... Abstract A distorted air stream entering an aeroengine fan or compressor leads to harmonic forces on the rotating blades. These aerodynamically induced forces are well known causes for blade vibration and associated fatigue problems. Significant levels of distortion can arise from different...

... Abstract This paper investigates the onset of aeroelastic instability of a modern low-pressure ratio transonic fan using numerical simulations, validated against experimental measurements. Different domain configurations are compared in terms of fan characteristic and radial profiles...

... Abstract This paper reports on the evolution of fan aerodynamics starting with turbofan engines featuring moderate by-pass ratios (between 4 and 6) up to Ultra-High-By-pass-Ratio (UHBR) configurations which are currently being developed. The implementation of key enabling technologies for fan...

... of the Outlet Guide Vane (OGV). ZDES axial compressor fan ingested vortex Proceedings of ASME Turbo Expo 2023 Turbomachinery Technical Conference and Exposition GT2023 June 26-30, 2023, Boston, Massachusetts, USA GT2023-100403 HIGH-FIDELITY SIMULATION OF THE INTERACTION BETWEEN A SIMPLIFIED AXIAL...

... Abstract For the development of low-noise fan designs the sound generation must be reduced at the source, but also sound transmission effects through the rotor can be exploited to reduce the noise emitted to the far-field. Rotor shielding has been identified as a means of noise abatement, where...

... Abstract Centrifugal blowers are commonly used for heating and ventilation applications. Centrifugal fan is a kind of fluid machinery for energy conversion used in industrial engineering with huge energy consumption. The impeller is the core component of a centrifugal fan, and the performance...

... Abstract From the historical point of view, the research on cyclorotors has been focused on aviation applications, such as propulsion systems for UAVs. There is a need for studies on the use of a cycloidal rotor fan (CRF) in internal-flow applications, such as power or HVAC applications...

... Abstract Fans are used in industrial refineries, power generation, petrochemistry, pollution control, etc. These fans can perform in sometimes extreme, mission-critical conditions. The design of fans has historically relied on turbomachinery affinity laws, resulting in oversized machines...

... Abstract One of the main parts of the engine for the regional aircraft, affecting its efficiency and reliability, is the fan blade, which is designed based on aerodynamic and mechanical integrity (MI) optimization and has a complex geometry of the airfoil. At some operating modes...

... by computing the erosion damage using the aforementioned numerical tools. This paper will show the methodology to obtain the database associated to the midspan section of an induced draft fan subjected to erosion due to coal ash particle. The final database is then used to predict the damage state...

... Abstract The paper presents hot wire measurements in a wind tunnel, close downstream of basic models of blade sections being representative for low-speed, low-Reynolds-number axial fans, in order to explore the signatures of vortex shedding (VS) from the blade profiles. Using the Rankine-type...

...-speed fan has been designed for a uniform flow at the inlet using an open source design code with optimization. Numerical analyses of the fan with a uniform flow at the inlet, and one exposed to the distorted non-axisymmetric flow were performed. These required the use of full-annulus unsteady time...

... Abstract A Boundary Layer Ingesting fan is designed to function in a tail cone thruster configuration on an existing aircraft. This means that the fan ingests part of the boundary layer developing over the fuselage all around the circumference. While the fuselage drag induced on the ingested...

... The aerodynamic and acoustic performance of a locomotive cooling module is optimized by a new design strategy for the fan unit. The fan selection or development of the cooling modules is usually based on the specific design point but without consideration of installation effects. The new...

... was developed for simulation of the cooling module in a Diesel locomotive under realistic operational conditions. It includes the components that produce waste heat such as the engine, the turbo transmission, the brake, etc. and the cooling module with its fans. Given the operation of the locomotive e.g...

... A pragmatic and versatile airfoil design and fabrication system, named the Arbitrary Surface Flank Milling (ASFM) system, has been continuously developed and applied to the design and manufacturing of fan and axial compressor airfoils — in the form of integrally bladed rotors (IBR...