Mixed-domain compact modeling framework for fluid flow driven by electrostatic organic actuators

2015 ◽  
Author(s):  
T. K. Maiti ◽  
L. Chen ◽  
H. Miyamoto ◽  
M. Miura-Mattausch ◽  
H. J. Mattausch
Keyword(s):  
Fluid Flow ◽  
Compact Modeling ◽  
Modeling Framework

Compact Modeling of Fluid Flow and Heat Transfer in Straight Fin Heat Sinks

2004 ◽  
Vol 126 (2) ◽  
pp. 247-255 ◽  
Author(s):  
Duckjong Kim ◽  
Sung Jin Kim
Keyword(s):  
Heat Transfer ◽  
Porous Medium ◽  
Fluid Flow ◽  
Pressure Drop ◽  
Heat Sink ◽  
Volume Averaging ◽  
Thermal Design ◽  
Heat Sinks ◽  
Compact Modeling ◽  
Flow And Heat Transfer

In the present work, a compact modeling method based on a volume-averaging technique is presented. Its application to an analysis of fluid flow and heat transfer in straight fin heat sinks is then analyzed. In this study, the straight fin heat sink is modeled as a porous medium through which fluid flows. The volume-averaged momentum and energy equations for developing flow in these heat sinks are obtained using the local volume-averaging method. The permeability and the interstitial heat transfer coefficient required to solve these equations are determined analytically from forced convective flow between infinite parallel plates. To validate the compact model proposed in this paper, three aluminum straight fin heat sinks having a base size of 101.43mm×101.43mm are tested with an inlet velocity ranging from 0.5 m/s to 2 m/s. In the experimental investigation, the heat sink is heated uniformly at the bottom. The resulting pressure drop across the heat sink and the temperature distribution at its bottom are then measured and are compared with those obtained through the porous medium approach. Upon comparison, the porous medium approach is shown to accurately predict the pressure drop and heat transfer characteristics of straight fin heat sinks. In addition, evidence indicates that the entrance effect should be considered in the thermal design of heat sinks when Re Dh/L>∼O10.

Analytical compact modeling framework for the 2D electrostatics in lightly doped double-gate MOSFETs

2012 ◽  
Vol 69 ◽  
pp. 72-84 ◽  
Author(s):  
Mike Schwarz ◽  
Thomas Holtij ◽  
Alexander Kloes ◽  
Benjamín Iñíguez
Keyword(s):  
Compact Modeling ◽  
Double Gate ◽  
Modeling Framework

scholarly journals Compact Modeling Framework v3.0 for high-resolution global ocean–ice–atmosphere models

2018 ◽  
Vol 11 (10) ◽  
pp. 3983-3997 ◽  
Author(s):  
Vladimir V. Kalmykov ◽  
Rashit A. Ibrayev ◽  
Maxim N. Kaurkin ◽  
Konstantin V. Ushakov
Keyword(s):  
Message Passing ◽  
Message Passing Interface ◽  
Global Ocean ◽  
Optimal Interpolation ◽  
Compact Modeling ◽  
Software Environment ◽  
Modeling Framework ◽  
Partitioned Global Address Space ◽  
Version 2.0 ◽  
High Level

Abstract. We present a new version of the Compact Modeling Framework (CMF3.0) developed for the software environment of stand-alone and coupled global geophysical fluid models. The CMF3.0 is designed for use on high- and ultrahigh-resolution models on massively parallel supercomputers.The key features of the previous CMF, version 2.0, are mentioned to reflect progress in our research. In CMF3.0, the message passing interface (MPI) approach with a high-level abstract driver, optimized coupler interpolation and I/O algorithms is replaced with the Partitioned Global Address Space (PGAS) paradigm communications scheme, while the central hub architecture evolves into a set of simultaneously working services. Performance tests for both versions are carried out. As an addition, some information about the parallel realization of the EnOI (Ensemble Optimal Interpolation) data assimilation method and the nesting technology, as program services of the CMF3.0, is presented.

scholarly journals Compact Modeling Framework v3.0 for high-resolution global ocean-ice-atmosphere models

2018 ◽  
Author(s):  
Vladimir V. Kalmykov ◽  
Rashit A. Ibrayev ◽  
Maxim N. Kaurkin ◽  
Konstantin V. Ushakov
Keyword(s):  
High Resolution ◽  
Global Ocean ◽  
Optimal Interpolation ◽  
Compact Modeling ◽  
Software Environment ◽  
Modeling Framework ◽  
Coupled Models ◽  
High Resolution Models ◽  
High Level ◽  
Parallel Supercomputers

Abstract. We present new version of the Compact Modeling Framework (CMF3.0) developed for providing the software environment for stand-alone and coupled models of the Global geophysical fluids. The CMF3.0 designed for implementation high and ultra-high resolution models at massive-parallel supercomputers. The key features of the previous CMF version (2.0) are mentioned for reflecting progress in our researches. In the CMF3.0 pure MPI approach with high-level abstract driver, optimized coupler interpolation and I/O algorithms is replaced with PGAS paradigm communications scheme, while central hub architecture evolves to the set of simultaneously working services. Performance tests for both versions are carried out. As addition a parallel realisation of the EnOI (Ensemble Optimal Interpolation) data assimilation method as program service of CMF3.0 is presented.

