Evaluation of Low Stress and Cracking Zones in the Core of a High Rockfill Dam in a Relatively Narrow Canyon Using 3D Numerical Modeling

Abstract Traditional methods of estimating package thermal performance employ numerical modeling using commercially available finite-volume or finite-element tools. Use of these tools requires training and experience in thermal modeling. This methodology restricts the ability of die designers to quickly evaluate the thermal impact of their die architecture due to the added throughput time required to enlist the services of a thermal analyst. This paper describes the development of an easy to use spreadsheet tool, which performs quick-turn numerical evaluations of the impact of non-uniform die heating. The tool employs well-established finite-volume numerical techniques to solve the steady-state, three-dimensional Fourier equation of conduction in the package geometry. Minimal input data is required and the inputs are customized using visual basic pull-down menus to assist die designers who may not be thermal experts. Data showing comparison of the estimates from the spreadsheet tool with that obtained from a conventional analysis using the commercially available finite element code ANSYS™ is also presented.

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3D Numerical Modeling for Inductive Processes

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/424/1/012045 ◽

2018 ◽

Vol 424 ◽

pp. 012045

Author(s):

A. Gagnoud ◽

Y. Du Terrail-Couvat ◽

O. Budenkova

Keyword(s):

Numerical Modeling ◽

3D Numerical Modeling

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3D Numerical Modeling of Ultrarelativistic Particle Beams with Crossing Angle

2018 20th International Symposium on High-Current Electronics (ISHCE) ◽

10.1109/ishce.2018.8521191 ◽

2018 ◽

Author(s):

Marina Boronina ◽

Vitaly Vshivkov

Keyword(s):

Numerical Modeling ◽

3D Numerical Modeling ◽

Particle Beams

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Numerical Analysis of Deposits and Corrosion Influence on a Centrifugal Compressor Performance

Volume 9: Micro- and Nano-Systems Engineering and Packaging, Parts A and B ◽

10.1115/imece2012-89456 ◽

2012 ◽

Author(s):

Mohammad R. Aligoodarz ◽

Mohammad Reza Soleimani Tehrani ◽

Hadi Karrabi ◽

Mohammad R. Roshani

Keyword(s):

Numerical Modeling ◽

Centrifugal Compressor ◽

Pressure Ratio ◽

Mechanical Damage ◽

3D Numerical Modeling ◽

Compressor Blades ◽

Turbine Performance ◽

Common Causes ◽

Sst Turbulence Model ◽

Compressor Performance

Turbo machineries including compressors performance degrades over the period of operation and deviates from design levels due to causes including dust entrance into the compressor, blades mechanical damage, erosion and corrosion. These lead to reduction in compressor performance, efficiency and pressure ratio. Subsequently gas turbine performance is affected since their operation sate is correlated. In this study the numerical investigation of common causes that determine geometric characteristics of a 2-stage centrifugal compressor running in a gas station, including blades fouling and corrosion is performed. 3D Numerical modeling is implemented along with utilization of Shear Stress Transport (SST) turbulence model and independency from the grids is verified.

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