Isothermal Transport (Core-Flow Type) of Heavy and Ultraviscous Oil in Curved Pipes: A Transient Study by CFD

Silva, Bruno Ferreira; Magalhães, Hortência Luma Fernandes; Gomez, Ricardo S.; Cabral, Endyara de Morais; Batista, Francisco Alves; Pereira, Adriana Barbosa da Costa; Lima, Wanderson Magno Paiva Barbosa de; Lima, Antônio Gilson Barbosa de

doi:10.4236/ojfd.2020.102008

Cited by 3 publications

(3 citation statements)

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“…One of the features that makes CAF attractive is its ability to reduce pressure drop by more than 90%. The findings obtained in this study are comparable to those reported in previous works conducted by Peysson et al (2007), Silva et al (2020), andBensakhria et al (2004), wherein pressure drop reduction of over 95% was observed as the most favourable outcome.…”

Section: Quantitative Evaluation Of Energy Savingssupporting

confidence: 91%

“…The quantification of energy savings is achieved through the utilization of parameters such as power consumption and pressure drop. Prior research has employed the power consumption reduction factor (𝑓ψ), the reduction in pressure gradient (P * ), and the reduction factor in pressure drop (𝑓∆P) as indicators for assessing the energy efficiency of the CAF system (Coelho et al, 2020;Peysson et al, 2007;Silva et al, 2020;J. Sun et al, 2022).…”

Section: Quantitative Evaluation Of Energy Savingsmentioning

confidence: 99%

“…Several studies have reported that the utilization of water (annulus fluid) as a lubricant for oil (core fluid) can result in a significant reduction in energy consumption during oil transportation (Bensakhria et al, 2004;Coelho et al, 2020;Jing et al, 2021;McKibben et al, 2000;Peysson et al, 2007;Silva et al, 2020;Strazza et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Application of core annular flow for oil transportation in different pipe configurations using computational fluid dynamics

Dianita

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The application of Core Annular Flow (CAF) has become an interesting solution in transporting heavy oil through pipeline because of its energy reduction and cost efficiency. Current study conducted a 3D computational fluid dynamic (CFD) to simulate CAF of oil-water in horizontal T- and Y-pipe junctions with two types of oil characteristic i.e., oil as Newtonian fluid and oil as non-Newtonian Carreau Fluid. The 2k factorial statistical experimental design was applied to investigate the effect of geometry on the flow performance. Eight cases were run with different diameter combinations and junction angle. The most attractive design was measured by the high value of oil holdup with small average values of pressure gradient and pressure standard deviation. The simulation result showed the stable CAF along the upstream region but then broke up when passing the intersection. A strategy to recover the stability of CAF after passing the intersection area of a T-pipe without interrupting the flow process was also proposed specifically for T50-50 (T-pipe with inlet and outlet diameter of 50 mm) as the most desired design for water-oil as non-Newtonian Carreau Fluid case. An additional water insertion was introduced at the intersection point to support the recovery of CAF structure by suppressing fouling. The proposed design showed significant improvement of CAF consistency for downstream region until pipe outlets. Energy evaluation was also has been conducted and it was estimated that CAF in T50-50 was able to reduce the pressure drop to more than 90% compared to transportation without lubrication.� In addition, the cost of power consumption can be saved to more than 80% than single phase oil transportation. A scaled-up pipe size simulation was also completed to 10 times bigger dimension. More consistence result of lubricated flow was shown by bigger dimension pipe. �

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Section: Quantitative Evaluation Of Energy Savingssupporting

confidence: 91%

Section: Quantitative Evaluation Of Energy Savingsmentioning

confidence: 99%

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Application of core annular flow for oil transportation in different pipe configurations using computational fluid dynamics

Dianita

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Recovery of core annular flow structure in a horizontal T-pipe using CFD approach

Dianita

Piemjaiswang

Chalermsinsuwan

2023

Alexandria Engineering Journal

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Modelagem e simulação de escoamento anular de água, óleo pesado e ar em dutos horizontais

Nunes

Brito

Neto

et al. 2020

RSD

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Este artigo tem como objetivo estudar o escoamento trifásico água – óleo pesado – ar em dutos horizontais, utilizando a técnica “core annular flow”. O modelo matemático utilizado foi o não-homogêneo, numa abordagem Euleriana – Euleriana. Considerou-se o modelo de mistura para tratar os termos de transferência de momento interfacial entre as fases contínuas (água e óleo pesado) e o modelo de partícula para tratar os termos de transferência de momento interfacial entre as fases dispersa e contínua (ar e óleo pesado). Todas as simulações foram realizadas utilizando o Software CFX versão 11. Resultados dos campos de pressão e fração volumétrica das fases e queda de pressão no duto são apresentados e comparados com dados experimentais. Verificou-se que a modelagem matemática utilizada foi adequada, apresentado erro máximo com relação aos dados experimentais de queda de pressão de 7,3%, demonstrando a eficiência da técnica core-flow para o transporte trifásico de água - óleo pesado – ar.

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Isothermal Transport (Core-Flow Type) of Heavy and Ultraviscous Oil in Curved Pipes: A Transient Study by CFD

Cited by 3 publications

References 20 publications

Application of core annular flow for oil transportation in different pipe configurations using computational fluid dynamics

Application of core annular flow for oil transportation in different pipe configurations using computational fluid dynamics

Recovery of core annular flow structure in a horizontal T-pipe using CFD approach

Modelagem e simulação de escoamento anular de água, óleo pesado e ar em dutos horizontais

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