Searched for: author:"Gangoli Rao, A."
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document
Tambe, S.S. (author), Schrijer, F.F.J. (author), Gangoli Rao, A. (author), Veldhuis, L.L.M. (author)
Abstract: Infrared thermography is applied to measure the spiral vortices in the boundary layer over a rotating cone under axial inflow. The data sets are analysed using proper orthogonal decomposition (POD). A criterion based on the signal-to-noise ratio is defined for the selection of relevant POD modes, such that a low-order reconstruction...
journal article 2019
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Tambe, S.S. (author), Schrijer, F.F.J. (author), Gangoli Rao, A. (author), Veldhuis, L.L.M. (author)
Boundary layer instabilities and the formation of coherent spiral vortices over a rotating cone and ellipsoid are studied experimentally. It is found that under a non-axial inflow, the breaking of symmetry in the flow field significantly disturbs the coherence and delays the formation of spiral vortices to higher local Reynolds numbers (Re_l)...
conference paper 2019
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Gangoli Rao, A. (author), van den Oudenalder, F.S.C. (author), Klein, S.A. (author)
The energy scenario is currently undergoing a rapid transition in the pursuit of increasing the share of renewable energy sources in order to reduce the global anthropogenic CO2 emission. However, since several of the renewable energy sources are intermittent in nature, like wind and solar, this intermittency gives rise to several problems in...
journal article 2019
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Augusto Viviani Perpignan, A. (author), Talboom, M.G. (author), Levy, Yeshayahou (author), Gangoli Rao, A. (author)
Since its discovery, the flameless combustion (FC) regime has been a promising alternative to reduce pollutant emissions of gas turbine engines. This combustion mode is characterized by well-distributed reaction zones, which potentially decreases temperature gradients, acoustic oscillations, and NO<sub>x</sub> emissions. Its attainment within...
journal article 2018
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Augusto Viviani Perpignan, A. (author), Tomasello, S.G. (author), Gangoli Rao, A. (author)
abstract 2018
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Yin, F. (author), Tiemstra, Floris S. (author), Gangoli Rao, A. (author)
journal article 2018
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Ang, Andy (author), Gangoli Rao, A. (author), T Kanakis, T. (author), Lammen, Wim (author)
With civil aviation growing at around 4.7% per annum, the environmental footprint of aviation is increasing. Moreover, the use of kerosene as a fuel accelerates the depletion of non-renewable fossil fuels and increases global warming. Hence, the aviation industry has to come up with new technologies to reduce its environmental impact and make...
journal article 2018
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Mahulikar, SP (author), Gangoli Rao, A. (author), Kolhe, Pankaj S. (author)
Low flight altitude missions are a threat due to the combat aircraft’s Infrared (IR) Signature Level (IRSL) as seen by ground-based IR-seeker. The bands in which, the aircraft is susceptible to a typical IR-guided Surface-to-Air Missile are 3-5 m and 8-12 m. The rear fuselage skin contributes substantially to the overall aircraft IRSL...
conference paper 2018
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Augusto Viviani Perpignan, A. (author), Gangoli Rao, A. (author), Roekaerts, D.J.E.M. (author)
Since its discovery, the Flameless Combustion (FC) regime has been seen as a promising alternative combustion technique to reduce pollutant emissions of gas turbine engines. This combustion mode is often characterized by well-distributed reaction zones, which can potentially decrease temperature gradients, acoustic oscillations and,...
review 2018
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Yin, F. (author), Gangoli Rao, A. (author), Bhat, Abhishek (author), Chen, Min (author)
This paper presents the performance assessment of a novel turbofan engine using two energy sources: Liquid Natural Gas (LNG) and kerosene, called Multi-Fuel Hybrid Engine (MFHE). The MFHE is a new engine concept consisting of several novel features, such as a contra-rotating fan to sustain distortion caused by boundary layer ingestion, a...
journal article 2018
document
Gangoli Rao, A. (author)
abstract 2018
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Voskuijl, M. (author), van Bogaert, J. (author), Gangoli Rao, A. (author)
The potential environmental benefits of hybrid electric regional turboprop aircraft in terms of fuel consumption are investigated. Lithium–air batteries are used as energy source in combination with conventional fuel. A validated design and analysis framework is extended with sizing and analysis modules for hybrid electric propulsion system...
journal article 2017
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Yin, F. (author), Gangoli Rao, A. (author)
The historical trends of reduction in fuel consumption and emissions from aero engines have been mainly due to the improvement in the thermal efficiency, propulsive efficiency and combustion technology. The engine Overall Pressure Ratio (OPR) and Turbine Inlet Temperature (TIT) are being increased in the pursuit of increasing the engine thermal...
journal article 2017
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Augusto Viviani Perpignan, A. (author), Talboom, M.G. (author), Gangoli Rao, A. (author)
The Flameless Combustion (FC) regime is promising to the attainment of lower emissions in gas turbine engines. The well-distributed reactions, with low peak temperatures present in the regime result in lower emissions and acoustic oscillations. However, the attainment of the FC regime on gas turbine engines has...
abstract 2017
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Yin, F. (author), Gangoli Rao, A. (author)
This paper presents performance assessment of the proposed hybrid engine concept using Liquid Natural Gas (LNG) and kerosene. The multi-fuel hybrid engine is a new engine concept integrated with contra rotating fans, sequential dual combustion chambers to facilitate “Energy Mix” in aviation and a Cryogenic Bleed Air Cooling System (CBACS). The...
conference paper 2016
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Augusto Viviani Perpignan, A. (author), Gangoli Rao, A. (author)
Alternatives to combustion in aircraft engines are not expected to become feasible in the decades to come. As the aviation traffic increases and regulations become more stringent, reduction in pollutant emissions are needed. The Flameless Combustion (FC) regime has been one of the promising candidates to achieve...
abstract 2016
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Grewe, V. (author), Bock, L. (author), Dahlmann, K. (author), Gierens, K. (author), Hüttenhofer, L. (author), Unterstrasser, S. (author), Gangoli Rao, A. (author), Bhat, A. (author), Yin, F. (author), Reichelt, T.G. (author), Paschereit, O. (author), Levy, Y. (author)
Air traffic is important to our society and guarantees mobility especially for long distances. Air traffic is also contributing to climate warming via emissions of CO2 and various non-CO2 effects, such as contrail-cirrus or increase in ozone concentrations. Here we investigate the climate impact of a future aircraft design, a multi fuel blended...
journal article 2016
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Droste, B. (author), Van Gent, R. (author), Straathof, M. (author), Steenhuizen, D. (author), Kotsonis, M. (author), Geuskens, F. (author), Shroff, S. (author), Guerriero, G. (author), Gangoli Rao, A. (author), Lada, C. (author), Dewanji, D. (author), Yu, H. (author), Schroijen, M. (author), Hoekstra, J. (author), The CleanEra Team (author)
The CleanEra project was initiated with the goal of developing revolutionary ideas for civil aviation. These ideas were to offer solutions which would limit and reduce some of the negative aspects of aviation, namely: emissions and the use of resources. This book presents you with the highlights of this journey in search of new technologies for...
book 2015
Searched for: author:"Gangoli Rao, A."
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