Oil and gas production industries use large (diameter > 0.8 m) ultrasonic flow meters (USMs) to measure exhaust from flare stacks, emissions smokestacks, of natural gas, etc. Since most laboratories do not have compressors with sufficient capacity (>10 kg/s) calibrate meters, calibrations are performed using the blow-down method where is generated by discharging high pressure tanks, leading sig...

The performance of the electric submersible pump (ESP) significantly affected by Gas Void Fraction (GVF). Thus, using of a Rotary Gas Separator (RGS) is a suitable solution for this issue. The performance of the RGS is function of different parameters such as geometry of impeller, rotating speed, boundary conditions, media viscosity and GVF. In this study, the influences of GVF, viscosity, and ...

Transient natural convection is numerically investigated in an enclosure using variable thermal conductivity, viscosity, and the thermal expansion coefficient of Al2O3-water nanofluid. The study has been conducted for a wide range of Rayleigh numbers (103≤ Ra ≤ 106), concentrations of nanoparticles (0% ≤ ϕ ≤ 7%), the enclosure aspect ratio (AR =1), and temperature differences between the cold a...

This paper simulates transient compressible adiabatic gas flows in a long pipeline following a catastrophic failure using an implicit high order finite difference scheme as a discretisation technique for convective terms. A rupture is assumed to be occurred accidentally at a distance from the feeding point of a pipeline where the pipeline being divided into two distinct sections, high and low p...

In this paper, a three-dimensional numerical model of transient incompressible gaseous flow in microchannels was established. The influence of changing the inlet velocity on the transient fluid flow is analyzed – using finite volume software (Fluent 6.3). The study showed that the transient period is decreased when the inlet velocity is increased, the maximum velocity is almost twice the entran...

The performance of the electric submersible pump (ESP) significantly affected by Gas Void Fraction (GVF). Thus, using of a Rotary Gas Separator (RGS) is a suitable solution for this issue. The performance of the RGS is function of different parameters such as geometry of impeller, rotating speed, boundary conditions, media viscosity and GVF. In this study, the influences of GVF, viscosity, ...

Electromagnetic transient programs (EMTPs) are widely used for simulating electromagnetic in power systems. With the increasing interest integrated energy system (IES), it would be beneficial to extend scope of EMTP-type application multi-physics transients electrical and gas networks. An efficient accurate model pipeline is proposed EMTP simulation pneumatic transients. The split into a number...

The water leak-off during hydraulic fracturing in shale gas reservoirs is a complicated transport behavior involving thermal (T), hydrodynamic (H), mechanical (M) and chemical (C) processes. Although many leak-off models have been published, none of the models fully coupled the transient fluid flow modeling with heat transfer, chemical-potential equilibrium and natural-fracture dilation phenome...