The strength and sliding behavior of faults in the crust is largely controlled by friction effective stress, which itself modulated fluid pressure. Most earthquake models assume a fixed pore pressure despite widespread evidence that varies strongly time due to changes permeability. Here we explore how dynamic influence properties earthquakes upper crust. To study this problem develop two dimens...

computational fluid dynamics (cfd) simulations of gas-solid flow through a positive low-pressure pneumatic conveyor were performed using eulerian-eulerian framework. pressure drop in pneumatic conveying pipelines, creation and destruction of plugs along the horizontal and vertical pipes, effect of 90° elbows and u-bends on cross-section concentrations, and rope formation and dispersion were num...

This study explores the application of zigzag-shaped, finless tubes in enhancing heat transfer performance within exchangers. Using three-dimensional numerical simulations, we examined per unit area and volume pressure drop, comparing these findings with a traditional parallel tube exchanger. innovative design strategy involved arranging zigzag-shaped at varying distances, thermal frictional ch...

Introduction: The observed morphologies of impact basins can only be explained by invoking dramatic weakening of the crater walls and floor during crater collapse, but the mechanism underlying the drop in strength is unknown. Here, we explore the possibility that strain-weakening along faults is the primary mechanism. We present a model of temperatureand pressure-dependant strain-weakening alon...

This study focusses on investigating the effect of flow orientation global and local two-phase parameters under conditions. Flow visualization, pressure measurement, conductivity probe measurements are performed in a test facility made 50.8 mm inner diameter acrylic pipes with measurement. Characteristics regimes interfacial structures, frictional drop prediction vertical upward downward flows ...

A high molecular polymer solution with viscoelasticity has the effect of reducing frictional drag, which is quite practical for energy saving. Effective simulations viscoelastic flows in a pipeline Reynolds number realized by incorporating constitutive equation into k−ε−v′2¯−f turbulence model. The Finitely Extensive Nonlinear Elastic Peterlin (FENE-P) model employed characterizing viscoelastic...

Micro-filters are fabricated using MEMS technology, and both measurements and numerical calculations are carried out in order to estimate the power requirement in a micron-size particle collection process using the microfilter. In order to numerically predict the pressure drop through the micro-filter, we focus on the characterization of the geometrical factors, such as internal profile of the ...

Abstract The development of multistage fracturing technology in horizontal wells is a great impulsion to the successful unconventional resources. hydraulic fractures distribute regularly along wellbore, forming seepage channel for fluids tight gas reservoir and greatly improving productivity wells. Based on Green function Neumann product principle, we establish flow model fractured well coupled...