Jens von Wolfersdorf

TL;DR: In this paper, an internal ribbed cooling channel including a 180 deg bend with a 2:1 inlet and a 1:1 aspect ratio outlet channel was validated against experimental results in terms of spatially resolved heat transfer distributions, pressure losses, and velocity distributions.

TL;DR: In this article, the authors proposed a method to achieve homogeneous cooling in a cooled blade for a gas turbine by providing a plurality of internal cooling passages and film-cooling holes arranged one above the other in the radial direction in the blade in such a way that the discharge openings of the film cooling holes in each case lie so as to be offset from the internal cooling passage.

TL;DR: In this article, an approach based upon simplified analytical models is presented to analyze the experimental data of throughflow behavior and cooling efficiency and a simplified thermal model is used to analyse the effect of fluid property variations with temperature on pressure loss for different coolants.

TL;DR: In this article, the influence of different turning vanes configurations on pressure loss and local heat transfer distribution was investigated in a rectangular two-pass channel connected by a 180 deg sharp turn with a channel height-to-width ratio of HIW=2.

TL;DR: In this article, thermal inertia characteristics of thermocouples and their effect on the calculation of impingement heat transfer coefficient were investigated over a range of plenum flow conditions typically found in impingements heat transfer experiments.