... operating temperatures. Therefore, accurate thermal mapping is now more critical than ever for validating new designs, but also very challenging in such a dynamic environment as a gas turbine. A novel advanced offline temperature mapping technology has been developed called thermal history coating (THC...

...Lee Weller; Priyav Shah; Anthony Giles; Francesca De Domenico; Steve Morris; Benjamin A. O. Williams; Simone Hochgreb Laser-Induced Grating Spectroscopy (LIGS) was applied in a high-pressure combustion facility. Instantaneous (sub- μ s), spatially resolved (within 5 mm) measurements of temperature...

...-temperature gradient tests on new-material aero-engine blades, which cannot be achieved through electromagnetic induction. The algorithm, derived from the Monte Carlo method (MCM) and pattern search, can solve the problems of the classical iterative search algorithm by searching lamp parameters and reducing...

...Christopher Zeh; Ole Willers; Thomas Hagemann; Hubert Schwarze; Jörg Seume While turbocharging is a key technology for improving the performance and efficiency of internal combustion engines, the operating behavior of the turbocharger is highly dependent on the rotor temperature distribution...

... fluid/solid boundary i , in addition to the corresponding average wall temperature and the mass flow-averaged temperature of the fluid passing through the plane n . Moreover, the average relative deviation of HTC is determined by the following equation: (9) Δ α ¯ R D...

... the high-pressure compressor, and this cooling air is also used to reduce the ingress. The engine designer needs to predict the stator and rotor temperatures as a function of cooling-flow rate. The sealing effectiveness determines how much air is needed to reduce or prevent ingress; although...

... conversion Gas turbine technology Heat recovery Modeling Power systems Temperature Thermal Thermodynamics Turbines Two-phase Vibration Over the past years, the consumption of fossil fuel continues to grow [ 1 ] due to the increase in energy demand in both heat and electricity forms...

...Clare Bonham; Mark Brend; Adrian Spencer; Katsu Tanimizu; Dylan Wise Steady-state stagnation temperature probes are used during gas turbine engine testing as a means of characterizing turbomachinery component performance. The probes are located in the high-velocity gas-path, where temperature...

...). A three-dimensional computational fluid dynamics (3D CFD) model was developed using CONVERGE CFD coupled with detailed chemical kinetics to gain a better understanding of the underlying phenomena of the water injection event in a homogeneous, low temperature combustion (LTC) strategy. The CFD model...

... react with ammonia (NH 3 ) to form nitrogen and water vapor. The reaction is influenced by several variables, including stored ammonia on the catalyst, exhaust gas composition, and catalyst temperature. Currently, measurements from NO x and/or NH 3 sensors upstream and downstream of the SCR are used...

... by an industrial lean premixed, axial swirl fuel nozzle. Planar particle image velocimetry (PIV) data were analyzed to understand the characteristics of the flow field. Liner surface temperatures were measured in reacting condition with an infrared camera for a single case. Experiments were conducted at Reynolds...

...Masahiro Negami; Shinya Hibino; Akihito Kawano; Yoshimichi Nomura; Ryozo Tanaka; Kenichiroh Igashira Durability of thermal barrier coating (TBC) systems is important because of recent rising of turbine inlet temperature (TIT) for improved efficiency of industrial gas turbine engines. However, high...

.... The piston maximun temperature (PMT) of the dual fuel engine easily exceeds the security border. In view of this, this paper proposes a method based on the lasso regression to estimate the PMT of the dual fuel engine, so as to real-timely monitor the health state of the dual fuel engine. Specifically, PMTs...

... with temperature, the temperature was measured for each data point. Correcting for temperature is a common practice and generally accounts for about 2% change per degree Celsius. A simple experiment was conducted where hot water covering the sensors was allowed to cool to room temperature. Sensor voltage...

... for predicting temperatures and heat transfers for other bearing models. The result of the analysis shows that the predictions of the TN are considerate, despite the simplifications. However, lower relative errors were obtained in the FE model compared to the TN model. For both methods, the highest relative...

... the engineered design of solid–solid and liquid–solid interfaces in dissimilar functionalized materials to establish a paradigm shift toward science from the traditional empiricism in engineering TBCs and high temperature highly loaded bulk materials. An integrated approach of modeling and simulation...

... ] Time-averaged measurements of overall fuel and air flow rates, pressure drop across each of the swirlers, and temperature of the fuel–air mixture at the inlet to the combustor are used to characterize the overall operating state of the experiment. The overall flowrates of air and fuel are measured...

...Ryan O'Donnell; Tommy Powell; Mark Hoffman; Eric Jordan; Zoran Filipi Thermal barrier coatings (TBCs) applied to in-cylinder surfaces of a low temperature combustion (LTC) engine provide an opportunity for enhanced efficiency via two mechanisms: (i) positive impact on thermodynamic cycle efficiency...

..., showed an increased burn duration at higher iEGR levels. When comparing PRF40 to gasoline at fixed combustion phasing and iEGR level, the increased HRR for PRF40 was correlated with reduced intake valve closing (IVC) temperatures. To examine the impact of thermal gradients (as distinct from fuel...

... a temperature gradient across the thickness of a CMC specimen while holding the specimen at its two extremities, which simulates the bending stress that would be observed at the center of a combustor panel. Preliminary validation tests were performed in which A-N720 oxide–oxide CMC specimens were heated...