIAA Journal, to be published, 2006.
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Large-Scale Motions in a Supersonic Turbulent Boundary Layer, Ganapathisubramani, B. and Clemens, N. T. and Dolling, D.S., Journal of Fluid Mechanics, Vol. 556, pp. 271-282, 2006.
- A Note on the Effect of Laser Pulse Duration on Particle Image Velocimetry, Ganapathisubramani, B. and Clemens, N. T., AIAA Journal, to be published, 2006.
- Effects of Unsteady Strain Rate on Scalar Dissipation Structures in Turbulent Planar Jets, P.S. Kothnur and N.T. Clemens, Physics of Fluids, Vol.17, Issue 12, article 125104, 2006.
- Characteristics of Strongly-Forced Turbulent Nonpremixed Jet Flames, K. Lakshminarasimhan, N.T. Clemens and O.A. Ezekoye, submitted to Experiments in Fluids, to be published.
- Mixing Characteristics in Stongly-Forced Nonpremixed Methane Jet Flames, K. Lakshminarasimhan, N.T. Clemens and O.A. Ezekoye, Proceedings of the Combustion Institute, Vol. 31, to be published, 2006.
- Two-Point, High-Repitition Rate Rayleigh Thermometry in Flames: Techniques to Correct for Apparent Dissipation Induced by Noise, G.Wang, N.T. Clemens and P.L. Varghese, Applied Optics, Vol.44, Issue 31, pp.6741-6751, 2005.
- High-Repetition Rate Measurements of Temperature and Thermal Dissipation in a Nonpremixed Turbulent Jet Flame, G. Wang, N.T. Clemens and P.L. Varghese, Proceedings of the Combustion Institute, Vol. 30, pp.691-699, 2005.
- Cavity Oscillation Mechanisms in High-Speed Flows, Ö.H. Ünalmis, N.T. Clemens and D.S. Dolling, AIAA Journal, Vol. 40, No. 10, pp. 2035-2041, 2004.
- Characteristics of Turbulent Nonpremixed Jet Flames under Normal- and Low-Gravity Conditions, C.A. Idicheria, I.G. Boxx and N.T. Clemens, Combustion and Flame, Vol. 138, pp. 384-400, 2004.
- Effects of Imaging System Blur on Measurements of Flow Scalars and Scalar-Gradients, G.H. Wang and N.T. Clemens, Experiments in Fluids, Vol. 37, pp. 194-205, 2004.
- Kilohertz PIV/PLMS of low-gravity turbulent flames in a drop tower I.G. Boxx, C.A. Idicheria and N.T. Clemens. 12th International Symposium on Application of Laser Techniques to Fluid Mechanics. Lisbon, Portugal, 2004. (Download in PDF Format),
- Role of Upstream Boundary Layer Velocity Fluctuations on Unsteadiness of Mach 5 Blunt-Fin Interactions, Y.X. Hou, Ö.H. Ünalmis, P.C. Bueno, N.T. Clemens and D.S.Dolling, AIAA Journal, Vol. 42, No. 12, pp. 2615-2619, 2004.
- Characteristics of Turbulent Nonpremixed Jet Flames in Different Gravity Levels, C.A. Idicheria, I.G. Boxx and N.T. Clemens, Paper no. A-21, Proceedings of the Third Joint Meeting of the Combustion Institute, Chicago, IL, 2003.
- The Structure of Fine-Scale Scalar Mixing in Gas-Phase Planar Turbulent Jets, L.K.Su and N.T. Clemens, Journal of Fluid Mechanics, Vol. 488, pp. 1-29, 2003.
- An exploratory study of the effects of buoyancy on turbulent nonpremixed ethylene jet flames in crossflow.
I. G. Boxx, C. A. Idicheria and N. T. Clemens,
AIAA-2003-1151,
AIAA 41st Aerospace Sciences Meeting, 2003.
- The structure of dissipative scales in axisymmetric turbulent gas-phase jets. M. S. Tsurikov and N. T. Clemens, AIAA-2002-0164 , AIAA 40th Aerospace Sciences Meeting, 2002.
