Rene Pecnik

TL;DR: In this paper, the effect of thermal boundary conditions on developing turbulent pipe flows with fluids at supercritical pressure was studied using direct numerical simulations, and two different thermal wall boundary conditions were studied: one that permits temperature fluctuations and one that does not allow temperature fluctuations at the wall (equivalent to cases where the thermal effusivity ratio approaches infinity and zero, respectively).

TL;DR: In this article, the authors focused on the application of hybrid nanofluids containing reduced graphene oxides decorated with silver nanoparticles in volumetric solar absorbers, and the results indicated that the prepared nanoparticles can be employed for direct absorption solar collectors over a short period of solar irradiation time, even at a low illumination intensity of one sun.

TL;DR: In this paper, a computational infrastructure to solve the compressible Reynolds-averaged Navier-Stokes equations on unstructured meshes is introduced, and a combustion model based on tabulated chemistry is considered to incorporate detailed chemical kinetics mechanics while retaining a low computational cost.

TL;DR: In this paper, high voltage is applied to distilled water filled in two glass beakers which are in contact, a stable water connection forms spontaneously, giving the impression of a floating water bridge.

TL;DR: In this paper, a simulation of a heated turbulent pipe flow with a fluid at supercritical pressure is performed at a Reynolds number of Re τ = 360, based on pipe diameter and friction velocity at the inlet.