Paper Conference

Proceedings of BauSim Conference 2014: 5th Conference of IBPSA-Germany and Austria


Three Dimensional HAM Transport in Timber Beam Ends – Measurements and Simulation

S. Vogelsang, D. Kehl, U. Ruisinger, F. Meißner

Abstract: In building physics the calculation of two dimensional moisture transports usually is sufficient. But in some cases like timber beam ends in masonry walls three dimensional liquid, vapour, and air transport is important for the hygrothermal behaviour of a construction. This paper presents the experiments to determine material properties in all anisotropic dimensions of wood (longitudinal, radial and tangential). A strong congruency of dimension separated simulation results with corresponding water absorption and drying experiments is shown. These uni-dimensional results are discussed, interpreted, and applied onto a transient anisotropic three dimensional solver. Finally different two and three-dimensional verification experiments are introduced to evaluate performance and soundness of three-dimensional hygrothermal simulation results in a controlled environment (Academic Timber Beam End Benchmark), including a description of boundary and climate conditions. A comparison of simulation results and executed experiments is presented as conclusion.
Pages: 174 - 181