Analysis Of the Effect of Flow Rate and Speed on Four Blade Tubular Water Bulb-Turbine Efficiency Using Numerical Flow Simulation

Darsono, Febri Budi; Widodo, Rahmad Doni; Rusiyanto,; Nurdin, Akhmad

doi:10.37934/arfmts.90.2.18

Cited by 6 publications

(7 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…( 2) models the Reynolds stress using the Explicit Algebraic Stress Model (EASM). The scientific foundation and specific derivation of the EASM can be found in previous studies [15][16]. The final outcome of the Algebraic Reynolds Stress Model for twodimensional flow is briefly summarized here for clarity.…”

Section: Numerical Simulationmentioning

confidence: 99%

“…However, implementing these solutions may be challenging for retrofitting purposes, as they involve significant modifications to the hull, rudder, or the addition of stator fins [13][14][15][16]. Instead, an alternative ESD can be considered, which allows for compliance with the Energy Efficiency Operation Index (EEOI) requirements without extensive modifications.…”

Section: Introductionmentioning

confidence: 99%

“…Previous CFD research has shown that open propellers, particularly the B-Series, perform well with PBCF [7]. In this study, CFD analysis was conducted to assess the hydrodynamic performance of propellers, considering turbulent parameters [16] and the influence of flow rate [17]. The investigation focused on combining PBCF propeller types after studying the performance of open propellers (B-Series and Kaplan).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence Evaluation of Open Propellers with Boss Cap Fins: Case Studies on Types B4-70 and Ka4-70

Berlian Arswendo Adietya,

Husein Syahab,

Mahendra Indiaryanto

et al. 2024

CFDL

View full text Add to dashboard Cite

Numerical analysis of fins effect on propeller performance was conducted, specifically using the B4-70 and Ka4-70 propellers. The study investigated different types of fins, including bare fins and PBCF (Propeller Boss Cap Fins) using computational fluid dynamics (CFD) simulations. The explicit algebraic stress model (EASM) based on Reynolds-Averaged Navier-Stokes (RANS) equations and turbulence modeling was employed to determine the optimal results. The main objective of this research was to enhance energy efficiency in ships by examining various open propeller configurations. The CFD simulation results for open propellers B4-70 and Ka4-70, with the addition of boss cap fins, revealed interesting phenomena. When the open propellers B4-70 and Ka4-70 were equipped with PBCF, they would experience an increase in efficiency (η0). This was because the performance of the fins functioned optimally when the advance ratio (J) is high, as evident from the high velocity values. Thus, with higher velocity and lower pressure in the boss cap region at high J values, there was an elevation in thrust force due to the reduction of hub vortex. In the case of open propeller B4-70 with added PBCF, there was an increase in the efficiency value (η0) ranging from 3% to 5% when J varied from 0 to 0.7. Similarly, for propeller Ka4-70 with the addition of PBCF, there was an increase in the efficiency value (η0) ranging from 1% to 3% when J varied from 0 to 0.7. Notably, the use of an Energy-Saving Device (ESD) in the form of PBCF can increase the efficiency of ship propeller, as reported in this paper. Consequently, these findings affirmed the reliability of the overall calculations using the CFD approach.

show abstract

Section: Numerical Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence Evaluation of Open Propellers with Boss Cap Fins: Case Studies on Types B4-70 and Ka4-70

Berlian Arswendo Adietya,

Husein Syahab,

Mahendra Indiaryanto

et al. 2024

CFDL

View full text Add to dashboard Cite

show abstract

“…This is substantiated by Darsono et al, who employed CFD techniques to assess the effectiveness with regard to a water bulb-turbine in a water conduit system, examining how flow rate and velocity affect its efficiency. The findings indicate a positive correlation between flow rate and efficiency, whereby efficiency consistently rises as flow rate increases [26]. In a different study, Kamal & Saini explore the performance of a hydrokinetic turbine, focusing on its modifications and enhancements.…”

