scholarly journals Use of ARM Data to address the Climate Change Further Development and Applications of A Multi-scale Modeling Framework

2007 ◽  
Author(s):  
David A Randall ◽  
Marat Khairoutdinov
Keyword(s):  
Climate Change ◽  
Modeling Framework ◽  
Multi Scale ◽  
Scale Modeling ◽  
Multi Scale Modeling ◽  
Further Development

A novel synergistic multi-scale modeling framework to predict micro- and meso-scale damage behaviors of 2D triaxially braided composite

2021 ◽  
pp. 105678952110339
Author(s):  
Hongyong Jiang ◽  
Yiru Ren ◽  
Qiduo Jin
Keyword(s):  
Compressive Load ◽  
Scale Model ◽  
Modeling Framework ◽  
Braided Composite ◽  
Multi Scale ◽  
Scale Modeling ◽  
Bridge Model ◽  
Multi Scale Modeling ◽  
Transverse Damage ◽  
Meso Scale

A novel synergistic multi-scale modeling framework with a coupling of micro- and meso-scale is proposed to predict damage behaviors of 2D-triaxially braided composite (2DTBC). Based on the Bridge model, the internal stress and micro damage of constituent materials are respectively coupled with the stress and damage of tow. The initial effective elastic properties of tow (IEEP) used as the predefined data are estimated by micro-mechanics models. Due to in-situ effects, stress concentration factor (SCF) is considered in the micro matrix, exhibiting progressive damage accumulation. Comparisons of IEEP and strengths between the Bridge and Chamis’ theory are conducted to validate the values of IEEP and SCF. Based on the representative volume element (RVE), the macro properties and damage modes of 2DTBC are predicted to be consistent with available experiments and meso-scale simulation. Both axial and transverse damage mechanisms of 2DTBC under tensile or compressive load are revealed. Micro fiber and matrix damage accumulations have significant effects on the meso-scale axial and transverse damage of tows due to multi-scale coupling effects. Different from existing meso-/multi-scale models, the proposed multi-scale model can capture a crucial phenomenon that the transverse damage of tow is vulnerable to micro fiber fracture. The proposed multi-scale framework provides a robust tool for future systematic studies on constituent materials level to larger-scale aeronautical materials.

scholarly journals A Generic Multi-scale Modeling Framework for Reactive Observing Systems: An Overview

2006 ◽  
pp. 514-521 ◽  
Author(s):  
Leana Golubchik ◽  
David Caron ◽  
Abhimanyu Das ◽  
Amit Dhariwal ◽  
Ramesh Govindan ◽  
...  
Keyword(s):  
Modeling Framework ◽  
Multi Scale ◽  
Scale Modeling ◽  
Multi Scale Modeling ◽  
Observing Systems

scholarly journals Evaluating Precipitation Features and Rainfall Characteristics in a Multi‐Scale Modeling Framework

2020 ◽  
Vol 12 (8) ◽  
Author(s):  
Jiun‐Dar Chern ◽  
Wei‐Kuo Tao ◽  
Stephen E. Lang ◽  
Xiaowen Li ◽  
Toshihisa Matsui
Keyword(s):  
Modeling Framework ◽  
Rainfall Characteristics ◽  
Multi Scale ◽  
Scale Modeling ◽  
Multi Scale Modeling

Degradation of Metal-Supported SOFC and One Powerful Investigation Method: Multi-Scale Modeling and Simulation

2011 ◽  
Vol 110-116 ◽  
pp. 3376-3381
Author(s):  
Qiu An Huang ◽  
Su Zhen Mei ◽  
Ling Fang Xu ◽  
Wei Ming Yang
Keyword(s):  
Modeling And Simulation ◽  
Degradation Mechanism ◽  
Multi Scale ◽  
Scale Modeling ◽  
Scale Models ◽  
Research Procedure ◽  
Multi Scale Modeling ◽  
Further Development ◽  
Substrate Anode ◽  
Iron Chromium

Metal-supported solid oxide fuel cell (SOFC) has a varieties of potential advantages compared to the traditional ceramic supported SOFC. However, degradation issue of metal-supported SOFC is seriously impeding its further development, in particular, the inter-diffusion and interaction of iron, chromium and nickel at substrate/anode interface is known to be a key issue responsible for cell rapid degradation. With respect to the complexity and nonlinearity of degradation mechanism, multi-scale modeling and simulation is regarded as one powerful method to gain a deep insight on degradation mechanism. In present work, multi-scale models were presented to investigate multi-scale physicochemical phenomena happening at interface of anode/substrate, with the attempt to reveal degradation mechanism. The research procedure for the above goal was addressed in detail as well.

SAM++: Porting the E3SM-MMF cloud resolving model using a C++ portability library

2021 ◽  
pp. 109434202110444
Author(s):  
Isaac Lyngaas ◽  
Matt Norman ◽  
Youngsung Kim
Keyword(s):  
Atmospheric Modeling ◽  
System Model ◽  
Earth System ◽  
Modeling Framework ◽  
Multi Scale ◽  
Scale Modeling ◽  
Fortran Code ◽  
Code Base ◽  
Cloud Resolving Model ◽  
Multi Scale Modeling

In this work, we demonstrate the process for porting the cloud resolving model (CRM) used in the Energy Exascale Earth System Model Multi-Scale Modeling Framework (E3SM-MMF) from its original Fortran code base to C++ code using a portability library. This porting process is performed using the Yet Another Kernel Library (YAKL), a simplified C++ portability library that specializes in Fortran porting. In particular, we detail our step-by-step approach for porting the System for Atmospheric Modeling (SAM), the CRM used in E3SM-MMF, using a hybrid Fortran/C++ framework that allows for systematic reproduction and correctness testing of gradually ported YAKL C++ code. Additionally, analysis is done on the performance of the ported code using OLCF’s Summit supercomputer.

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