Research

 
Quantitative Laser Diagnostics Laboratory

We focus on developing and applying laser-based and other optical measurement techniques to enable studies of mass and energy transfer at high pressures and high temperatures in mechanically restricted and vibrating environments, such as present in IC engines, stationary combustion, and multi-phase mixing processes.

Our research philosophy includes collaborations with others to form strong teams that jointly pursue some of the challenges in applied combustion science and engineering starting with first principles all the way to the product. We frequently host visitors from other universities (nationally and internationally) and industry. Our major collaborators at this time are General Motors R&D, General Motors Powertrain, Technische Universität Darmstadt, University of Wisconsin-Madison, Penn State University, Shanghai Jiao Tong University, Sandia National Laboratory, and the Michigan Economic Development Corporation (MEDC).

The sub-pages show examples of this work, past and present.
Time sequence of the injection and mixing processes in a direct-injection engine. Recorded with high-frame rate PIV and LIF (Peterson and Sick, Applied Physics B  97 (4), 887-895 (2009) )


Automated analysis procedures for high-speed imaging data are critically important to a) handle the flood of data and to b) utilize strategies that build on the strength of information contained in large data sets. The example below shows a a sequence of modes from Proper Orthogonal Decomposition of the high frame rate LIF images shown above. (Chen, H., Reuss, D. L. and Sick, V., "Analysis of misfires in a direct injection engine using Proper-Orthogonal Decomposition," Experiments in Fluids  (2011)    10.1007/s00348-011-1133-z)