Flow field and noise characteristics of manifold in natural gas transportation station

Much less attention has been focused on the particle deposition in rectifying plate though it is a common problem in shale gas pipe systems. The effects of particle parameter and flow field on the deposition and distribution of particle in a new‐type rectifying plate system are investigated. Both the computational fluid dynamics (CFD) method and the experiment method are used in order to analyze the particle deposition under various conditions. The accuracy of simulation model is verified with measurements in the experiment and from analyzing, and it is found that the Boltzmann equation can well describe the relationship between gas Reynolds number and particle deposition in the rectifying plate system. It is also found from investigation that the particle deposition is greatly affected by the particle parameter. Deposition rate rises with the increase of the particle diameter; however, it reduces gradually with the decrease of particle shape factor. Moreover, the particle mass concentration is an essential dimension that can give a prediction of where the particle may deposit.

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“…In the simulation, kinetic energy of turbulence (

k

) and turbulent dissipation energy ( ε ) are used to restrict turbulent fluctuation and are shown as follows:

U_{j} \frac{\partial k}{\partial x_{j}} = \frac{\partial}{\partial x_{j}} (\frac{v_{t}}{σ_{k}} \frac{\partial k}{\partial x_{j}}) + v_{t} (\frac{\partial U_{i}}{\partial x_{j}} + \frac{\partial U_{j}}{\partial x_{i}}) \frac{\partial U_{i}}{\partial x_{j}} - ε

U_{j} \frac{\partial ε}{\partial x_{j}} = \frac{\partial}{\partial x_{j}} (\frac{v_{t}}{σ_{k}} \frac{\partial k}{\partial x_{j}}) + \frac{ε}{k} [C_{ε 1} v_{t} (\frac{\partial U_{i}}{\partial x_{j}} + \frac{\partial U_{j}}{\partial x_{i}}) \frac{\partial U_{i}}{\partial x_{j}} - C_{ε 2} ε]

…”

Section: Deposition Mechanism and Mathematical Modelmentioning

confidence: 99%

“…In the simulation, kinetic energy of turbulence (k) and turbulent dissipation energy (ε) are used to restrict turbulent fluctuation 26,27 and are shown as follows:…”

Section: Model Of Fluid Phasementioning

confidence: 99%

Analysis of particle deposition in a new‐type rectifying plate system during shale gas extraction

Peng

Chen

Zheng³

et al. 2019

Energy Science & Engineering

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“…According to the heat transfer calculation process of the dry air cooler shown in Figure 2, the calculation formulas [28][29][30] of each variable are listed in Equations (1)(2)(3)(4)(5)(6)(7).…”

Section: Mathematical Modelmentioning

confidence: 99%

“…In the course of long-distance transportation, natural gas needs to be pressurized by compressors along the route. 1,2 The temperature of natural gas increases after being pressurized by the compressor unit, which causes the frictional resistance of the natural gas pipeline to increase, 3 and the operating noise increases, 4 further enhancing the booster compressor unit energy consumption, so the air cooler is often arranged at the compressor outlet of the compressor station to reduce the natural gas temperature at the compressor outlet. 5 An on-site image of an air cooler is shown in Figure 1A.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and simplified calculation method for heat exchange performance of dry air cooler in natural gas pipeline compressor station

Liu

Guo

et al. 2020

Energy Science & Engineering

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In view of the complicated heat transfer calculation for air coolers and the difficulty of directly calculating the exit temperature of natural gas in a compressor station, taking the dry air cooler of model GP12 × 3-6-258-13.0S-S-23.4/DR-Ia configured in the West-East Natural Gas Pipeline II as an example, a three-dimensional simplified model of the air cooler is established. The model is used to simulate a temperature flow field of a dry air cooler-finned tube based on Fluent flow field analysis software. This paper studies the cooling effect of the dry air cooler-finned tube on high-temperature and high-pressure natural gas at compressor outlet. By comparing and analyzing the relationships among natural gas mass flow, inlet air temperature, inlet natural gas temperature, and outlet natural gas temperature for an air cooler, the formula of temperature drop of dry air cooler to natural gas is fitted, and the fitting formula is verified by field operation data. The results show that the average error between the fitting results and the actual data is less than 1.5%, which proves the correctness of the fitting formula and greatly simplifies the heat transfer calculation process for air coolers. K E Y W O R D Sdry air coolers, finned tube, optimization, outlet natural gas temperature

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“…In recent years, many scholars have studied the flow state of pipelines by using CFD numerical simulation methods, and some scholars have proposed the method of mathematical model prediction for this problem, which provides a new idea for us to solve multiphase flow problems.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the water‐filling process for crude oil pipelines with a large drop in height

Liu

Guo

Wang

et al. 2020

Energy Science & Engineering

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To explore the problem of the slack flow and waterhead having a huge impact on the low point of a pipeline during the water-filling process of a large-drop pipeline, the crossing section of the Nujiang China-Myanmar crude oil pipeline (for which the maximum height difference is 1480 m) is taken as an actual case, and water filling of an oil pipe segment with a large drop is simulated based on an OLGA multiphase flow transient simulation. The maximum velocity, pressure, and corresponding liquid holdup at different low points of the pipeline are studied, and the variations of water flow velocity, pressure, and liquid holdup with time at different low points under different load conditions are obtained. A stress analysis of the pipeline is performed through CAESAR II. The results showed that, when the volume flow rate was 900-2000 m 3 /h, the probability of slug flow in pipe could be reduced by 57%. Meanwhile, the tube pressure fluctuation and damage to the pipeline and equipment are reduced and pipeline transportation efficiency is improved, thereby providing an effective basis for engineering practice.

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Flow field and noise characteristics of manifold in natural gas transportation station

Cited by 68 publications

References 16 publications

Analysis of particle deposition in a new‐type rectifying plate system during shale gas extraction

Analysis of particle deposition in a new‐type rectifying plate system during shale gas extraction

Numerical simulation and simplified calculation method for heat exchange performance of dry air cooler in natural gas pipeline compressor station

Analysis of the water‐filling process for crude oil pipelines with a large drop in height

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