This study deals with the investigation regarding the behavior of liquid cryogenic propellants in the launcher upper stages under microgravity with superheated tank walls. It contributes in this way to the application-oriented basic research by describing mathematically and quantifying experimentally the influence of evaporation on the interface reorientation of cryogenic liquids. In broader terms this work shows, both in a mathematical and an experimental way, the influence of the heat and mass transfer in the fluid and solid phases on the linear momentum transfer in the liquid phase due to the coupling of the transfer mechanisms. The main assumption behind this study is based on the principle that the solution of a partial differential equation depends on its boundary condition. In this case these are the mass balance boundary conditions at the interface and the contact line. These boundary conditions relate the respective liquid and the interface velocities to the mass flux due to interfacial evaporation, or phase change in general. A mathematical description of the reorientation was developed implementing an equation for the contact line boundary condition which takes explicitly into account the evaporation or the wall superheat at the contact line, respectively. Both the contact line velocity and the contact line angle become functions of the evaporation at the contact line and accordingly of the related dimensionless numbers. The implementation of the contact line boundary condition completes the equation system describing the non-isothermal flow macroscopically. A joint scaling approach of all field equations and boundary conditions was developed through which the influence of evaporation on the capillary-driven motion was expressed mathematically. This influence on the motion of the whole interface was experimentally quantified, too. For that purpose cryogenic liquids were used in drop tower experiments at ZARM, University of Bremen, with varying wall temper
Select a Delivery Option
Behavior of cryogenic liquids under compensated gravity and non-isothermal boundary conditions
You’re item was added to pickup at [location]
You’re [amount] away from FREE shipping!
You qualify for FREE shipping!
Translation missing: en.settings.free_shipping_default_message
Behavior of cryogenic liquids under compensated gravity and non-isothermal boundary conditions
Choosing a selection results in a full page refresh.
Opens in a new window.
eBooks from Indigo are available at Kobo.com
Simply sign in or create your free Kobo account to get started. Read eBooks on any Kobo eReader or with the free Kobo App.
Why Kobo?
With over 6 million of the world's best eBooks to choose from, Kobo offers you a whole world of reading. Go shelf-less with your library and enjoy reward points with every purchase.