... in flow rate and thus the increase in the number of RI disturbances. axial compressor rotating instability stall inception rotating stall CFD DES Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024, London, United Kingdom GT2024...

... bearing which has a static inner, and a rotating outer cylinder, as well as its axis rotating around a centre axis. A full three-dimensional CFD is performed which includes centrifugal force, thermal conduction to the metal parts, two-phase flow (air/oil), cavitation from oil to oil-vapor, as well...

... Abstract A major benefit of using CFD in compressor design is reduction of test runs, which speeds up the design process and minimizes costs. This work presents the next step in achieving such a goal. Unsteady simulations of a high-fidelity full annulus compressor rig model with more than 5...

... of the key parameters and determine an appropriate CFD model. With the proper numerical setup, the CFD results are in good agreement with the test rig. The numerical setup is further applied to a common use case of air-oil two-phase flows of turbomachinery, namely the oil drain. The CFD model of the oil...

... Abstract Analysis, optimization and uncertainty quantification of the aerodynamic behaviour of turbomachinery components is a fundamental part of the current industrial design process and requires the extensive use of compute-intensive CFD simulations. In this paper we investigate whether graph...

... the model was deemed validated and was used in the latter two parts of the multipart investigation. centrifugal compressor experiment CFD Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024, London, United Kingdom GT2024-125128 NASA HECC...

... tensor were also determined at multiple locations in the diffuser flow field. These data are used to study the jet and wake propagation from the impeller exit flow field into the diffuser passage and the resulting secondary flow structures. Predictions from unsteady CFD simulations using the SST and BSL...

..., accurate 3D CFD simulations of the entire stage were carried out including the actual geometry of the probes for two probes configurations and three operating points. Simulations highlighted the effect probes’ wakes on downstream vanes and the induced blockage effect, which both appear in line...

... is provided on which to further study the underlying mechanisms of unsteady flows in transonic cascades. compressors SBLI unsteady experimental PIV CFD LES Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024, London, United Kingdom...

... diffuser is responsible for the entire range of operation. transonic centrifugal compressor testing CFD Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024, London, United Kingdom GT2024-129310 DEVELOPMENT OF TRANSONIC CENTRIFUGAL...

... turbines within the array. The identified efficiency improvement pattern suggests that maximizing leeward mutual interactions within an array of multiple Darrieus turbines would enhance the overall efficiency of the setup. VAWTs multi-rotors hydrokinetic turbines CFD turbine arrays Proceedings...

... loss and heat-transfer correlations appear to be geometry-specific and a precooler design methodology is not apparent. Parametric steady-RANS CFD studies that employed the SST turbulence model with a zero-thickness shell interface were conducted on 50-50 and 80-20 volume ratio cross-flow gyroid...

...Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024, London, United Kingdom GT2024-124830 A CFD STUDY ON THE PERFORMANCE OF MODIFIED H-SHAPED VAWTS FOR TILTED OPERATION CONDITION Otman Kouaissah1, Nicoletta Frachina1 Giacomo Persico2...

... with the wind lens where a second rotor is placed at the exit section of the lens. The performance of the new design was examined using CFD technique via the commercial software ANSYS FLUENT. The study investigated the tilt angle of the front piece, the tilt angle of the back piece as well as the gap between...

... at the windings is highlighted yielding new fundamental insights into the local heat transfer mechanisms in hydro generators. CFD cooling electrical generator heat transfer thermal unsteady Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024...

.... This study examines various lattice and TPMS structures, like Gyroid, Diamond, and BCC, alongside conventional channels and pin fins. Using steady-state CFD, it analyses pressure drop and heat transfer covering Reynolds numbers from 10,000 to 40,000, representative of gas turbine cooling applications...

... microphysics module has been developed and integrated within Rolls-Royce in-house Hydra CFD code. Three-dimensional Reynolds-Averaged Navier-Stokes simulations are conducted over the jet and early vortex regime, covering an area which is often simplified in most contrail modelling approaches. It is found...

... CFX flow solver. Initial low-fidelity simulations were done using the EMSS to calculate the flight conditions and, therefore, the boundary conditions for the CFD setup. The study reveals that the external flow significantly influences the flow inhomogeneities in the intake and, therefore, cannot...

... computational fluid dynamics (CFD). Secondly, the generation mechanism of steady-state distortion will be briefly discussed. Finally, this study designs fan experiments under static inlet conditions. The experiments are conducted on an aspirated fan test rig, and total pressure and static pressure measurements...

... Abstract This paper presents numerical predictions of the flow field in the swirl-stabilized OP16 DLE combustor using hydrogen as a fuel. Computational Fluid Dynamics (CFD) simulations employing unsteady Reynolds-Averaged Navier-Stokes (URANS) and Wall Modelled Large Eddy Simulations (WMLES...