Paper Conference

Proceedings of BauSim Conference 2010: 3rd Conference of IBPSA-Germany and Austria


Skalen-Adaptive Simulation thermischer Behaglichkeit in Innenräumen

Christoph van Treeck, Jérôme Frisch, Ernst Rank, Stefan Paulke, Iris Schweinfurth, Rudolf Schwab, Andreas Holm

Abstract: The paper addresses the scale-adaptive coupling of simulation methods for indoor thermal quality performance prediction. Starting from results obtained by a whole-year building performance simulation, we identify periods, where operative room temperatures exceed a threshold. The model resolution is refined in space and time by inserting a multi segment thermal manikin model into the scene. A raytracing model computes the solar radiation absorbed at the manikin skin, whereas a radiosity solver calculates the diffuse short and long wave radiative heat transfer between manikin and its surroundings. Predefined heat transfer coefficients describe the convective heat transfer, which are previously computed by CFD. We adapt a thermoregulation model to simulate metabolism and blood circulation within the human body. The model predicts the dynamic responses of the body in terms of skin and core temperatures to changing environmental conditions. We make use of the THESEUS-FE implementation of Fiala's model. Skin temperatures resulting from a coupled simulation are transformed into equivalent temperatures and are correlated with local thermal sensation votes. The empirical correlations are obtained from experiments with test subjects involving questionnaires which have been conducted at the Fraunhofer Institute for Building Physics.
Pages: 152 - 157