.... This work presents a vibro-acoustic experimental investigation on a centrifugal compressor of an automotive turbocharger aimed to identify and confirm some surge precursor values in correspondence of its inception conditions. The experimental campaign was carried out at the University of Genoa and developed...

... and guaranteeing safe operation. For this reason, it is necessary to develop a monitoring system capable of preventing surge and extending the operating range of these machines, their performance, and reliability to allow the integration with the other plant components. The experimental investigation carried out...

... , C. , Meier , W. , and Aigner , M. , 2011 , “ Experimental Analysis of Confined Jet Flame by Laser Measurement Techniques ,” ASME Paper No. GT2011-45111. 10.1115/GT2011-45111 [7] Zornek , T. , Monz , T. , and Aigner , M. , 2013 , “ Experimentelle...

... as it directly modifies viscosity and clearances of the fluid film bearings. Since a direct experimental identification of the rotor temperature of an automotive turbocharger is not feasible at an acceptable expense, a combination of numerical analysis and experimental identification is applied to investigate...

...Carlo Alberto Niccolini Marmont Du Haut Champ; Paolo Silvestri; Mario Luigi Ferrari; Aristide Fausto Massardo This paper shows signal processing techniques applied to experimental data obtained from a T100 microturbine connected with different volume sizes. This experimental activity was conducted...

... of RGF (within 10% error at lower engine speeds) are measured for both operating modes suggesting that skip firing is an appropriate experimental method for determining RGF at higher engine speeds. It is important to remember that any instrument error may be compounded (or mitigated) when calculating RGF...

... pressure. Consequently, both performance characteristics and structural reliability of swirl breaker were verified for application to real steam turbines. aerodynamics computational fluid dynamics experimental fluids power systems steam turbines One of the main applications of steam...

... aerodynamic loss due to mixing with the mainstream flow. In order to reduce this mixing loss, two distinct ideas for rotor shroud exit cavity geometries were investigated using computational fluid dynamics (CFD) analyses and experimental tests. One idea was an axial fin placed from the shroud downstream...

.... This plot is shifted by a temperature difference until it matches the experimental results of the Premixed case for flame temperatures above 1750 K. This temperature shift ( Δ T Loss ) accounts for the inherent heat loss of the steel combustion chamber. The unchanged and shifted equilibrium CO...

...Andrew J. Provenza; Kirsten P. Duffy; Milind A. Bakhle Boundary layer ingestion (BLI) is a propulsion technology being investigated at NASA by the Advanced Aircraft Transportation Technology (AATT) Program to facilitate a substantial reduction in aircraft fuel burn. In an attempt to experimentally...

... segment of the turbine inlet. Each transition duct is open on the sides toward the adjacent transition ducts, so that neighboring cans are acoustically connected through a so-called cross-talk open area. This theoretical, numerical, and experimental work discusses the effect that this communication has...

... Using DNS and Experimental Data ,” J. Turbul. , 17 ( 6 ), pp. 602 – 632 . 10.1080/14685248.2016.1153106 [10] Foley , C. W. , Chterev , I. , Seitzman , J. , and Lieuwen , T. , 2016 , “ High Resolution Particle Image Velocimetry and CH-PLIF Measurements and Analysis of a Shear...

.... The reductions in the leakage significantly exceed the uncertainties of the CFD model and the test rig accuracy. The factors that had the most substantial impact on the leakage reduction were the location, inclination, and thickness of the fins. The experimental results were compared with the calculations...

... of the trade-offs for each pollutant. This paper will focus on the details of NO x formation for high substitution DF engines. Experimental results have demonstrated that NO x emission trends (as a function of lambda) for DF engines differ from both traditional diesel engines and lean burn natural gas (NG...

... OURNAL OF E NGINEERING FOR G AS T URBINES AND P OWER . Manuscript received March 25, 2018; final manuscript received April 20, 2018; published online August 6, 2018. Editor: David Wisler. 25 03 2018 20 04 2018 Combustors Experimental Flame Modeling Thermoacoustics...

... systems Engines Experimental Finite element Internal combustion engines Modeling Power Thermal Turbines Control systems Co- generation Hybridized and fully electrified boosting technologies have become increasingly popular in recent years. Engine-boosting provides advantages in terms...

... . Manuscript received June 16, 2017; final manuscript received February 19, 2018; published online July 31, 2018. Assoc. Editor: Riccardo Da Soghe. 16 06 2017 19 02 2018 Aerodynamics Computational fluid dynamics Design optimization Experimental Turbines Fig. 27 Comparison...

...Martin L. Wissink; Scott J. Curran; Chaitanya Kavuri; Sage L. Kokjohn Experimental work on reactivity-controlled compression ignition (RCCI) in a small-bore, multicylinder engine operating on premixed iso-octane, and direct-injected n-heptane has shown an unexpected combustion phasing advance...

... of the SOFC, transient operations, using the different piping paths, are investigated. Concepts for heating up and cooling the SOFC using hot air from the recuperator and relatively cold air from the compressor outlet are experimentally tested and characterized. Selected critical situations and their effect...

.... [ 14 ] showed that higher external Mach numbers resulted in more ingestion. In regard to the topic of hot gas ingestion, Green and Turner [ 15 ] stated that “oversimplified experimental rigs operated far from engine conditions may often only serve to confuse the issue…. Before design rules can...