... dynamics Aerospace Propulsion systems Flow induced noise There are a number of computational studies which show that boundary layer ingesting propulsion systems can significantly reduce the fuel burn of an aircraft [ 1 – 6 ]. The potential benefits of boundary layer ingestion (BLI) (on the order...

... Flow induced noise Combustion Can-annular combustors are common in heavy-duty land based gas turbines. In this design, the air flows from the compressor outlet to the combustor plenum. From there, the air stream splits into N cans. Each can consists of a first approximation of a cylinder...

.... Such a PDF can be obtained by solving the Fokker–Planck equation (FPE), also known as Kolmogorov forward equation [ 1 ]. The FPE of a system is generated by its stochastic differential equation (SDE). Flow induced vibration Vibration Flow induced noise Copyright © 2019 by ASME 2019 0742...

... to be obtained. Manuscript received June 22, 2018; final manuscript received June 25, 2018; published online September 14, 2018. Editor: Jerzy T. Sawicki. 22 06 2018 25 06 2018 Flow induced vibration Modeling Structural dynamics Vibration Flow induced noise The current...

... component, axial component, and torsion moment. The blade vibration responses induced by NECFE are increased by 11.66% and 19.94% in tangential and axial. Condensation Flow induced vibration Multiphase flows Nuclear Phase change Structural dynamics Unsteady Flow induced noise Nuclear...

.... A discussion on the possible sources of this SSV including self-excited instability and pad flutter forced vibration is provided with supporting evidence from thermoelastohydrodynamic (TEHD) bearing modeling results. Experimental Flow induced vibration Fluids Modeling Flow induced noise Many...

... Thermoacoustics Unsteady flows Wave propagation Flow induced noise Increased aircraft operations combined with urban densification around airports lead to the definition of more and more severe environmental regulations [ 1 ]. As the dominant noise sources for an aircraft engine, jet and fan noise...

... , 105 , pp. 1751 – 1756 . 10.1016/j.egypro.2017.03.503 Acoustic emission Aerospace Experimental Flow induced vibration Gas turbine technology Measurement techniques Sensors Thermodynamics Propulsion systems Flow induced noise Nowadays, unstable compressor behavior is not yet...

..., Charlottesville, VA. http://downloads.hindawi.com/journals/ijrm/1998/540124.pdf 26 09 2017 27 10 2017 Computational fluid dynamics Flow induced vibration Internal flow Swirling Vibration Flow induced noise Labyrinth seals are noncontacting seals used in various turbomachines...

.../1.4004130 Experimental Film Flow induced vibration Fluids Measurement techniques Modeling Structural dynamics Vibration Flow induced noise Bulkflow and computational fluid dynamics (CFD) methods are typically used to obtain the static and dynamic properties of seals. The development...

.... 08 02 2017 21 07 2017 Aerodynamics Computational fluid dynamics Flow induced vibration Fuel combustion Thermoacoustics Flow induced noise A well-known problem of lean premixed combustion of natural gas in gas turbine combustors is the sensitivity to thermoacoustic...

... Unsteady flows Flow induced noise The most important objectives in the development of low-speed axial fans for cooling applications are high efficiency and low noise emissions. While a wide design space would help the developer to fulfill these targets, the fan geometry is mainly driven...

... manuscript received August 1, 2017; published online November 7, 2017. Editor: David Wisler. 23 07 2017 01 08 2017 Flow induced vibration Flow induced vibration Flow induced noise Flow induced noise Annular gas seals are widely used in compressors, turbines, and pumps...

... Aerodynamics Finite element methods Finned surfaces Flow induced vibration Fluid control systems Flow induced noise Industrial and tunnel ventilation fans can work in environments that can entail unsteady and distorted inflow conditions. These installation effects lead the fan to work...

... in the J OURNAL OF E NGINEERING FOR G AS T URBINES AND P OWER . Manuscript received July 4, 2017; final manuscript received July 26, 2017; published online October 17, 2017. Editor: David Wisler. 04 07 2017 26 07 2017 Computational Flow induced vibration Modeling Flow induced...

... – 662 . 10.1115/1.1776588 Computational mechanics Flow induced vibration Modeling Periodic Turbines Vibration Flow induced noise Gas-turbine engine structures are, as a rule, assembled jointed structures. The nonlinear interactions occur at the contact interfaces of these joints...

... emission Computational Flow induced vibration Flow induced noise The understanding and mitigation of noise generation in axial turbomachinery has made considerable advances in the past decades. This was driven to a great extent by the advent of modern jet engines and the ensuing regulatory...

... Thermoacoustics Flow induced noise Combustion instabilities in practical systems are very difficult to predict and suppress, and they constitute a major difficulty for the development of modern gas turbine combustors. They are often the main obstacle when one tries to improve the emission performance...

... 2016 Acoustic emission Experimental Flow induced vibration Gas turbine technology Turbulence Flow induced noise The rising cost of jet fuel along with other environmental concerns has renewed interest in open rotor propulsion systems. These systems, also known as propfans...

...., directly. 21 06 2016 07 07 2016 Computational fluid dynamics Flow induced vibration Structural dynamics Turbines Unsteady flows Flow induced noise Steam turbine inlet valves are used to control the mass flow rate in steam turbine installations by throttling the flow...