ME Graduate Seminar: Combustion Fundamentals at Engine-Relevant Conditions

Wednesday, September 19, 2018
10:00 am to 10:50 am
Floor/Room #: 
218

WPI ME Graduate Seminar Series 2018-2019


Combustion Fundamentals at Engine-Relevant Conditions

Jagannath Jayachandran
Aerospace Engineering
Worcester Polytechnic Institute 

10:00-10:50 am, Wednesday, September 19
Higgins Labs 218


Reacting flow phenomena occurring in engines are complicated as a result of turbulent flow, interaction with solid boundaries, and extreme thermodynamic conditions.  In order to understand and simulate combustion phenomena under such conditions, there is a necessity to develop accurate chemical kinetic and molecular transport models in addition to fluid mechanics models.  Measurement of fundamental flame properties using low-dimensional experiments while avoiding complications associated with turbulence, heat loss, and instabilities is central to model development. These measurements form targets against which models have to be validated and their uncertainties to be constrained. Knowledge of laminar flame ignition, propagation, extinction, and dynamic response to external transient effects is also crucial to the development of low-order, physics-based models that are necessary to design and optimize engines; current computational resources are not sufficient to simulate engine phenomena from first principles.
 
In this talk, first, I will give an overview of my research interests and directions of research I am planning to pursue in the near future. The emphasis will be on strategies to probe fundamental combustion phenomena at conditions of high pressure and temperature. Following this, a recent study that was carried out to understand the effects of transient pressure rise on combustion phenomena will be discussed.


About the Speaker

Jagan

Jagannath Jayachandran joined WPI this fall as an Assistant Professor in Aerospace Engineering. He completed his Ph.D. and post-doctoral tenure at the University of Southern California. His research interests include aerodynamic and kinetic processes in flames, physical and chemical processes at extreme thermodynamic conditions, high-speed air-breathing propulsion, rocket propulsion, detailed modeling of reacting flows, and laser-based experimental

Audience(s): 
DEPARTMENT(S):