Franz Durst

TL;DR: In this paper, a stretching device was used to measure the relaxation time of polyacrylamide-branched polysaccharides, and the largest relaxation time was found to be the largest (∼26 ms) for the grafted carboxymethyl cellulose.

TL;DR: In this article, a combined analytical and experimental investigation of sinusoidal mass flow-controlled, pulsating, laminar and fully developed pipe flow was carried out, where the equations describing such flows were normalized to allow for a general solution, depending only on the normalized amplitude mA* of the mass flow pulsation and the normalized frequency F.

TL;DR: An analysis of Gaussian beam effects in LDA systems in order to quantify their influence on the Doppler signal shows that both axial and lateral frequency gradients can exist in the probe volume of improperly aligned L DA systems.

TL;DR: In this paper, a two-layered liquid film attached to a horizontal solid substrate is considered and the effect of the van der Waals disjoining pressure on the film's stability is investigated.

TL;DR: In this paper, temperature profiles in both phases near the interface during steady state evaporation confirm the earlier measurements and indicate the suitability of the apparatus for measurements close to the interface.