Research on the Performance Influence of the Flow Metering in the Natural Gas Pipeline with the Remit Pipe

2011 ◽  
Vol 52-54 ◽  
pp. 1458-1463
Author(s):  
Yong Xue Zhang ◽  
Zhi Cheng Shi ◽  
Chang Liu ◽  
Chan Guo
Keyword(s):  
Natural Gas ◽  
Flow Field ◽  
Economic Benefit ◽  
Flow Measurement ◽  
Gas Flow ◽  
Internal Flow ◽  
Natural Gas Pipeline ◽  
Flow Metering ◽  
Full Development ◽  
Main Factor

The flow measurement of the natural gas directly influences the economic benefit, which includes development, operation, allotment and the utilization in the industry of the natural gas. Moreover the structure of the pipeline is the main factor for the accuracy of the flow metering. In this paper, the research on the internal flow field of various kinds of pipe structure with the remit pipe, which are the different inflows and whether equipped with the panel rectifier separately, is done with the method of the numerical simulation and the experiment. The conclusion shows that the desire length to recover the full development turbulence section in the downstream of the remit pipe is most in the pipe structure with the stagger inlet-outlet and no rectifier. While that in the pipe structure with the opposite inlet-outlet and with a rectifier reaches the least. It can be got that the most appropriate installation site of the flow meter and the design of the pipe structure of the natural gas from the research on the influence pattern of the gas flow field.

Coupled Heat and Mass Transfer CFD Model for Methane Hydrate

2015 ◽  
Author(s):  
Eugenio Turco Neto ◽  
M. A. Rahman ◽  
Syed Imtiaz ◽  
Thiago dos Santos Pereira ◽  
Fernanda Soares de Sousa
Keyword(s):  
Natural Gas ◽  
Multiphase Flow ◽  
Gas Hydrate ◽  
Gas Flow ◽  
Three Dimensional ◽  
Hydrate Formation ◽  
Cfd Model ◽  
Flow Metering ◽  
Ansys Cfx ◽  
Gas Hydrate Formation

The gas hydrates problem has been growing in offshore deep water condition where due to low temperature and high pressure hydrate formation becomes more favorable. Several studies have been done to predict the influence of gas hydrate formation in natural gas flow pipeline. However, the effects of multiphase hydrodynamic properties on hydrate formation are missing in these studies. The use of CFD to simulate gas hydrate formation can overcome this gap. In this study a computational fluid dynamics (CFD) model has been developed for mass, heat and momentum transfer for better understanding natural gas hydrate formation and its migration into the pipelines using ANSYS CFX-14. The problem considered in this study is a three-dimensional multiphase-flow model based on Simon Lo (2003) study, which considered the oil-dominant flow in a pipeline with hydrate formation around water droplets dispersed into the oil phase. The results obtained in this study will be useful in designing a multiphase flow metering and a pump to overcome the pressure drop caused by hydrate formation in multiphase petroleum production.

Sensitivity of natural gas flow measurement to AGA8 or GERG2008 equation of state utilization

2018 ◽  
Vol 57 ◽  
pp. 305-321 ◽  
Author(s):  
Mahmood Farzaneh-Gord ◽  
Behnam Mohseni-Gharyehsafa ◽  
Alexander Toikka ◽  
Irina Zvereva
Keyword(s):  
Equation Of State ◽  
Natural Gas ◽  
Flow Measurement ◽  
Gas Flow ◽  
Natural Gas Flow

scholarly journals Effect of Inlet Geometry on Fan Performance and Flow Field in a Half-Ducted Propeller Fan

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Pin Liu ◽  
Norimasa Shiomi ◽  
Yoichi Kinoue ◽  
Ying-zi Jin ◽  
Toshiaki Setoguchi
Keyword(s):  
Flow Field ◽  
Flow Measurement ◽  
Three Dimensional ◽  
Pressure Rise ◽  
Internal Flow ◽  
Fan Performance ◽  
Ducted Propeller ◽  
Inlet Geometry ◽  
Blade Tip ◽  
The One

