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Paper IV.2

A Mesh Adaptive Technique for the Simulation of Unsaturated Moisture Transfer in Open Porous Materials

S. Roels, J. Carmeliet and H. Hens

Laboratory of Building Physics, Catholic University of Leuven, Leuven, Belgium

doi:10.4203/ccp.65.4.2

S. Roels, J. Carmeliet, H. Hens, "A Mesh Adaptive Technique for the Simulation of Unsaturated Moisture Transfer in Open Porous Materials", in B.H.V. Topping, (Editor), "Finite Elements: Techniques and Developments", Civil-Comp Press, Edinburgh, UK, pp 103-109, 2000. doi:10.4203/ccp.65.4.2

Abstract

Moisture transport in most open porous building materials is characterised by a sharp moving waterfront. Due to the high gradients at the waterfront, an accurate simulation requires a very fine mesh. To reduce computational costs a mesh adaptive method based on the Arbitrary Lagrangian Eulerian (ALE) technique is proposed. During remeshing mesh-connectivity and number of degrees of freedom remain constant. To relocate the nodes around the moving waterfront an area-based remesh-indicator is equally distributed over the entire domain.

One- and two-dimensional examples of moisture transfer in open porous materials illustrate the capabilities of the method.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 65 FINITE ELEMENTS: TECHNIQUES AND DEVELOPMENTS Edited by: B.H.V. Topping Paper IV.2 A Mesh Adaptive Technique for the Simulation of Unsaturated Moisture Transfer in Open Porous Materials S. Roels, J. Carmeliet and H. Hens Laboratory of Building Physics, Catholic University of Leuven, Leuven, Belgium doi:10.4203/ccp.65.4.2 purchase the full-text of this paper Full Bibliographic Reference for this paper S. Roels, J. Carmeliet, H. Hens, "A Mesh Adaptive Technique for the Simulation of Unsaturated Moisture Transfer in Open Porous Materials", in B.H.V. Topping, (Editor), "Finite Elements: Techniques and Developments", Civil-Comp Press, Edinburgh, UK, pp 103-109, 2000. doi:10.4203/ccp.65.4.2 Abstract Moisture transport in most open porous building materials is characterised by a sharp moving waterfront. Due to the high gradients at the waterfront, an accurate simulation requires a very fine mesh. To reduce computational costs a mesh adaptive method based on the Arbitrary Lagrangian Eulerian (ALE) technique is proposed. During remeshing mesh-connectivity and number of degrees of freedom remain constant. To relocate the nodes around the moving waterfront an area-based remesh-indicator is equally distributed over the entire domain. One- and two-dimensional examples of moisture transfer in open porous materials illustrate the capabilities of the method. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £80 +P&P)
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