Considerations concerning a thermal joint for a deployable or steerable battery radiator for the Columbus Polar Platform

Different concepts for a moveable thermal joint are described and discussed with respect to the applicability in a dedicated deployable or steerable heat pipe radiator system to handle the waste heat of the NiH batteries of the Polar Platform. Concepts which are identified as possible candidates for near-term deployable radiator development are:...

Sensors for a system to control the liquid flow into an evaporative cold plate of a two-phase heat transport system for large spacecraft

Two-phase flow heat transport systems (thermal busses) for the Columbus Space Platform and the Space Station are expected to incorporate systems to control the liquid flow rates into the evaporative cold plates. Such a control system consists of a sensor that monitors the cold plate (performance), a control algorithm and an actuator i.e. a valve...

Two-phase flow in horizontal pipes

theoretical considerations regarding slurry transport in pipelines.

Dynamics of droplet formation at T-shaped nozzles with elastic feed lines

We describe the formation of water in oil droplets, which are commonly used in lab-on-a-chip systems for sample generation and dosing, at microfluidic Tshaped nozzles from elastic feed lines. A narrow nozzle forms a barrier for a liquid–liquid interface, such that pressure can build up behind the nozzle up to a critical pressure. Above this...