In order to clarify the effect of rotor inlet geometry of half-ducted propeller fan on performance and velocity fields at rotor outlet, the experimental investigation was carried out using a hotwire anemometer. Three types of inlet geometry were tested. The first type is the one that the rotor blade tip is fully covered by a casing. The second is that the front one-third part of blade tip is opened and the rest is covered. The third is that the front two-thirds are opened and the rest is covered. Fan test and internal flow measurement at rotor outlet were conducted about three types of inlet geometry. At the internal flow measurement, a single slant hotwire probe was used and a periodical multisampling technique was adopted to obtain the three-dimensional velocity distributions. From the results of fan test, the pressure-rise characteristic drops at high flowrate region and the stall point shifts to high flowrate region, when the opened area of blade tip increases. From the results of velocity distributions at rotor outlet, the region with high axial velocity moves to radial inwards, the circumferential velocity near blade tip becomes high, and the flow field turns to radial outward, when the opened area increases.

Analysis of Concentric Canister Wall Roughness Effect on Jet Flow Based on Fluid Dynamics

2012 ◽  
Vol 252 ◽  
pp. 3-8
Author(s):  
Yun Shan Bai ◽  
Yi Jiang ◽  
Dong Mo Zhou
Keyword(s):  
Flow Field ◽  
Influence Factor ◽  
Great Influence ◽  
Internal Flow ◽  
Rough Wall ◽  
Concentric Cylinder ◽  
Smooth Flow ◽  
Practical Engineering ◽  
Mesh Update ◽  
Main Factor

Adopting concentric canister launchers (CCL), high temperature and high pressure environment of CCL is unfavorable for the missile launch. In addition to the gap between internal canister and external canister, injecting water for cooling are the main factor of impact the canister flow field, CCL’s rough wall is also a very important influence factor. In this paper, under the two working conditions of rough wall and smooth wall, use dynamic layering manner of moving mesh update method to simulate concentric canister missile launch process. The results reveal that rough wall has a great influence for pressure of concentric canister internal flow field, but the least influence for temperature. In practical engineering applications, need smooth surface material for smooth flow field exhaust when manufacturing concentric cylinder, but the non-concentric canister manufacturing of missile cold-launch canister, retain the rough wall can increase the pressure of the missile launch, this is conducive to missile launch, and also saves manufacturing costs, reduces processing procedures.

The Structure Design and Numerical Simulation of Internal Flow Field with High Efficiency Low Resistance Cyclone

2014 ◽  
Vol 1046 ◽  
pp. 209-212
Author(s):  
Liang Li
Keyword(s):  
Flow Field ◽  
Gas Flow ◽  
High Efficiency ◽  
Internal Flow ◽  
Structure Design ◽  
Field Calculation ◽  
Element Analysis ◽  
Low Resistance ◽  
Calculation Results ◽  
Field Velocity

Introduces the structure and main characteristics of high efficiency low resistance cyclone dust removal, the use of fluid finite element analysis software for the internal flow field is simulated. It can be concluded that gas flow in the cyclone separator, pressure field, velocity field, such as distribution, and on the basis of the flow field calculation results for the structure design about analyzed and discussed.

Numerical Simulation on Flow Field inside the Drainage Valve of the Natural Gas Pipeline

2013 ◽  
Vol 853 ◽  
pp. 377-383
Author(s):  
Zhian Deng ◽  
Hao Yun Deng ◽  
Mei Xie
Keyword(s):  
Numerical Simulation ◽  
Natural Gas ◽  
Flow Field ◽  
Velocity Vector ◽  
Gas Pipeline ◽  
Natural Gas Pipeline ◽  
The Standard Model ◽  
Vector Distribution ◽  
Flow Field Characteristics ◽  
Valve Opening

In order to ensure safety and reliable operation of the natural gas pipeline drainage valve,the 3D numerical simulation on flow field characteristics inside the drainage valve of the natural gas pipeline under the different conditions of the seasons of winter and summer is carried out by using the standard model. In the tow different season condition, the streamline and velocity vector distribution inside the drainage valve has been studied. Under the two seasons conditions are studied. The results show that as the change of drainage valve opening the turbulence appear in the valve and the maximum value appears in the inlet,which the winter is larger than summer.The velocity vector distribution in the drainage valve is not the same and the larger velocity appears at the drain exit with the valve opening increasing. The differences in temperature, condensate discharge, condensate gas pipeline in different displacement,density and viscosity in the winter seasons and summer seasons results in the different characteristic.of the flow field characteristics inside discharging valve.

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