CENTER OF ENERGY AND FLUID MECHANICS
Laboratory of Combustion
Responsible: Professor Mário Costa
The laboratory of combustion is equipped with facilities to conduct fundamental and applied research. Experimental studies are typically supported by numerical studies using commercial or in-house codes. Key features of the laboratory are the capability to customize gaseous fuels and oxidizers, a broad range of liquid and solid fuels, large accumulated experience in designing injectors/atomizers, burners and reactors, and an infrastructure capable of supporting the operation of prototypes and large-scale equipment.
The existing main facilities are the following:
The flat flame burner is used for the study of initial stages of solid particle combustion, particularly ignition, at a fundamental level. The ambient and temperature that particles are exposed to are controlled by the flame richness. A high-speed camera captures the trajectory of the particles and light emission. Studies are focused on the conditions that affect ignition, ignition mode and model development.
The drop tube furnace is a vertical cylindrical reactor that is used for the characterization of the combustion of solid fuels at a fundamental level. The facility allows studying the conversion process of the particle along its axis at different temperature and ambient conditions by measuring temperature and species concentration, and analyzing the chemical and physical characteristics of collected particles. Studies are typically focused on combustion kinetics, particle fragmentation, ash behavior, and kinetic model development and validation.
The small-scale pellets boiler is used for the characterization of pelletized biomass combustion at both fundamental and applied level. The facility allows studying the combustion process inside the combustion chamber and the characterization of exhaust emissions by measuring temperature and species concentration, and analyzing the chemical and physical characteristics of collected particles. Studies are typically focused on particulate matter formation and emissions, primary measurements for pollutant emission reduction and ash handling.
The large-scale furnace emulates combustion conditions typical of power plants; specifically intense turbulence and heat transfer by radiation. Gaseous, liquid and solid fuels can be used in single or co-fired mode. The combustion is characterized by in-flame measurements of temperature and species concentration, and analyzing the chemical and physical characteristics of collected particles. Typically, CFD simulations compliment experimental diagnostics. Studies are focused on operational, combustion and emissions characteristics.
The study of flameless combustion is conducted at both fundamental and applied level using different laboratory reactors and several camera models with different geometries for turbine applications. Different types of diagnostics, including non-intrusive, are used to characterize species and temperature distribution and the flow structure. Typically, numerical studies compliment experimental diagnostics. Studies focus on regime transition, fuel and oxidizer composition and GHG footprint.
Laboratory of Flow Physics and Simulation
Responsible: Professor José Carlos Pereira
The Laboratory of Flow Physics and Simulation promotes education and research activities in the areas of turbulence physics and uncertainty quantification for Msc and PhD students and Pos-Docs, allowing them to carry out advanced research work at any stage of their careers.
The laboratories are equipped to conduct both cutting edge fundamental research & industrial (applied) research. The laboratories benefit from strong national and international links between research staff and numerous research groups and laboratories around the world.
The main facilities are the following:
Laboratory of Microfluidics and Biomicrofluidics
Responsible: Professor Viriato Semião
The Laboratory of Microfluidics and Biomicrofluidics promotes education and research activities in microfluidics aiming at characterizing biological fluid (blood) flows in vitro at the microscale and non-biological fluid flows in microdevices.
Besides the main facilities described below, there are also in the laboratory syringe pumps, pressure micro-sensors, cold-light sources, a spin-coater, a UV LED exposure system, a plasma corona system.
The main facilities in this laboratory are:
Vehicle and Propulsion Laboratory
Responsible: Professor Tiago Farias e Dr. Gonçalo Gonçalves
The VP-Lab is dedicated to the analysis of vehicles and propulsion systems, focusing on dynamics, energy use and pollutant emissions, and has a mobile and a fixed component.
The mobile component of VP-Lab is designed to be installed in any vehicle and monitor, on the road and during regular operation, the dynamic, energy and environmental characteristics of vehicles such as o bicycles, light duty vehicles or heavy duty vehicles. It has the following components:
The fixed component includes an engine test bed that allows measuring Power, rpm, fuel use intake air flow, intake and exhaust temperatures and exhaust gas composition. The test bed can operate with a single cylinder water cooled multifuel gasoline engine or a single cylinder direct injection air cooled Diesel engine.
Multiple demonstration engines (2/4 stroke, air cooled, liquid cooled) and components are also available for demonstrations and teaching purposes.