UTIAS Seminar Series
Sound sources in premixed flames
Lecture Hall, University of Toronto Institute for Aerospace StudiesAbstract: Lean premixed combustion is the desired combustion regime in industrial gas turbines. It results in a low level of NOX emissions due to operating at lower temperatures and facilitates better combustion efficiency. However, the main issue with operating gas turbines in this regime is thermoacoustic instability, commonly initiated by combustion-generated sound. This issue is […]
Physics-driven control of complex fluid flows
Lecture Hall, University of Toronto Institute for Aerospace StudiesAbstract: The ability to control fluid flow behaviors can lead to quiet, economical, and efficient systems in fluid mechanics and aerodynamics. Because of high dimensionality, strong nonlinearity, and complexity in fluid physics, the design of effective control strategies can be challenging. My research focuses on uncovering the underlying physics of complex fluid flows using the […]
Opportunities and Perspectives from the Aerospace Industry
Bio: Nimeesha Kuntawala is a Product Development Team Lead in the Flight Sciences directorate at Gulfstream Aerospace. She has been at Gulfstream for 7 years. She started at Gulfstream as a Technical Specialist in Aircraft Performance in 2016, helping to flight test and certify the G500 and G600. In 2019, she became the Group Head […]
A Variational Theory of Aero-hydrodynamics
A Variational Theory of Aero-hydrodynamics The Euler equation does not possess a unique solution for the flow over a two-dimensional object. This problem has serious repercussions in aerodynamics; it implies that the inviscid aero-hydrodynamic lift force over a two-dimensional object cannot be determined from first principles; a closure condition must be provided. The Kutta condition […]
Bayesian Sequential Optimal Experimental Design
Lecture Hall, University of Toronto Institute for Aerospace StudiesSpeaker: Xun Huan Date & time: Thursday, June 8th, 1pm Location: UTIAS Lecture Hall Title: Bayesian Sequential Optimal Experimental Design Abstract: Experiments are crucial for developing and refining models in engineering and science. When experiments are expensive, a careful design of these limited data-acquisition opportunities can be immensely beneficial. Optimal experimental design (OED) thus leverages […]
Dynamics of flow unsteadiness in high-speed double cones and cylinders
Lecture Hall, University of Toronto Institute for Aerospace StudiesDate and Time: July 7, 11 AM Venue: UTIAS Lecture Hall, AS 158 Abstract: External flows in the high-speed (compressible) regime with regions of flow separation often present rich fluid-dynamical features. An aspect of such flows that is particularly interesting is temporal unsteadiness, which is typically driven by interaction of shock waves with flow […]
Unique Dynamics of Reacting Systems Under Near Limit Conditions
Lecture Hall, University of Toronto Institute for Aerospace StudiesSpeaker: Prof. Tanvir Farouk Professor, Department of Mechanical Engineering, University of South Carolina Today’s energy technologies have been moving toward operating at near-limit conditions to achieve higher efficiency, lower emission, and fuel variability. Under these near limit conditions chemical kinetics and the thermo-fluid dynamics couple more distinctively in a reacting flow system. This talk discusses […]
Frontiers of RPAS technology and regulation: from principles to practice
Lecture Hall, University of Toronto Institute for Aerospace StudiesAbstract In this joint seminar, engineers from Transport Canada and Ribbit will discuss the latest Canadian regulations for Remotely Piloted Aircraft Systems (RPAS, i.e. drones), and how they apply to the development and testing of novel drone concepts. Transport Canada will lead the first half of the seminar, laying a rigorous foundation in the philosophy […]
Autonomous Forced Landing of Unmanned Aircraft Systems
Lecture Hall, University of Toronto Institute for Aerospace StudiesAbstract Unmanned aircraft systems are gradually penetrating into civil aviation, sharing airspace with manned aircraft. Safely is of paramount importance in future mixed aviation environment. Research has been carried out in addressing mid-air safety such as see and avoid, and safe separation, but much less on terminal operation and active contingence management. This talk focuses […]
Physics of turbulent combustion of hydrogen: contemporary understanding and fundamental challenges
Lecture Hall, University of Toronto Institute for Aerospace StudiesAbstract: This presentation will aim at highlighting and discussing the following important peculiarity of combustion of lean hydrogen-air mixtures. High molecular diffusivity of hydrogen can result in significant local variations in mixture composition, temperature, fuel consumption and heat release rates due to imbalance of molecular fluxes of chemical and thermal energies to and from stretched […]