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The Flowfield Imaging Laboratory
Welcome to the Flowfield Imaging Lab. We are part of the Department of Aerospace Engineering and Engineering Mechanics at the University of Texas at Austin. We do research and teaching in the primary areas of turbulent mixing/combustion and high speed shear flows. Our work emphasizes the application and development of laser diagnostics to help us understand the physics of complex turbulent flows.

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Latest Projects
Recent Publications

Flowfield Physics of a Mach 3 Hypermixer
Ross Burns and NT Clemens

Imaging of Ablation Products Transport in Supersonic Flows
Chris Combs and and NT Clemens

Control of Shock/Boundary Layer Interaction Distortion Using Pulsed Plasma Jets
Benton Greene and NT Clemens

Studies of Sooting Jet Flames using Kr Fluorescence
Okjoo Park and NT Clemens

Boundary Layer Flashback in Swirl Flames
Dominik Ebi and N.T. Clemens

Scalar Imaging in Supersonic Flows with Kr PLIF
Venkat Narayanaswamy and NT Clemens

Flashback in High-Pressure Swirl Flames
Rakesh Ranjan, Dominik Ebi and NT Clemens

Thermal Non-equilibrium in Supersonic Jet Mixing & Combustion
Heath Reising, Timothy Haller, NT Clemens
and P Varghese



Low-Frequency Unsteadiness of Shock Wave/ Boundary Layer Interactions, N. Clemens and V Narayanaswamy, Annual Review of Fluid Mechanics, Vol. 46, pp. 469-492, 2014.

Time-Resolved PIV and Flame Front Imaging of Boundary Layer Flashback in a Swirl Combustor, D. Ebi and N.T. Clemens, 17th International Symposium on Application of Laser Techniques to Fluid Mechanics, Portugal, July 7-10, 2014.

Visualization of Capsule Reentry Vehicle Heat Shield Ablation using Naphthalene PLIF, C. Combs, N.T. Clemens and P. Danehy, 17 International Symposium on Application of Laser Techniques to Fluid Mechanics, Portugal, July 7-10, 2014.

Vibrational Non-equilibrium Effects in Supersonic Jet Mixing, H. Reising, U. KC, S. Voelkel, N.T. Clemens, V. Raman, P. Varghese, H. Koo, AIAA paper #2014-0231, 52nd Aerospace Sciences Meeting, January 2014.

Volumetric PIV and 2D OH PLIF Imaging in the Far-Field of a Low-Reynolds Number Nonpremixed Jet Flame, M. Gamba, N.T. Clemens and O.E. Ezekoye, Measurement Science and Technology, Vol. 24, pp. 024003 (20 pp), 2013.

Control of Unsteadiness of a Shock Wave / Turbulent Boundary Layer Interaction by using a Pulsed-Plasma Jet Actuator, V. Narayanaswamy and N.T. Clemens, Physics of Fluids, Vol. 24, pp. 076101 (22 pp), 2012.