Leak detection technology, based on the disturbance-reflected signal, can realize pipeline state inspection without relying on the transient characteristics of leakage. However, the lack of research on the factors affecting the detection effect of…
Leak detection technology, based on the disturbance-reflected signal, can realize pipeline state inspection without relying on the transient characteristics of leakage. However, the lack of research on the factors affecting the detection effect of…
Leak detection technology, based on the disturbance-reflected signal, can realize pipeline state inspection without relying on the transient characteristics of leakage. However, the lack of research on the factors affecting the detection effect of…
Industrial market is becoming increasingly competitive and companies need even more advanced resources to advantage over competitors. As an example, simulation is part of Industry 4.0 technologies and a key tool for lay out re-configuration, in order…
The world of aerodynamics relies on experimentation and obtaining practical results to solve complex real-life problems. In most cases, the aerodynamic tool used to study the flow and its related characteristic is a wind tunnel. Wind tunnels…
Hydrogen sulfide (h2s) leakage and dispersion from a sulfide recycle installation in different wind speeds are simulated by implementing a 3D Computational Fluid Dynamics (CFD) model. h2s concentrations of monitor points which represent dispersion…
A computational fluid dynamic (CFD) simulation research on the pressure perturbations generation is accomplished and verified by experiments to study the fundamental of acoustic leak detection and location method for natural gas pipelines. When…
Natural gas (NG) is an alternative combustible fuel for the transportation sectors due to its clean combustion, small carbon footprint, and, with recent breakthroughs in drilling technologies, increased availability and low cost. Currently, NG is…
Natural gas hydrate emerges as a sustainable and alternative clean energy source. Japan (2013) and China (2017) have performed production trials on marine natural gas hydrate successfully. Sand production with associated risk is one of the main…
The injection of green hydrogen into the natural gas grid is a way to decarbonize the gas sector and build an economic transport route for the large-scale delivery of hydrogen. The suitability of the natural gas infrastructure for this purpose…
One of the main challenges in oil transmission lines and petroleum products is fluid impurities especially suspended solids. Suspended solid particles, most of which are caused by corrosion of pipe walls and equipment, have many adverse effects on…
In order to calculate the wax deposition rate of crude oil pipelines and discuss its regularity, a pseudo-three-dimensional wax deposition numerical model was established based on computational fluid dynamics and heat transfer theory. The model…
With global warming and 2050 carbon reduction targets, the demand for Liquefied Natural Gas (LNG) marine transportation continues to increase. LNG carriers that experience emergency unseaworthy accidents at sea have the need for emergency transfer…
The existence of saltwater in extracted crude oil causes major problems such as corrosion and low quality of the extracted crude oil. Therefore, droplet coalescence of saltwater and desalination have been paid much attention by researchers about…
Wax deposition is a hot and difficult topic in waxy crude oil transportation. Wax molecular diffusion is recognized to play a crucial role in wax deposition. Empirical correlations of Hayduk-Minhas and Wilke-Chang are widely used to calculate the wax…
Pilot ignited high pressure direct injection natural gas engines have a lower tendency of end-wall gas formation owing to the fuel introduction method. Thus, this type of engines are adaptable to high compression ratios and have the potential to…
The plunger pump which once pumped water was tried to transport crude oil. Because of the big crude oil's dynamic viscosity, the plunger pump's self-absorption characteristic decreased, and the plunger pump's flow rate and efficiency reduced, the…
At least 24 Liquefied Natural Gas (LNG) rollover incidents have been reported since 1960. During rollover, because of the heat ingress through the tank walls, a stratified LNG may be suddenly homogenised while releasing massive amounts of vapour. The…
An accidental leakage of Liquefied Natural Gas (LNG) can occur during processes of production, storage and transportation. LNG has a complex dispersion characteristic after release into the atmosphere. This complex behaviour demands a detailed…
The minimization and utilization of boil-off gas (BOG) during the production, storage, and transportation of liquefied natural gas (LNG) have drawn wide interests. However, current studies on quantification of BOG generation still need to be improved…
It is a recurrent decimal that conventional transportation fuel is becoming a scarce commodity in Nigeria. Owing to Oil refineries producing below designed capacity and not meeting with demand for transportation fuel in the country. This has been…
The accidental gas explosions are major safety concerns in the oil and gas sectors. A typical gas explosion associates with complex interaction between obstacles and turbulence. Compared to the gas explosion, the chemical explosion such as TNT…
Liquefied petroleum gas (LPG) is widely used in domestic cookstoves as it is a clean and high energy content fuel in comparison with other traditional cooking fuels. With the increasing demand of LPG, study and improvement of cookstove performance…
Fouling phenomena, generally related to heavy crude oils and bituminous petroleum fractions, nevertheless affects significantly the preheat train (PHT) of the light Algerian crude oil. In this study, a two dimensional model was developed using the…
The United States Department of Energy (DOE) manages over 50 Metric Tons Heavy Metal (MTHM) of aluminum-clad spent nuclear fuel. One main source for DOE's Aluminum-clad spent nuclear fuel (ASNF) inventory is the advanced test reactor (ATR) at the INL…
