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1-20 of 321
Keywords: CFD
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Proceedings Papers
Unsteady Flow Structure of Rotating Instability in a 1.5-Stage Axial Compressor
Available to Purchase
Proc. ASME. GT2024, Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V12DT36A004, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-122609
... 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...
Proceedings Papers
CFD Study of Journal Bearing Flow Physics and the Influence of Oil Feed Condition Within a Planetary Gearbox
Available to Purchase
Proc. ASME. GT2024, Volume 12C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V12CT32A048, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128783
... 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...
Proceedings Papers
Simulation of Full Featured Compressor Using Massive Parallel Unsteady CFD
Available to Purchase
Proc. ASME. GT2024, Volume 12C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V12CT32A020, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124877
... 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...
Proceedings Papers
Applicability of Volume of Fluid Method to Two-Phase Flow Turbomachinery Application
Available to Purchase
Proc. ASME. GT2024, Volume 12C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V12CT32A005, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121558
... 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...
Proceedings Papers
Prediction of Steady and Unsteady Flow Quantities Using Multiscale Graph Neural Networks
Available to Purchase
Proc. ASME. GT2024, Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V12DT34A003, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121697
... 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...
Proceedings Papers
NASA HECC Geometry and Performance Review Part 1: Validation of a Computational Model for the Vaneless Diffuser Configuration With As-Manufactured Impeller Geometry
Available to PurchaseGregorio Robles Vega, Alec J. Bosshart, Michael Ni, Ron-Ho Ni, Herbert M. Harrison, Tammy Nguyen-Huynh
Proc. ASME. GT2024, Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V12DT35A011, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125128
... 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...
Proceedings Papers
Unsteady Flow Development and Reynolds Stress Measurements in a Centrifugal Compressor Vaned Diffuser
Open Access
Proc. ASME. GT2024, Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V12DT35A015, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125827
... 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...
Proceedings Papers
Analysis of the Flow-Field Distortions Induced by Pneumatic Pressure Probes in Test Bench Experiments on Centrifugal Compressors: Are We Testing Right?
Available to PurchaseAlberto Baroni, Luca Romani, Francesco Balduzzi, Lorenzo Toni, Angelo Grimaldi, Elisabetta Belardini, Davide Biliotti, Alessandro Bianchini, Giovanni Ferrara
Proc. ASME. GT2024, Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V12DT35A008, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124021
..., 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...
Proceedings Papers
Edwin Joseph Munoz Lopez, Alexander Hergt, Joachim Klinner, Bjoern F. Klose, Chris Willert, Volker Gümmer
Proc. ASME. GT2024, Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V12DT36A019, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128197
... 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...
Proceedings Papers
Development of Transonic Centrifugal Compressor With an Inducer Casing Bleed System
Available to Purchase
Proc. ASME. GT2024, Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V12DT35A028, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129310
... 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...
Topics:
Compressors
Proceedings Papers
Design Guidelines for Arrays of Closely Spaced Darrieus Turbines
Available to PurchaseOmar Sherif Mohamed, Pier Francesco Melani, Giuseppe Soraperra, Alessandra Brighenti, Francesco Balduzzi, Alessandro Bianchini
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T37A006, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121978
... 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...
Proceedings Papers
TPMS Turbojet Precooler Design Methodology and Case Study
Available to Purchase
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T13A009, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-122645
... 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 Papers
A CFD Study on the Performance of Modified H-Shaped VAWTs for Tilted Operation Condition
Available to Purchase
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T37A009, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124830
...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...
Proceedings Papers
Investigating the Performance of Multi Element Wind Lens
Available to Purchase
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T37A016, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128215
... 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...
Proceedings Papers
Transient Simulation and Characterization of Conjugate Heat Transfer at Hydro Generator Polewindings
Available to Purchase
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T13A001, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-120895
... 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...
Proceedings Papers
Numerical Analysis of Convective Heat Transfer Processes and Performance Assessment of Lattice and Triply Periodic Minimal Surface Geometries
Available to Purchase
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T13A041, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129097
.... 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...
Proceedings Papers
Assessing the Environmental Impact of Aircraft / Engine Integration With Respect to Contrails
Available to Purchase
Proc. ASME. GT2024, Volume 1: Aircraft Engine, V001T01A031, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124447
... 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...
Proceedings Papers
Flow Analysis of Various Intake Configurations of an Unmanned Aircraft Considering External Flow and Different Flight Conditions
Available to Purchase
Proc. ASME. GT2024, Volume 1: Aircraft Engine, V001T01A030, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124210
... 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...
Proceedings Papers
Numerical and Experimental Investigation of Steady Flow Distortion in Drooped Turbofan Intakes
Available to Purchase
Proc. ASME. GT2024, Volume 1: Aircraft Engine, V001T01A032, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124697
... 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...
Proceedings Papers
Shear-Driven Hydrogen-Air Mixing in OP16 DLE Combustor: A Comparative Study Between URANS and LES
Available to Purchase
Proc. ASME. GT2024, Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels, V002T03A011, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-123831
... 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...
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