Reference number : GC-2017-Q3-00386, amendment number : , agreement type : G, recipient legal name : Steinberg, Adam (University of Toronto), recipient country : CA, recipient province : nan, recipient city : Ontario, recipient postal code : nan, program name english : Collaborative Research and Development Grants - Project, program name french : Subventions de recherche et développement coopérative - projet, program purpose english : This Collaborative Research and Development (CRD) project between the University of Toronto Institute for Aerospace Studies (UTIAS) Experimental Engines (E2) Lab, GE Canada, and the GE Global Research Center (GRC) focuses on preventing thermoacoustic instabilities in gas turbine engines used for electrical power generation. The specific focus is on instabilities arising during the use of liquid fuel in 'dual-fuel' dry low emission combustors. These instabilities are a primary challenge in the design and deployment of robust, low-emission, fuel-flexible power generation engines._x000D_
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Laser and optical measurement techniques developed in the E2 Lab will be deployed at GE GRC to obtain data in realistic gas turbine hardware operating at practical conditions, viz. pressures up to 1.5 MPa, reactant temperatures up to 625 K, combustor thermal powers exceeding 1 MW. The diagnostics to be deployed include high-speed stereoscopic particle image velocimetry (SPIV), fuel droplet scattering, and multi-species chemiluminescence to obtain gas-phase and liquid velocity fields, fuel spray distributions, and heat release rate distributions, respectively. Five experimental campaigns at GRC are planned over the duration of the project, covering various phenomena and conditions. To our knowledge, the resultant data will constitute the most complete experimental information obtained on thermoacoustic instabilities at practical gas turbine conditions._x000D_
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These data will be mined to explain the flow/fuel/flame/pressure coupling that sets the thermoacoustic forcing in various situations. For example, we will explain the initial coupling that allows high-amplitude oscillations to grow from noise. We also will explain the coupling driving the final sustained high-amplitude oscillations. These mechanistic insights will be used to construct a reduced order semi-empirical model for the thermoacoustic forcing. Ultimately, the data will be used to understand thermoacoustic instabilities, improve combustor design, and develop best practices for simulating thermoacoustic instabilities using computational_x000D_
fluid dynamics., program purpose french : This Collaborative Research and Development (CRD) project between the University of Toronto Institute for Aerospace Studies (UTIAS) Experimental Engines (E2) Lab, GE Canada, and the GE Global Research Center (GRC) focuses on preventing thermoacoustic instabilities in gas turbine engines used for electrical power generation. The specific focus is on instabilities arising during the use of liquid fuel in 'dual-fuel' dry low emission combustors. These instabilities are a primary challenge in the design and deployment of robust, low-emission, fuel-flexible power generation engines._x000D_
_x000D_
Laser and optical measurement techniques developed in the E2 Lab will be deployed at GE GRC to obtain data in realistic gas turbine hardware operating at practical conditions, viz. pressures up to 1.5 MPa, reactant temperatures up to 625 K, combustor thermal powers exceeding 1 MW. The diagnostics to be deployed include high-speed stereoscopic particle image velocimetry (SPIV), fuel droplet scattering, and multi-species chemiluminescence to obtain gas-phase and liquid velocity fields, fuel spray distributions, and heat release rate distributions, respectively. Five experimental campaigns at GRC are planned over the duration of the project, covering various phenomena and conditions. To our knowledge, the resultant data will constitute the most complete experimental information obtained on thermoacoustic instabilities at practical gas turbine conditions._x000D_
_x000D_
These data will be mined to explain the flow/fuel/flame/pressure coupling that sets the thermoacoustic forcing in various situations. For example, we will explain the initial coupling that allows high-amplitude oscillations to grow from noise. We also will explain the coupling driving the final sustained high-amplitude oscillations. These mechanistic insights will be used to construct a reduced order semi-empirical model for the thermoacoustic forcing. Ultimately, the data will be used to understand thermoacoustic instabilities, improve combustor design, and develop best practices for simulating thermoacoustic instabilities using computational_x000D_
fluid dynamics., agreement title english : Thermoacoustic coupling in liquid-fueled dry low emission gas turbine combustors for electrical power generation, agreement title french : Thermoacoustic coupling in liquid-fueled dry low emission gas turbine combustors for electrical power generation, agreement number : CRDPJ, agreement value : 271992.0, agreement start date : 2017-12-13, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2020-2021)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2020-2021)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada