Applications for quantum gases include the transport of electrons in semiconductor devices , radiative transfer in thin atmospheres , and energy transport through phonons in small solid objects. Also, he is interested in BGK models for the Boltzmann collision term and the better understanding of the limits of Chapman-Enskog and Grad methods and the relation between these approaches. Aerosol coagulation Other areas of interest include aerososl coagulation problems, in particlular he works on a model for coagulation of aerosol droplets with coagulating enclosures . Droplets which consist of silica and iron are the product of a flame and agglomerate in time. Due to surface tension, the iron forms sphere-shaped enclosures within the droplet.
Brownian motion moves the enclosures in the droplet, and the enclosures tend to agglomerate.
In the model, the well-known Smoluchowski equation for the coagulation of the aerosol is supplemented with additional terms accounting for the coagulation of the enclosures. Surface Tension in Reacting Mixtures Henning Struchtrup also works on Surface tension effects in a reactive binary mixture of incompressible fluids . The intermolecular forces between particles of different species lead to the Cahn-Hilliard theory of diffusive interfaces, which is here embedded into irreversible thermodynamics of reacting mixtures. The model describes surface tension, chemistry and diffusion as well as viscosity and heat transfer. The scaling involves some strong assumptions, and it will be interesting to solve the model under less restrictive conditions.