In the Oil and Gas industry, installing pipe loops is a well-known hydraulic practice to increase oil pipeline capacities. Nevertheless, could promote an unfavorable phenomenon known as fouling. That means that in heavy oil-water mixture gathering system with low flow velocities, stratified pattern will appear. consequence, due high viscosity, stick on pipe, causing reduction of effective diame...

Currently, among the most popular computational fluid dynamics software packages are commercial CFD – ANSYS CFX, Fluent, STAR-CCM+ and several others. In contrast to above-mentioned packages, there is an OpenFOAM, a non-commercial, freely distributed, integrated platform for numerical modeling of solid-state mechanics tasks (including tasks), it becoming more popular. addition being non-commerc...

Since the pump as turbine is increasingly employed in energy storage, improving efficiency both and modes required for economic benefits. This study aims to analyze vortex flow characteristics control methods reduce hydraulic loss. In this paper, a delayed detached eddy simulation was applied low specific speed pump-turbine. Based on entropy production analysis vorticity binary decomposition lo...

the applications of electrochemical machining are increasing because of increasing requests of industries for materials with high strengh and high hardness. regular ecm uses a tool with spicified profile shape that is similar to final shape of workpiece. in this reasearch a nozzle that delivers electrolyte to the machining gap is used for machining cylinderical workpieces. by moving the electro...

We report the fluorescence emission which is driven by femtosecond laser pulses with a repetition rate of 100 MHz and center wavelength 1040 nm in nitrogen gas jet. The experiment performed enhancement cavity coupled high laser. In contrast to previous observation at low jet, where 391-nm radiation was observed but 337-nm missing, three times stronger than our experiment. By examining dependenc...

the study of interactions of jet into cross flow at different longitudinal and transverse angles ofjet was studied. the following components were designed and constructed: a low velocity windtunnel to produce the uniform flow, a flat plate with a traverse injection system to simulate the jetinjection, and a spatial rake to measure the total pressure. the tests were carried out atlongitudinal (α...