In the present paper, a fundamental analysis on effect of channel aspect ratio bubble dynamics and heat transfer characteristics for early transient stages growth within confined microchannels rectangular cross-section, under saturated flow boiling conditions, is conducted, utilising high resolution, 3D, transient, conjugate simulations. The open-source toolbox OpenFOAM applied simulations, cus...

Based on transmission line theory, a 4-way wideband coupled-line Wilkinson power divider is designed by the authors, operating from 6 to 18 GHz. It established using novel manufacturing technology with 3D stacked micro-coaxial line, realising attractive advantages of low insertion (IL) loss and compact size. The simulated result shows that proposed 23.5 × 14.46 0.9 mm obtains maximum IL 0.42 dB...

This paper reports the design, fabrication and measurement techniques for a set of low-loss slotted waveguides. The waveguides are fabricated based on micro metal additive manufacturing technology. They were layer by in one piece without need post-fabrication assembly. As examples, straight WR-3.4 (220-330°GHz) WR-2.2 (330-500°GHz) bands tested. Measurement results show insertion loss per unit ...

Abstract Free vibrations of the orthotropic micro/nanoplate with nonclassical shape are investigated. The considered model is based on nonlocal elasticity theory. developed method uses Ritz as well R-function theory for construction system coordinate functions. linear frequencies obtained a rectangular plate two cutouts opposite sides, while boundary conditions several types, including simply s...

Subject to the assumption that sub-barrier fusion is described by an effective one-dimensional energy-independent local potential barrier, the Jeffreys-Wentzel-Kramers-Brillouin approximation for the fusion cross sections is inverted to determine this effective potential. Potential barriers, with their associated experimental errors, are presented for 13C+ 13C and 40Ca+ 40Ca, and the assumption...

In this letter, we describe a novel capillary force gripper with two nozzles for the manipulation of complex-shaped micro-objects. These rapidly form constant-volume droplets and have primary functions: fast water refilling by action droplet formation on-off control diaphragm pump. Capillary is dominant microscopic acting on objects all shapes owing to fluidity water. Therefore, it suitable cap...

Borehole convergence during or after drilling is one of the primary indicators borehole instability. Early recognition instability critical in achieving successful and timely completion operations for exploitation. A series numerical simulations was conducted to investigate poorly cemented sandstones using Discrete Element Method (DEM). Rectangular 2-dimensional Particle Flow Code 2D (PFC2D) mo...