流体力学: オープンアクセス

Hydraulic fracture can often cause serious disasters, of which the hydraulic fracturing of a single crack is one of the common styles. In the paper, the damage mechanics of the hydraulic fracture are revealed by the hydraulic fracture experiment of the single crack. Mortar is used as a similar material to rock mass, and the hydraulic fracture characteristics experiment was carried out. The hydraulic pressure Pini and the change in water pressure inside the crack were studied. The critical water pressure Pc and the failure mode of the specimen were analyzed under different working conditions. Based on the experiment, the expression for the correction coefficient of the crack width λ and the failure of the critical water pressure Pc were obtained.

This paper present to predict the effect of diameter and length of perforation, inflow angle of perforation, inflow velocity and shape of perforation on pressure drop and then productivity index of vertical wellbore with two perforations. In this study, a Computational Fluid Dynamics (CFD) software code ANSYS CFX15.0 has been used to simulate a model of 3-D turbulent flow with stander k−∈ in a perforated vertical wellbore. The simulation for the vertical wellbore is performed by applying the laws of conservation of mass and momentum. The effect of perforation diameter and length of perforation, inflow angle, inflow types of inlet velocity to the perforation and inflow velocity for 180º and two perforations is studied. From the results of this study, the friction pressure drop is a major component of the total pressure drop and the maximum static (friction) pressure drop occurs at the location of perforation and increases with increasing the perforation diameter. For all the perforation diameter with constant length (0.15 m), the friction pressure drop is higher than 82% of the total pressure, the acceleration pressure drop is less than 16% of the pressure drop for both numerical and theoretical results. The mixing pressure drop is about 2% of the total pressure drop for the numerical results. The increase of inflow to main flow rate ratio increasing the total pressure drop and then decreasing in productivity index.

Linking cosmology and particle physics has long been an outstanding problem. The problem was with the errand theory of Einstein’s Relativity. Here we provide these two field with one equation using Matrix Structural Analysis techniques. The theory of Astro-Theology melds almost perfectly with well established particle physics including the neutron, proton and the electron. Proof for these equations that we make use of here is described in JS Przemeiniecki seminal work. Mass dampens out the superforce which is a sinusoidal impulse force.

Herein we consider the imaginary number and how it leads to the convergence of all mathematics, its ultimate purpose. The golden Mean is interplayed with geometry, and calculus, and linear algebra. We show that transcendental and trigonometry is important in the convergence of mathematics. Finally, the physical universe parameters are considered as the proof of mathematical convergence.

The article presents a method for calculating the focal and dynamic parameters of strong earthquakes in Azerbaijan for the period of 2005-2015 based on broadband entries (BH) of modern digital stations and statistical analysis of the produced solutions. Analysis of compressed axis orientation showed NW-SE orientation in Zagatala region, NS in Sheki and then gradually changing in a clockwise direction to the NE-SW direction in the Caspian Sea. Stretching axis is mainly oriented NE-SW and NS directions, due to the area of immersion of Kura depression under the Greater Caucasus zone. On the basis of the averaged data for each station was organized spatial amplification factor distribution map for the territory of Azerbaijan. The total value of the factor varies within the range of 1,5-4,6. Maximum is observed in the Kura River valley area and Zagatala region, indicating that the layer of the earth's crust under the stations of these regions, strengthen the impact of transverse wave through the source-receiver.

To fully characterize the structure of these alloys it is necessary to augment crystallography with local structural measurements. Here Tellurium dioxide is doped with Zinc acetate dihydrate with Glycene to synthesis the powdered particles of ZnTe by simple chemical synthesis, Zinc acetate dihydrate is taking as the ratio of 90% and Tellurium dioxide as 10% this synthesized powdered particles were pelletized to evaporate on the glass plate by using Electron beam evaporation technique. So many researchers reported this technique for the same materials but RBS scattering is the one of the different analyzing technique for this materials. It has been observed that the energy in MeV of the element is well in agreement with Zinc and Telluride which is present in the preparation.

Understanding conformational and molecular dynamics flexible fitting simulations in various environments and mechanism of flow and temperature distributions and pressure drop across the intelligent molecules in explicit water is determined through spectroscopy and molecular dynamics simulations using quantum chemical calculations and consequently; regulations on the emission of intelligent molecules, biosensors, biomarkers and diagnostics to become more restrictive