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Group - Graduate Students


Mac Haas

Title:  Graduate Student
:  Fundamental oxidation kinetics of alternative fuels. Small molecule oxidation chemistry. Reactor design.
Affiliation: Combustion Lab, MAE Dept, Princeton University
Education: MA, Mechanical and Aerospace Engineering, Princeton University, 2008; BSEnvE and BSChE, Drexel University, 2006
Hometown: Houston, Texas
Send email to Mac 

Mac's professional interest focuses on the experimental determination of elementary reaction rates important to combustion (e.g., for H+O2+M), as well as the utilization and manufacture of bio- and other alternative fuels (alcohols, esters, and synfuels). Much of his work at Princeton examines the high temperature (500-2000K) pyrolysis and oxidation features of these alternative fuels and their blends with conventional fuels through experimentation (VPFR, HPLFR, IQT) and chemical kinetics modeling. He is additionally interested in the design and validation of experimental reactor systems, including the recently constructed high pressure laminar flow reactor (HPLFR).


Joshua S. Heyne

Title:  Graduate Student
:  Evaluation of MURI fuel surrogates and alternative fuel blends Derived Cetane Numbers (DCNs)
Affiliation: Combustion Lab, MAE Dept, Princeton University
Education: MS, Mechanical Engineering, The Pennsylvania State University, 2009
Hometown: Dayton, Ohio
Send email to Josh 

Josh is currently working on the development of Jet-A fuel surrogates and their appropriate chemical kinetic models and sub-models. Future interests include investigating combustion properties and developing kinetic models for alternative fuels from Fischer-Tropsch synthesis, biomass, and coal liquefaction with a focus on the minimization of environmental impact.

Recently a brief investigation regarding the use of graphene nano-particles to enhance combustion properties in aviation fuels has been studied using an Ignition Quality Tester (IQT™). The IQT™ measures the Derived Cetane Number (DCN), autoignition propensity, of a fuel. The nano-particles have been shown to enhance the flame speed of nitromethane. The nano-particles were doped into regular Jet-A (POSF 4658) and a jet fuel surrogate composed of hexadecane, decalin, and naphthalene and the respective DCNs were measured.