| Abstract: | A forced liquid flow through an open capillary channel with free liquid surfaces was investigated experimentally under low gravity. Since the free surfaces can only withstand a certain difference between the liquid pressure and the ambient pressure the flow rate in the channel is limited. The maximum flow rate is achieved when the surfaces collapse. The aim of the investigation is to determine the limitation of the flow rate and the corresponding critical flow velocity. The investigations were performed on board the sounding rocket mission TEXUS‐37 providing a reduced gravity environment of 10‐4 g in all axis for 6 minutes. |
