A multi-parametric transient numerical simulation of the start-up a large diameter Pulsating Heat Pipe (PHP) specially designed for future experiments on International Space Station (ISS) are compared to results obtained during parabolic flight campaign supported by European Agency. Since channel is larger than capillary limit in normal gravity, such device behaves as loop thermosyphon ground a...

In this study, a closed-loop pulsating heat pipe experimental investigation was done with 1% wt concentration of cerium oxide/EG-water (60-40) nanofluid. The unsteady state measurement to determine the effect input, filling ratio and evacuation pressure on thermal performance pipe. is assessed in terms temperature variation, resistance effective conductivity most appropriate behaviour observed ...

A new pulsating X-ray source, AX J183220−0840, with a 1549.1-s period was discovered at R.A.= 18h32m20s and Dec.= −84030 (J2000, uncertainty= 0.6) during an

The vortex/swirl flowmeters are meant to measure the flowrate based on the measurement of the flow frequency. Due to the frequency-dependent computation of the flowrate, noflow pulsation causes a false positive, i.e., it indicates certain amount of flowrate when actually there is no flow. This happens when for example, the valves of the flow pipe are closed causing no flow, but some pumps are w...

We have obtained 11.7 μm and 17.9 μm images at the Keck I telescope of the circumstellar dust emission from L2 Pup, one of the nearest (D = 61 pc) masslosing, pulsating, red giants that has a substantial infrared excess. We propose that the star is losing mass at a rate of ∼3 × 10 M⊙ yr . Given its relatively low luminosity (∼ 1500 L⊙), relatively high effective temperature (near 3400 K), relat...