Computational fluid dynamics (CFD) simulation was applied to simulate the dilution of undiluted crude oil (UCO) in a dilution tank of a palm oil mill. Fluid flow and mixing characteristics were examined. Considering the mixing behavior, the mixing of…
The improvement of the physicochemical properties of heavy crudes for their better use has brought the application of new technologies and processes to the oil and gas industry. Hydrodynamic cavitation consists of cavitating the working crude oil as…
Adding hydrogen to natural gas is a promising way to improve the ignition stability and reduce the greenhouse gas emissions of pilot-ignition direct-injection natural gas engines. Most of the previous studies concerning hydrogen-enriched natural gas…
Energy fraction of the main (premixed) fuel and pilot injection timing are important in dual-fuel pilot diesel ignition engine. In the present study, natural gas, which is the main premixed fuel, is induced into the engine through the intake port,…
To study the influence law between pressure loss of conveyor system and parameters of hydraulic transmission system for cutter-suction mining in submarine natural gas hydrate exploitation, such as diameter, velocity, volume fraction and particle…
Homogeneous charge compression ignition (HCCI) combustion phasing control is one of the most difficult challenges of operating this new concept of combustion. In this study, a dimethyl ether (DME)/natural gas (NG) blend fuel HCCI engine is simulated…
Numerical optimization of nitrogen oxides (NOx) formation is an essential factor during developing low pollution combustor of gas turbine. The Computational Fluid Dynamics-Chemical Reactor Network (CFD-CRN) hybrid method has a great advantage in fast…
The present paper is focused on the development of a high-performance, monofuel, spark ignition engine running on natural gas, featuring a high volumetric compression ratio and a variable valve actuation system. More specifically, the cylinder head…
An in-situ spiral separator was designed to sand removal and purification NGH to solve the problems of equipment wear, reservoir collapse and so on, based on the solid fluidization method and combined with the physical properties of mixed slurry.…
This research presents the test results carried out in a diesel engine converted to spark ignition (SI) using gaseous fuels, applying a geometry change of the pistons combustion chamber (GCPCC) to increase the turbulence intensity during the…
One of the important challenges in city gate gas pressure reduction stations is the heating of the natural gas prior to pressure reduction. Regarding the low efficiency of the common water bath heaters in these stations another type of double…
The aim of this work is to investigate and improve the understanding of the complex processes involved in NOx formation during oxy-fuel combustion of natural gas. In this study, two industrial non-premixed jet burner designs were experimentally and…
A CFD methodology to model natural gas Light-Duty SI (Spark-Ignition) engines is here proposed. The ignition stage is modeled by means of a simplified Eulerian spherical kernel approach (deposition model). Then, the fully turbulent flame propagation…
In CNG/Diesel reactivity controlled compression ignition (RCCI) engines, because of low reactivity fuel (natural gas) spread of flame in combustion chamber suffers process of combustion and also there is more unburned hydrocarbon emission in this…
A natural gas transportation pipeline with a gaswater two-phase flow containing CO2 is prone to severe flow-assisted corrosion (FAC). The accumulation location of the water phase in the pipeline and the wall shear stress distribution are important…
Coil-wound heat exchangers (CWHEs) have been widely used in natural gas liquefaction plants nowadays. But few studies on the condensation heat transfer and frictional pressure drop of mixed hydrocarbon refrigerants inside the tubes of CWHEs have been…
Quifa is one of the largest heavy-oil fields in Colombia with a total fluids production of 1,320 KBPD with a water cut of 96.7% through 272 active wells, approximatively. Facilities to handle such amounts of water, have to deliver crude oil under…
The applications of homogeneous charge compression ignition (HCCI) engine are still limited due to the absence of a definite means to control ignition timing and narrow the operating region. It was found that thermal stratification and charge…
In this work, an investigation of the effect of natural gas-hydrogen blended fuel on the combustion performance of a Rich/Quench/Lean (RQL)can combustor. Actually, a CFD numerical simulations have been performed for various volumetric fractions of…
With the increasing requirement of global energy resources, researchers seek for new ways to deal with unconventional crude oil resources. Using the Computational Fluid Dynamics numerical simulation method, the standard k- turbulence model and the…
A genetic algorithm(GA)numerical optimization platform was developed by coupling a micro GA code with a computational fluid dynamics(CFD)code. Based on this optimization platform, natural gas and diesel dualfuels combustion was systematically…
In this research, a reduced chemical kinetic mechanism was coupled in computational fluid dynamics (CFD) model to study the detailed influence mechanism of natural gas (NG) energy fraction on the diesel pilot ignition (DPI) NG engines. Based on the…
In this paper, the ignition delay and laminar combustion characteristics of natural gas were tested in a chemical shock tube and a constant volume combustion reactor, respectively, and simulated with the Gri_3.0, USC_2.0 and NUI_Galway models,…
This article describes the application of a modified first-order conditional moment closure model used in conjunction with the trajectory-generated low-dimensional manifold method in large-eddy simulation of pilot ignited high-pressure direct…
In order to investigate the effects of hydrogen enrichment on the combustion and emission formation processes of large medium-speed natural gas engines ignited by pre-chamber turbulent jets, a computational fluid dynamic method coupled chemical…