Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"Rieselfilm"”.
-
Analytische Lösung des gekoppelten Wärme- und Stofftransportproblems bei der Absorption im laminaren Rieselfilm
… trotz der teilweise starken Vereinfachungen des Rieselfilmmodells, z.B. der sehr starken Vereinfachung der Filmströmungsverhältnisse, der Annahme kompletter Benetzung der Rohre etc.. Mit der in dieser Arbeit präsentierten analytischen Lösung für die diabate Wand lässt sich anhand einer …
-
Experimentelle Untersuchung der Strömungscharakteristik und des Wärmeübergangs bei welligen Rieselfilmen
In the present work experimental investigations of the flow characteristic and heat transport of wavy silicone oil films were accomplished with different angles of inclination (13°, 30°, 60° and 90°) and Kapitza numbers, which allow a deeper view into the structure and the heat transport phenomena. …
-
NMR-Bildgebung an fallenden Filmen und reaktiven Gelkugeln
In this work the advanced features of NMR imaging (magnetic resonance imaging, MRI) were used to investigate two different systems. The first system was a fluid film running down a vertical plate. The second system was a sphere made from alginate gel in which an enzymatical driven reaction from …
-
Numerical methods for three-dimensional incompressible two-phase flow problems
In this thesis a numerical approach for the simulation of three-dimensional incompressible two-phase flows is presented. It is based on a level set method for capturing the interface. The mathematical model consists of the incompressible Navier-Stokes equations and an advection equation for the …
-
Numerical methods for the solution of a three-dimensional anisotropic inverse heat conduction problem
The research topic of this thesis is closely related to subjects studied in the collaborative research center (SFB) 540 at the RWTH Aachen University. One goal in SFB 540 is the systematic modelling of selected (kinetic) phenomena, as e.g. the heat and mass transfer in wavy falling films, leading …