- The Relationship Between Upstream Turbulent Boundary Layer Velocity Fluctuations and Separation Shock Unsteadiness, S.J. Beresh, N.T. Clemens and D.S. Dolling, AIAA Journal, Vol. 40, No. 12, pp. 2412-2422, 2002.
- Planar Imaging of CH, OH and Velocity in Turbulent Non-Premixed Jet Flames, P.S. Kothnur, M.S. Tsurikov, N.T. Clemens , J.M. Donbar & C.D. Carter, Proceedings of the Combustion Institute, Vol. 29, pp.1921-1927, 2002.
- Experimental Study of the Transient Underexpanded Jet Generated by an Electrothermal Capillary Plasma, J.U. Kim, N.T. Clemens and P.L. Varghese, AIAA Journal of Propulsion and Power, Vol. 18, No. 6, pp.1153-1160, 2002.
- Characterization of a High-Density Plasma Produced by Electrothermal Capillary Dishcharge, J.U. Kim, N.T. Clemens, and P.L. Varghese, Applied Physics Letters, Vol. 80, pp.368-370, 2002 and Vol.80, p.2806, 2002 (Erratum).
- Flow Imaging, N.T. Clemens, In Encyclopedia of Imaging Science and Technology, John Wiley and Sons, New York, 2002.
- Experimental Study of Shear-Layer/Acoustics Coupling in Mach 5 Cavity Flow, Ünalmis, Ö.H., Clemens, N.T., and Dolling, D.S., AIAA Journal, Vol. 39, No. 2, Feb. 2001, pp.242-252.
- Scalar / velocity imaging of the fine scales in gas-phase
turbulent jets, M. S. Tsurikov and N. T. Clemens, AIAA Paper 2001-0147 ,
AIAA 39th Aerospace Sciences Meeting, 2001
(download in PDF format:
paper text and
paper figures)
- Large-Scale Flow Structure in Turbulent Nonpremixed Flames in
Normal- and Low-Gravity Conditions
, C. A. Idicheria, I. G. Boxx and N. T. Clemens,
AIAA-2001-0628,
AIAA 39th Aerospace Sciences Meeting, 2001.
- Experimental Investigation of the Relationship between Strain and Dissipation Layers in a gas-phase Turbulent Jet, P. S. Kothnur and N. T. Clemens,
AIAA-2001-1023,
AIAA 39th Aerospace Sciences Meeting, 2001.
- PIV Investigation of Role of Boundary Layer Velocity Fluctuations in Unsteady Shock-Induced Separation, Ö.H. Ünalmis, Y.X. Hou, P.C. Bueno, N.T. Clemens, and D.S. Dolling, AIAA 2000-2450, 21st Aerodynamic Measurement Technology and Ground Testing Conference, 2000.
- Neutralization of Explosives by Plasma Jet Impingement: Feasability Study, J.U. Kim, K. Kim, D.E. Wilson, D.R. Peterson and N.T. Clemens, IEEE Transactions on Plasma Science, Vol. 28, No.1, pp.312, 2000.
- Planar Laser Imaging of a Supersonic Side-Facing Cavity,
Ö.H. Ünalmis, N.T. Clemens, and D.S. Dolling, AIAA 99-0297,
37th Aerospace Sciences Meeting, 1999.
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High-resolution PIV/PLIF measurements of a gas-phase turbulent jet,
M.S. Tsurikov, J.E. Rehm, and N.T. Clemens,
AIAA 99-0930, 37th Aerospace Sciences Meeting, 1999.
- The Association of Scalar Dissipation Rate Layers and OH Zones with Strain, Vorticity, and 2-D Dilatation Fields in Turbulent Nonpremixed Jets and Jet Flames
, J. E.
Rehm & N. T. Clemens,
AIAA-99-0676,
37th Aerospace Sciences Meeting, 1999.
- Experimental Study of an Underexpanded Pulsed Plasma-Jet, Jong-Uk Kim, N. T. Clemens and P. L. Varghese,
AIAA-99-0452, 37th Aerospace Sciences Meeting, 1999
- Planar Measurements of the Full Three-Dimensional Scalar Dissipation Rate in Gas-Phase Turbulent Flows,
L.K. Su and N. T. Clemens,
Experiments in Fluids, Vol. 27, pp. 507-521, 1999.
