Mitarbeiter/Innen

ICE GENESIS: New Generation of 3D Icing Engineering Tools

The project ICE GENESIS pursues the objective to provide the European aeronautical industry with a validated new generation of 3D icing engineering tools (numerical simulation and test capabilities) addressing App C, App O and Snow condition, for safe, efficient and cost-effective design and certification of future aircraft and rotorcraft. In this framework, TU Darmstadt is conducting experiments and developing models for different phenomena around snow and ice.

The project is funded by the European Union within the framework of Horizon 2020 (grant agreement number 824310).

ICE-GENESIS Website

Drop and spray impact onto a hot substrate: Dynamics and heat transfer

Non-isothermal spray/wall interaction is an important process encountered in a large number of existing and emerging technologies, such as fuel injection in aircraft gas engines and internal combustion engines, and is the underlying phenomenon associated with spray cooling technology. Spray cooling is a very promising technique for the cooling of devices with very high heat flux densities (as encountered in the fields of metalworking, cooling of electronic components or light-water nuclear reactors), surpassing all other conventional cooling methods. The effectiveness of spray cooling is influenced by a large number of parameters, including spray characteristics like drop size, velocity and number density, the surface morphology, but also by the temperature range and thermal properties of the materials involved. Indeed, the temperature of the substrate can have significant influence on the hydrodynamics of drop and spray impact, an aspect which is seldom considered in model formulation. This process is extremely complex and current approaches are highly empirical in nature. In the present research single drop impact as a central element of spray impact is mainly investigated for various thermodynamic and hydrodynamic conditions. Understanding single drop impact is an important and necessary preliminary work in the description and modeling of non-isothermal spray impact. Furthermore, the considerations for the single drop impact are used for the development of theoretical models for spray cooling.

The present research is supported by the German Scientific Foundation (Deutsche Forschungsgemeinschaft) in the framework of the SFB-TRR 75 Collaborative Research Center, subproject C4.