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Proceedings Papers

Proc. ASME. GT2021, Volume 5A: Heat Transfer — Combustors; Film Cooling, V05AT11A005, June 7–11, 2021
Paper No: GT2021-59687
... adjacent to a cooling hole. The temperature profile is compared to a CFD-CHT model and thermocouple measurements for the calibration of cooling pre-design methods. temperature CFD thermocouples gas turbine combustor cooling sensors Proceedings of ASME Turbo Expo 2021 Turbomachinery...
Proceedings Papers

Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT13A010, June 7–11, 2021
Paper No: GT2021-59603
..., the exploitation of numerical approaches to improve their design is hindered by the lack of dedicated correlations and CFD models developed for such high roughness conditions. Usually the additive manufactured components are simulated considering the surfaces as smooth or applying an equivalent sand-grain...
Proceedings Papers

Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT13A012, June 7–11, 2021
Paper No: GT2021-59658
... of propellant. This paper presents an investigation about the capabilities of currently available CFD models for boiling to reproduce correctly the phenomenon under various flow conditions. The analysis, conducted with Ansys Fluent CFD solver, focuses on the Eulerian multiphase approach coupled...
Proceedings Papers

Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT13A005, June 7–11, 2021
Paper No: GT2021-58921
... surface Nusselt number (Nu) which increased by 3 times. falling film evaporators porous media porosity CFD heat transfer Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-58921 STUDYING THE EFFECT OF POROSITY...
Proceedings Papers

Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT14A002, June 7–11, 2021
Paper No: GT2021-58822
... the mechanisms of these unsteady flow structures and how they influence the hot gas ingestion and sealing efficiency. A two-sector axial rim seal model is used to carry out the numerical investigation. The simulation is performed using the URANS method by the commercial CFD code ANSYS CFX, in which the SST...
Proceedings Papers

Proc. ASME. GT2021, Volume 2B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V02BT32A013, June 7–11, 2021
Paper No: GT2021-59897
... of a single blade passage with periodic boundary conditions. The Reynolds-Averaged Navier-Stokes equations with the k-ω shear stress transport (SST) turbulence equations were solved in a commercial CFD code Ansys CFX 18.1. The flow was considered incompressible. The present numerical study was compared...
Proceedings Papers

Proc. ASME. GT2021, Volume 2B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V02BT32A008, June 7–11, 2021
Paper No: GT2021-59224
...Abstract Abstract This paper presents experimental and numerical CFD studies of the aerodynamics of a turbine rear structure (TRS). The TRS test geometry is an engine-realistic state-of-the-art design with a polygonal outer case, recessed engine mount bumps, and three different vane types...
Proceedings Papers

Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT34A036, June 7–11, 2021
Paper No: GT2021-59867
... then was confirmed via RANS CFD simulations of the flow field inside the inlet suction housing and pump impeller. Same CFD methodology was used to evaluate multiple engineering solutions to reduce the strength of the inflow pre-swirl by modifying the inlet suction housing geometry. The obtained RANS CFD solutions...
Proceedings Papers

Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT35A004, June 7–11, 2021
Paper No: GT2021-58739
... duct was used. The steady RF blade passing frequency / Hz computational fluid dynamics (CFD) showed that the inlet duct BPF computational fluid dynamics has little effect on the aerodynamic performance of the fan. The CFD proper orthogonal decomposition results of the full passage unsteady calculation...
Proceedings Papers

Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT34A022, June 7–11, 2021
Paper No: GT2021-59414
... applied in Computational Fluid Dynamics imposed at different surfaces are explained in the work. The (CFD) techniques in the turbomachinery area, in this case, in an boundary conditions settings follow the same rule used in the test facility and needs some attention during the simulations to vary axial...
Proceedings Papers

Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT34A032, June 7–11, 2021
Paper No: GT2021-59616
... the maximum torque by 20% compared to the baseline nozzle. aerodynamic optimization nozzle vane VGT CFD radial turbine turbocharger Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-59616 AERODYNAMIC DESIGN...
Proceedings Papers

Proc. ASME. GT2021, Volume 2D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V02DT39A010, June 7–11, 2021
Paper No: GT2021-59869
... further Rotating Stall, CFD, DES technological improvements. NOMENCLATURE Researchers have reported the behavior of rotating stalls B diffuser passage height [m] generated in vaneless space. In an early report, Senoo et al. D diameter [m] investigated the boundary separation pattern of a vaneless G mass...
Proceedings Papers

Proc. ASME. GT2021, Volume 2D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V02DT39A014, June 7–11, 2021
Paper No: GT2021-60276
... unsteady modalities is pervasive and detailed analysis. near the top of the priority list. Regarding aerodynamics and CFD simulation, a topology of unsteady mechanisms which Keywords: CFD, Unsteady, Heat transfer, harmonic influence the blade/vane heat transfer could begin with the balance pulsating nature...
Proceedings Papers

Proc. ASME. GT2021, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Wind Energy; Scholar Lecture, V001T10A002, June 7–11, 2021
Paper No: GT2021-58728
... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-58728 STUDY OF CFD-BASED RAISED-FLOOR DATA CENTER COOLING WITH PARAMETRIC CRAC TURBOFAN BLOWER AIRFLOW PATTERNS Zhihang Song Wan Chen Northeastern University...
Proceedings Papers

Proc. ASME. GT2021, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Wind Energy; Scholar Lecture, V001T10A004, June 7–11, 2021
Paper No: GT2021-58967
... historically relied on turbomachinery Dia. Impeller diameter affinity laws, resulting in oversized machines that are expensive to manufacture and transport. DOE Design of experiments With the increasingly lower CPU cost of fluid modeling, Hsg Housing designers can now turn to CFD optimization to produce...
Proceedings Papers

Proc. ASME. GT2021, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Wind Energy; Scholar Lecture, V001T10A011, June 7–11, 2021
Paper No: GT2021-59832
... determine a progressive reduction in wall thickness of specific fan zones, which may m mass finally result in the formation of holes. This, in turn, makes the internal flow field changing, affecting contaminant trajectories n velocity exponent and impact characteristics. CFD predictions show that erosion...
Proceedings Papers

Proc. ASME. GT2021, Volume 2A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V02AT31A044, June 7–11, 2021
Paper No: GT2021-60314
... grooves, compressor stall, CFD orientations relative to the groove. Interactions of the tip flow with the ACGs modifies the magnitude and spatial distribution NOMENCLATURE rotor blade tip chord of the highly anisotropic and inhomogeneous turbulence in the c= passage. Owing to TLV entrainment...
Proceedings Papers

Proc. ASME. GT2021, Volume 8: Oil and Gas Applications; Steam Turbine, V008T22A016, June 7–11, 2021
Paper No: GT2021-59645
... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-59645 TWO PHASE FLOW CFD MODELING OF A STEAM TURBINE LOW PRESSURE SECTION: COMPARISON WITH DATA AND CORRELATIONS Nicola Maceli1, Lorenzo Arcangeli1, Andrea Arnone2...
Proceedings Papers

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT23A008, June 7–11, 2021
Paper No: GT2021-59040
... presents a parametric method for annular combustor staging patterns profile generation intended for use for forced response predictions from a limited number of combustor CFD calculations while keeping the key phenomenological features. Two cases with burner staging turbine inlet temperature distributions...
Proceedings Papers

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A009, June 7–11, 2021
Paper No: GT2021-58893
... with increasing power output and improving performance by decreasing leakage flow. In order to understand detailed characteristics of this destabilization fluid force, so many CFD calculations have been performed and unsteady pressure measurements have been conducted using rotational test rig. However, CFD...