Abstract
We report on the status of preparatory work in the GeoFlow Experiment which will take place on board Columbus
Orbital Facility (COF) at the International Space Station (ISS). GeoFlow focus on investigations of the stability and
dynamics of convective spherical gap flows under influence of a central force field. To exclude the unidirectional
gravitational force which acts on earth’s surface the planed long-time measurements have to take place in microgravity
environment.
After a introduction and an overview of experiment hardware preparation status which includes application of
measurement techniques, preparatory 3D numerical flow simulations as well as experimental work and the way of
experiment data analysis are presented. Also some aspects of the experiment operation phase will be given. The paper is
then closed with concluding remarks and an outlook on possible future GeoFlow reflight campaigns.
