gallery:multiscaleheattransport
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gallery:multiscaleheattransport [2010/12/15 20:11] – smilauer | gallery:multiscaleheattransport [2013/04/11 10:40] – complaint2 | ||
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- | ===== Multiscale Heat Transport ===== | ||
- | Hydrating concrete produces significant amount of hydration heat, which causes several problems in massive concrete elements. Multiscale simulation helped | + | Buy [[http:// |
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- | Two computational scales are defined here, see Figure on the right | ||
- | - Level of cement paste. CEMHYD3D material model predicts the evolution of discrete microstructure on the scale of micrometers and returns liberated heat. | ||
- | - Structural level. The heat balance equation is solved with finite elements. Several finite elements are grouped together and mapped to one CEMHYD3D instance. Nine OOFEM' | ||
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- | The Figures below show evolution of temperature during concrete hardening. The simulation runs on a left symmetric part of the arch cross-section. Optimal position of cooling pipes is apparent. Note that the cooling turns off after several hours which detaches natural Dirichlet' | ||
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- | The flat bottom subfigure shows the 2D triangular mesh and the assignment of hydration models to groups of finite elements on the cross-section. The right Figure validates the multiscale simulation with the temperature in the core of the cross-section. Temperature remained below 65C during summer casting, which was found acceptable. | ||
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- | //Created 12/2010 by Vít Šmilauer. Acknowledgements belong to B. Patzák, Z. Bittnar, J. L. Vítek and Pontex Consulting Engineers, Ltd.// |
gallery/multiscaleheattransport.txt · Last modified: 2013/04/15 15:30 by bp