Investigation of asphaltene deposition under dynamic flow conditions

Salimi, Farhad; Salimi, Javad; Abdollahifar, Mozaffar

doi:10.1007/s12182-016-0080-y

Cited by 26 publications

(6 citation statements)

References 37 publications

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“…All branches of sport have a unique set of specialized biomotor performance requirements. However, in addition to performance indicators such as strength [4], power [5], flexibility [6], endurance [7] and agility [8] among the factors that have a positive effect on the performance of athletes, physical structure is also considered as one of the elements for high performance [9]. It can be mentioned that the body type of elite or successful athletes competing in a particular sport has features that can provide a template in terms of current performance parameters.…”

Section: Introductionmentioning

confidence: 99%

The effect of somatotype characters on selected physical performance parameters

Çınarlı

Kafkas

2019

PES

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Background and Study Aim: The physical structure is considered as one of the elements for sporting success. The aim of this study was to investigate the effects of somatotype characters on selected physical performance parameters. Material and Methods: This study was included 150 males (age: 22.10±2.46 years) participants who do not have habit of regular exercise. The somatotype characters of participants were determined and physical performance tests (30 m sprint, vertical jump, anaerobic power, aerobic capacity, and flexibility) were measured as an experimental design. Results: As a result of the research, 9 different somatotype subgroups were identified. In this study, the statistically significant was found between groups in terms of explosive force, aerobic and anaerobic power output (p<0.05). We found no significant between groups in terms of flexibility (p=0.670), relative anaerobic peak (p=0.560) and mean power output (p=0.077). The results were obtained in favor of mesomorph-endomorph structure in terms of absolute peak and mean power, while mesomorph and ectomorph component contributed positively to explosive force and aerobic capacity scores.Conclusion: Our study highlighted the fact that the subgroups of somatotype have an effect on performance parameters. The body-performance relationship can be examined in detail with more participants representing each somatotype group.

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Section: Introductionmentioning

confidence: 99%

The effect of somatotype characters on selected physical performance parameters

Çınarlı

Kafkas

2019

PES

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“…Among L‐bend, V‐bend, and U‐bend serpentine channels and under the same physical conditions, the U‐bend serpentine channel has the lowest pressure drop and the best hydraulic performance. [ 34 ] For this reason, adding TTI to it produces a lower pressure drop than other types of serpentine channels. On the other hand, due to the centrifugal flow in the curved parts, it has better thermal performance than the straight channel.…”

Section: Resultsmentioning

confidence: 99%

Heat transfer enhancement of serpentine channels with twisted tape insert by computational fluid dynamics and artificial intelligence

Salimi,

Mozoun,

Beigzadeh

2023

Can J Chem Eng

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Improving the thermal–hydraulic performance of heat exchangers is a critical challenge. In this study, we investigated the impact of twisted tape insert geometrical variables, namely pitch length (P) and diameter (W), on the Nusselt number (Nu) and friction factor (f) within serpentine channels. To accomplish this, we employed computational fluid dynamics (CFD) as our simulation technique, with water as the working fluid. The validity of the CFD data was confirmed, leading to the development of artificial intelligence (AI) subsets: artificial neural network (ANN) and genetic algorithm (GA). In the prediction models, the following input variables were considered: Reynolds number (Re), (P/Dh), and (W/Dh). The ANN and GA models achieved a mean relative error (MRE) of 0.125% and 1.326% for Nu, and 0.139% and 4.104% for f, respectively. These results demonstrate the high accuracy of the correlations, with the ANN model showcasing superior performance.

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“…Several large-scale flow loop apparatuses have been used to study asphaltene deposition and screen asphaltene inhibitors under conditions closer to the field applications. ,− The effect of a higher shear rate on the magnitude of asphaltene deposition can be better investigated in such devices. Moreover, most of these flow loops can be operated at high-pressure and high-temperature conditions.…”

Section: Test Methods For Asphaltene Inhibitorsmentioning

confidence: 99%

Review of the Current Laboratory Methods To Select Asphaltene Inhibitors

Enayat¹,

Tavakkoli²,

Yen³

et al. 2020

Energy Fuels

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Asphaltene deposition is a long-standing problem that threatens the uninterrupted production of crude oil. Unlike other flow assurance problems, downhole asphaltene deposition is not well-understood partly as a result of the complexity and diversity of the asphaltene chemical structure. Continuous downhole asphaltene inhibitor injection is one of the preventive strategies used to mitigate the asphaltene deposition problem. Such chemicals that are injected in low dosage are screened in the laboratory before field implementation. Over the last 20 years, various asphaltene testing methods have been proposed for product selection and research and development. Still, the lack of lab to field correlation remains a challenge for the operators, service providers, and chemical companies. Therefore, the search for robust, rapid, and reproducible lab screening methods for asphaltene inhibitors is ongoing. This review summarizes lab evaluation techniques adopted by different researchers, their governing principles, and the pros and cons. It may serve as a guide for adopting appropriate strategies and pursuing further investigations on the lessons learned. The hope is that, with a more in-depth understanding of the current methodologies, a better workflow can be designed to select the proper asphaltene control products for field implementation.

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Investigation of asphaltene deposition under dynamic flow conditions

Cited by 26 publications

References 37 publications

The effect of somatotype characters on selected physical performance parameters

The effect of somatotype characters on selected physical performance parameters

Heat transfer enhancement of serpentine channels with twisted tape insert by computational fluid dynamics and artificial intelligence

Review of the Current Laboratory Methods To Select Asphaltene Inhibitors

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