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This presentation deals with simulation studies that will be interpreted as numerical experiments. Porous structures are modelled in three dimensions (microstructure models). Heat transfer and pressure drop of the flow through a porosity is analysed using the numerical solution of the Navier-Stokes equations (CFD). Empirical correlations for simplified calculations are presented that can be used by engineers for rough estimates and design of components with porosities like metal foam.
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The influence of climate change on urban heat island intensity is analyzed for the city of Karlsruhe, southwestern Germany. First, its present diurnal and seasonal as well as spatial modes of variability are characterized by means of different meteorological observation datasets. One focus is on temperature differences during heat events. Second, high-resolution regional climate model data allow for projecting the future development of the urban heat island.
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The present work investigates the evolution of the electricity system and the heat system of the residential buildings in Germany until 2050. The aim of the research work relates to the analysis of the temporal evolution of the investigated energy systems as well as of the potential of innovative technologies at the interface of electricity and heat along with the assessment of the goals of climate and energy policy in the heat system of the residential sector.
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