A physics-aware compact modeling framework for transistor aging in the entire bias space

2019 ◽  
Author(s):  
Zhicheng Wu ◽  
Dimitri Linten ◽  
Ben Kaczer ◽  
Jacopo Franco ◽  
Philippe J. Roussel ◽  
...  
Keyword(s):  
Compact Modeling ◽  
Modeling Framework ◽  
Transistor Aging

Towards coupling fluid flow and rate-and-state friction in compacting visco-poro-elasto-plastic reservoirs

2020 ◽  
Author(s):  
Mohsen Goudarzi ◽  
Ylona van Dinther ◽  
Meng Li ◽  
René de Borst ◽  
Casper Pranger ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Induced Seismicity ◽  
Large Scale ◽  
Bulk Material ◽  
Frictional Heating ◽  
Fluid Pressure ◽  
Gas Production ◽  
Modeling Framework ◽  
Fully Coupled

<p>Induced seismicity as a result of natural gas production is a major challenge from both an industrial and a societal perspective. The compaction caused by gas production leads to changes of the effective pressure fields in the reservoir and stress redistributions occur particularly in the surrounding faults. In addition, the strong coupling between fluid flow and solid rock deformations and the role of fluid flow regarding the frictional properties of the faults necessitate a coupled and comprehensive modeling framework. A general and fully coupled thermo-hydro-mechanical finite difference formulation is developed herein and the results are verified against numerical benchmarks. A visco-elasto-plastic rheological behavior is assumed for the bulk material and a return-mapping algorithm is implemented for accurate simulation of the stress evolution. The geometrical features of the faults are incorporated into a regularized continuum framework, while the response of the fault zone is governed by a rate-and-state-dependent friction model. Numerical simulations are provided for large-scale problems and their efficiency is assured through the evaluation of the consistently linearized systems of equations along with the use of advanced numerical solvers and parallel computing. Although the proposed framework is a step towards the modeling of earthquake sequences for induced seismicity applications, the features of the numerical model are highlighted for other applications, including seismic events in subduction settings where the role of fluid flow inside the faults is considerable. Another application of the present, fully coupled hydro-thermo-mechanical formulation is the prediction of the fluid pressurization phenomena, where the frictional heating increases the magnitude of the pore fluid pressure inside the faults, and the resultant degradation of dynamic frictional strength is naturally captured. </p>

Multidimensional Model of Fluid Flow and Heat Transfer in Generation-IV Supercritical Water Reactors

2006 ◽  
Author(s):  
Tara Gallaway ◽  
Steven P. Antal ◽  
Michael Z. Podowski
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Supercritical Water ◽  
Three Dimensional ◽  
Future Generation ◽  
Computer Code ◽  
Mechanistic Modeling ◽  
Analytical Models ◽  
Modeling Framework ◽  
Flow And Heat Transfer

This paper is concerned with the mechanistic modeling and theoretical/computational analysis of flow and heat transfer in future Generation-IV Supercritical Water Cooled Reactors (SCWR). The issues discussed in the paper include: the development of analytical models of the properties of supercritical water, and the application of full three-dimensional computational modeling framework to simulate fluid flow and heat transfer in SCWRs. Several results of calculations are shown, including the evaluation of water properties (density, specific heat, thermal conductivity, viscosity, and Prandtl number) near the pseudo-critical temperature for various supercritical pressures, and the CFD predictions using the NPHASE computer code. It is demonstrated that the proposed approach is very promising for future mechanistic analyses of SCWR thermal-hydraulics and safety.

Design and development of the SLAV-INMIO-CICE coupled model for seasonal prediction and climate research

2018 ◽  
Vol 33 (6) ◽  
pp. 333-340 ◽  
Author(s):  
Rostislav Yu. Fadeev ◽  
Konstantin V. Ushakov ◽  
Mikhail A. Tolstykh ◽  
Rashit A. Ibrayev
Keyword(s):  
Coupled Model ◽  
Seasonal Prediction ◽  
Compact Modeling ◽  
Preliminary Evaluation ◽  
Shirshov Institute ◽  
Modeling Framework ◽  
Computational Aspects ◽  
And Performance ◽  
Model Components ◽  
Academy Of Sciences

Abstract SLAV–INMIO–CICE is the coupled atmosphere–ocean–ice model developed at Marchuk Institute of Numerical Mathematics (INM) Russian Academy of Sciences (RAS), Shirshov Institute of Oceanology RAS and Hydrometeorological Centre of Russia (HMCR). The model components are coupled using the new version of the own developed Compact Modeling Framework (CMF). This paper presents design of the coupled model and some computational aspects related to the model components coupling. Preliminary evaluation of the coupled model climate and performance are also given.

Sign in / Sign up

Export Citation Format

Share Document