This work numerically evaluates the role of advancing velocity on water entry rigid wedges, highlighting its influence development underpressure at fluid–structure interface, which can eventually lead to fluid detachment or cavity formation, depending geometry. A coupled FEM–SPH numerical model is implemented within LS-DYNA, and three types asymmetric impacts are treated: (I) symmetric wedges w...

Semi-batch evaporative crystallization of CoSO4 was investigated at various underpressures and with different heating powers. The for boiling aqueous solutions temperatures concentrations were measured compared to predicted values obtained by the Aspen Plus Version 11 process simulation software. presence solute decreased underpressure solution in comparison pure water. In experiments, crystall...

© 2008 American Institute of Physics, S-0031-9228-0804-010-6 Relativistic sound waves raced through the hot plasma that filled the universe for its first 380 000 years. That sound left an imprint that is still discernible in the cosmic microwave background and also in the large-scale distribution of galaxies. Measurements of the sound waves manifested in the CMB, coupled with a detailed underst...

OBJECTIVES To assess the long-term results of the Provox ActiValve, a prosthesis for voice rehabilitation after total laryngectomy that was designed to lessen the need for frequent replacements caused by Candida and "underpressure." PATIENTS AND METHODS Retrospective assessment of device lifetime, indications for replacement, voice quality, and maintenance issues, measured by a structured tri...

Quantification of detachment forces between bacteria and substrates facilitates the understanding of the bacterial adhesion process that affects cell physiology and survival. Here, we present a method that allows for serial, single bacterial cell force spectroscopy by combining the force control of atomic force microscopy with microfluidics. Reversible bacterial cell immobilization under physio...

The challenges posed by elevated rock hardness, deficient drillability, excessive friction torque, and significant underpressure in extended−reach horizontal wells are the primary factors that contribute to low ROP (Rate of Penetration) limited reach during drilling operation. Reducing drag is one methods addressing aforementioned challenges. To augment pulse output characteristics oscillating ...

Calderas are subcircular volcanic depressions that can occur due to drainage of a subsurface magma reservoir. Numerous models simulating the initiation and growth caldera collapse consider homogeneous overburden This study describes plastic implementing limit analysis investigate effects weak layers (low cohesion low friction) on formation structure. Our show presence within crust favours onset...