Section: Literature Reviewmentioning

confidence: 99%

Systematic Review of Computational Fluid Dynamics Modelling and Simulation Techniques Employed in Vertical Axis Hydrokinetic Turbines

Muhyiddin Mohammed,

Shamsul Sarip,

Sa’ardin Abdul Aziz

et al. 2024

ARAM

View full text Add to dashboard Cite

At present, Computational Fluid Dynamics (CFD) is being utilized to explore tidal and hydrokinetic turbine systems, advancing comprehension of turbulent flow phenomena and raising the accuracy of performance predictions for these fluid-driven turbines. Consequently, this utilization of CFD contributes to the optimization of efficiency in these devices. Turbines are subject to variations from the best design point due to the influence of fluctuating flow rates, despite the findings of recent research that have identified the ideal design points. In contrast to conventional literature reviews, systematic analysis offers numerous advantages. The methodological strategy applied in this study entailed cross-referencing the findings obtained from Web of Science (WOS) and Scopus databases to establish the comprehensiveness as well as reliability of researcher data. Improving the review process, elevating the prominence of the field of study, and establishing critical priorities to mitigate research bias are all potential strategies for enhancing the quality of these evaluations. This research divides its findings into three core themes: (1) Performance assessment for practical implications, (2) Numerical analysis for theoretical insights, and (3) Design parameter optimization for engineering relevance. These themes collectively provide a well-rounded examination of the research outcomes across practical, theoretical, and engineering dimensions. Finally, the research findings have the potential to act as a significant point of reference for informing the best design considerations pertaining to vertical axis turbines.

show abstract

“…However, this figure did not factor in the efficiency of the turbine. If the bulb turbine were operating at a maximum efficiency of 95%, then a theoretical average of 284 (0.95 times 299) kilowatts could be generated (Darsono et al, 2022). But as was mentioned above with the efficiency curves, the flow at the plant is highly variable, and thus the actual flow rate will almost never be at the turbine's exact rated flow, and the turbine will almost never be running at maximum efficiency.…”

Section: Efficiency Analysismentioning

confidence: 99%

Potential for Conduit Hydropower at NYC's Newtown Creek Wastewater Treatment Plant

Davidoff,

Ramamurthy

2023

J Stud Res

View full text Add to dashboard Cite

The Newtown Creek facility is New York City's largest wastewater treatment plant, with the capacity to treat up to 2.65 billion liters of combined sewage (rainfall and raw sewage) each day. After treatment at the plant, clean water flows out to the nearby East River via an outfall pipe. On average, the plant treats 810 million liters of combined sewage per day, which means there is potential to extract significant amounts of energy from the water flowing through the outfall. This paper first verifies that hydropower is a viable option at the plant by calculating the theoretical amount of power available from the running water, then determines what type of turbine would be the most appropriate for the outfall, and finally calculates how much electricity could realistically be generated by a turbine in the outfall. The bulb turbine was identified as the most appropriate type of turbine, and it was approximated that a bulb turbine in the outfall could produce, on average, 263 kilowatts of power. Considering that the plant runs year-round, a total of 2.24 gigawatt hours of clean electricity could be generated annually, which could be used to help power the energy-intensive wastewater treatment process or be fed back into New York City's electrical grid, where it could power up to 211 homes annually.

show abstract

Analysis Of the Effect of Flow Rate and Speed on Four Blade Tubular Water Bulb-Turbine Efficiency Using Numerical Flow Simulation

Cited by 6 publications

References 13 publications

Influence Evaluation of Open Propellers with Boss Cap Fins: Case Studies on Types B4-70 and Ka4-70

Influence Evaluation of Open Propellers with Boss Cap Fins: Case Studies on Types B4-70 and Ka4-70

Systematic Review of Computational Fluid Dynamics Modelling and Simulation Techniques Employed in Vertical Axis Hydrokinetic Turbines

Potential for Conduit Hydropower at NYC's Newtown Creek Wastewater Treatment Plant

Contact Info

Product

Resources

About