- Emission Spectroscopic Measurements and Analysis of a Pulsed Plasma Jet, J. Kohel, L.K. Su, N.T. Clemens & P.L. Varghese, IEEE Transactions on Magnetics,Vol. 35, p.201, 1999.
- The large-scale turbulent structure of planar jet diffusion flames, Rehm, J.E. and Clemens, N.T., Combustion and Flame, Vol. 116, pp. 615-626, 1999.
- An Improved Method for Enhancing Resolution of Conventional Double-Exposure Single-Frame Particle Image Velocimetry, Rehm, J.E. and Clemens, N.T., Experiments in Fluids, Vol. 26, pp. 497-504, 1999.
- The Relationship Between Vorticity/Strain and Reaction Zone Structure in Turbulent Non-Premixed Jet Flames, J. E. Rehm & N. T. Clemens, Twenty Seventh Symposium on Combustion, Boulder, CO, pp. 1113-1120, 1998.
- The Structure of the Three-Dimensional Scalar Gradient in Gas-Phase Planar Turbulent Jets, L.K. Su and N. T. Clemens, AIAA 98-0429, 36th Aerospace Sciences Meeting, 1998.
- The Effects of Large-Scale Turbulent Boundary Layer Structures on a Supersonic Separated Flow, S. J. Beresh, M. Comninos, N. T. Clemens and D.S. Dolling, AIAA 98-0620, 36th Aerospace Sciences Meeting, 1998.
- Planar Laser Imaging of High Speed Cavity Flow Dynamics, Ö.H. Ünalmis, N.T. Clemens, and D.S. Dolling, AIAA 98-0776, 36th Aerospace Sciences Meeting, 1998.
- Experimental Characterization of a Pulsed Plasma Jet, J.M. Kohel, L.K. Su, N.T. Clemens, P.L. Varghese and L. Raja, AIAA 98-0999, 36th Aerospace Sciences Meeting, 1998.
- PLIF imaging of mean temperature and pressure in a supersonic bluff wake, Lachney, E.R. and Clemens, N.T., Experiments in Fluids, Vol. 24, No. 4, pp. 354 - 363, 1998.
- Observations of supersonic flat plate wake transition, Clemens, N.T. and Smith, M.F., AIAA Journal, Vol. 36, No. 7, pp. 1328-1330, 1998.
- Hydrogen/Helium Planar Turbulent Diffusion Flames, Rehm, J.E. and Clemens, N.T., Physics of Fluids, Vol. 9, No. 9, p.S3, September 1997.
- The structure of OH fields in high Reynolds number turbulent jet diffusion flames, Clemens, N.T., Paul, P.H. and Mungal, M.G., Combustion Science and Technology, Vol. 129, pp. 165-184, 1997.
- A PIV/PLIF investigation of turbulent planar non-premixed flames, Rehm, J.E. and Clemens, N.T., AIAA 97-0250, 35th Aerospace Sciences Meeting, 1997.
- Investigation of the causes of large-scale unsteadiness of shock-induced separated flow using laser imaging, Beresh, S.J., Clemens, N.T., Dolling, D.S. and Comninos, M., AIAA 97-0064, 35th Aerospace Sciences Meeting, 1997.
- Large-scale structure evolution in supersonic interacting shear layers, Clemens, N.T., Petullo, S.P. and Dolling, D.S., AIAA Journal, Vol. 34, pp. 2062-2070, 1996.
- The flow structure of planar hydrogen diffusion flames, Rehm, J.E. and Clemens, N.T., AIAA 96-0704, 34th Aerospace Sciences Meeting, 1996.
- Laser 2-D imaging of a compressible flat plate wake, Lachney, E.R., Smith, M.F. and Clemens, N.T., AIAA 96-2220, 26th AIAA Fluid Dynamics Conference, 1995.
- Flowfield imaging of unsteady, separated compression ramp interactions, Chan, S.C., Clemens, N.T. and Dolling, D.S., AIAA 95-2195, 26th AIAA Fluid Dynamics Conference, 1995.
- The effects of heat release on the near field flow structure of hydrogen jet diffusion flames, Clemens, N.T. and Paul, P.H., Combustion and Flame, Vol. 102, pp. 271-284, 1995.