Flow Patterns of Oil-Gas and Pressure Gradients in Near-Horizontal Flow Pipeline: Experimental Investigation Using Differential Pressure Transducers

Musa, Veyan A.; Mahmood, Raid Ahmed; Khalifa, Shwan M. Noori; Ali, Omar Mohammed; Abdulkareem, Lokman A.

doi:10.18280/ijht.390233

Cited by 4 publications

(3 citation statements)

References 18 publications

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“…Since in the upstream, there are bent sections with complex shapes and structures, plus the influence of the bridge piers, when water flows into the weir mouth, the width of the overflow section near the bridge pier is smaller than the width of the weir, which increases the local head loss and reduces the overflow capacity of the weir at the same time, causing the phenomenon of side contraction, so when calculating the flow rate, the influence of side contraction should be taken into consideration, and the relationship between water level and water flow is quite complicated. The effect of side contraction could be described by the contraction coefficient, then the water flow of nonflooded wide-roof weir without side contraction is [19,20]:…”

Section: Relationship Between Water Level and Water Flowmentioning

confidence: 99%

Numerical Simulation of the Hydraulic Performance of Spillway of Goushuipo Reservoir

Zhao¹,

Zhao²,

Li³

et al. 2022

IJHT

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Spillway is an important flood control facility for hydraulic architectures, whether the design and layout of the spillway are reasonable or not can directly affect the safety of hydraulic architectures and the investment of the entire project. To discuss the rationality of the designed reinforcement scheme for spillway of Goushuipo Reservoir in China, this paper employed the Computational Fluid Dynamics (CFD) methods, Volume of Fluid (VOF) model and Re-Normalization Group (RNG) model to simulate the water surface line of spillway under different verified flood standard conditions based on the measured data of water surface line of spillway of the Goushuipo Reservoir. By comparing with the test values, it’s verified that the simulation results are of high accuracy; then on this basis, this paper analyzed the relationship between water level and water flow of spillway under different conditions and other hydraulic performance such as the water flow state. Moreover, according to the simulation results, this paper analyzed the problems with the original design scheme and further proposed an optimized scheme: the two-step water-drop energy dissipation scheme for the Goushuipo Reservoir, and performed numerical simulation on the optimized scheme. At last, the simulation results proved the rationality of the optimized scheme, and the research findings of this paper provide useful references for the reinforcement project of the target reservoir in the future.

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Section: Relationship Between Water Level and Water Flowmentioning

confidence: 99%

Numerical Simulation of the Hydraulic Performance of Spillway of Goushuipo Reservoir

Zhao¹,

Zhao²,

Li³

et al. 2022

IJHT

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“…The validation of using DPT is investigated by Musa et al [17] in a pipe of an internal diameter of 50 mm with different directions; 0, 30, and 45 degrees, they denoted that the pressure in the tested pipe is dropping with the increasing of the void fraction's ratio, also the usage of DPT as a sensor for indicating flow patterns is acceptable with 30-and 45-degrees pipe orientations. The two-phase flow has been investigated experimentally by the authors in [18], [19].…”

Section: Related Workmentioning

confidence: 99%

Investigation in Gas-Oil Two-Phase Flow using a Differential Pressure Transducer and Wire Mesh Sensor in Vertical Pipes

Musa

Mahmood

Simo

et al. 2022

EMITTER Int'l J. of Engin. Technol.

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The current study is performed to identify the flow regimes of oil-gas two-phase flow experimentally in a vertical pipe has an internal diameter of 6.7 cm. It also aims to provide more details about the possibility of using Differential Pressure Transducers (DPT) for indicating flow patterns. A flow development of oil and gas has been investigated in a vertical pipe of 6 m in length and operated at atmospheric pressure. A series of experiments have been run to cover a range of inlet oil superficial velocities from 0.262 to 0.419 m/s, and inlet gas superficial velocities from 0.05 to 4.7 m/s. Wire Mesh Sensors (WMS) have been used to collect the obtained void fraction values of the flow. The Differential Pressure Transducer (DPT) is utilized to measure the pressure drop values of a one-meter along the pipe. The flow patterns are classified according to the analysis of void fractions, pressure gradients regarding time series, tomographic images, probability density functions of the void fractions, and pressure gradients. A bubbly flow is observed at low superficial velocities of gas and liquid, slug flow is observed at the lower flow rate of liquid and moderate flow rates of gas, while the churn flow pattern is recognized at the higher rates of liquid and gas. Also, the result has revealed the possibility of using Differential Pressure Transducers (DPT) to classify the gas-oil flow patterns in vertical pipes.

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“…Hence, it is essential to understand the heat transfer process and its thermal performance. Generally, many studies have considered and investigated the two-phase flow in different geometries and different orientations using different approaches such as [3][4][5][6][7][8]. Basically, the heat transfer coefficient and temperature distribution inside the tube are the main parameters that need to be considered.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Coolant Side Characteristic on the Performance of Air-Cooled Condenser Structured by Horizontal Flattened Tube

Kamil¹,

Kassim²,

Mahmood³

2022

IJHT

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The steam condensation process has been experimentally investigated in an air-cooled condenser (ACC). The ACC has been designed and built using a flattened cross-section horizontal tube. The flattened tube has an internal dimension of 102 mm x 12 mm with 4030 mm length. A range of vacuum operating conditions are applied to operate the ACC. In the experiments, parameters such as vacuum pressure, saturated temperature, wall tube temperature, rate of heat transfer, and local average steam heat transfer coefficient have been considered along the flow direction with the variation of cooling water temperature. The experimental results revealed that the steam saturated temperature and the related pressure decrease with the reduction of the cooling water temperature, and the temperatures of the upper and lower parts of the horizontal flattened tube. The results also showed that the local steam condensation heat transfer coefficient decreases along with the direction of the flow, but it there is incrementing with the decreasing of saturated steam temperature at a certain range of cooling water temperature.

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Flow Patterns of Oil-Gas and Pressure Gradients in Near-Horizontal Flow Pipeline: Experimental Investigation Using Differential Pressure Transducers

Cited by 4 publications

References 18 publications

Numerical Simulation of the Hydraulic Performance of Spillway of Goushuipo Reservoir

Numerical Simulation of the Hydraulic Performance of Spillway of Goushuipo Reservoir

Investigation in Gas-Oil Two-Phase Flow using a Differential Pressure Transducer and Wire Mesh Sensor in Vertical Pipes

Experimental Investigation of Coolant Side Characteristic on the Performance of Air-Cooled Condenser Structured by Horizontal Flattened Tube

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