A CFD Simulation on the Performance of Slotted Propeller Design for Various Airfoil Configurations

Mohamed, Wan Ahmad Najmi Wan; Ravindran, Nirresh Prabu; Rajendran, Parvathy

doi:10.37934/cfdl.13.3.4357

Cited by 8 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Reynolds number was range from 5,11x107 to 1,08x108. Reynolds number determines the pattern of fluid flow in different situations, investigated both numerically and experimentally the elbows section's performance affected by Reynolds number [15]. During the simulation, other parameters were kept constant for each tested flow conditions.…”

Section: Resultsmentioning

confidence: 99%

Prediction of Erotion Rate in Two Elbows for Coal-Air Flow Based on Computational Fluid Dynamics Simulation

Triwibowo

Widayanti²,

Rukmanasari³

2022

ARFMTS

View full text Add to dashboard Cite

Corrosion is one of the problems cause the material fail, leaks in the equipment and pipe systems in the industry which caused distrub in productivity of production in industry. There are some ways to prediction erosion in pipes, with the conventional or manual and CFD. CFD is to prediction erosion in turbulent air flows with variations in coal particle size and velocity of flowing air. The results of prediction erotion based on CFD is numerical and graphic, by displayed numerical results into visual results. These results include about the velocity, pressure, and temperature distribution in the air flow. So, CFD can be used to prediction pipe because it has wide coverage and effective in display numerical and visual results. Discreate Phase Model is the model of CFD with a variable stream velocity of 10 m/s, 15 m/s, 20 m/s and a solid loading of 5%, 10%, 15%, 20%, 25%. From the results, the maximum erosion rates increased with increasing sizes of particles and stream velocities. However, the location of the maximum erosion rate in the elbows region was independent on those mentioned parameters.

show abstract

Section: Resultsmentioning

confidence: 99%

Prediction of Erotion Rate in Two Elbows for Coal-Air Flow Based on Computational Fluid Dynamics Simulation

Triwibowo

Widayanti²,

Rukmanasari³

2022

ARFMTS

View full text Add to dashboard Cite

show abstract

“…Most journals studied in this review paper applied the 𝑘 − 𝜀 model and the 𝑘 − 𝜔 model due to its aerodynamic and airflow concepts. The 𝑘 − 𝜀 model is preferred when a study involves with free-shear layers and wake field whilst the 𝑘 − 𝜔 model is suitable to provides more accurate solutions in the near wall boundary regions [46][47][48][49].…”

Section: Computational Fluid Dynamics (Cfd)mentioning

confidence: 99%

A Review of Aerodynamics Influence on Various Car Model Geometry through CFD Techniques

Kamal

Ishak

Darlis

et al. 2021

ARFMTS

View full text Add to dashboard Cite

The aerodynamic characteristics of a vehicle play a vital role in steering stability, performance, comfort, and safety of a car. The fuel efficiency of a vehicle is determined by the performance of the internal combustion engine and the aerodynamic design of the body. One of the most important aspects of automobile design is aerodynamic styling. A vehicle with low drag resistance provides advantages in terms of cost and efficiency. This article will review design characteristics and implementation of various specific reference models on drag issues using Computational Fluid Dynamics (CFD) techniques. The benefits and limitations of these models are analysed, and the validity of results in developing guidelines to improve the performance and stability of cars are described. This review paper covers significant studies that utilise the CFD model and simulation on a simplified vehicle model using various turbulence models to generate drag coefficient. Characteristics and impacts of various vehicle design models with and without external factors such as side mirrors and door handles are also discussed. Results obtained from the research focuses on the physics flow structures such as static pressure contours, are presented for the three types of car model geometry. The simplified generic models are more efficient and advocated to apply compared to the specific model geometry based on the result acquired by the latest studies. Simplified generic models are preferred due to their cost-effectiveness, procurement of optimum time, and better simulation effects. Moreover, the study also demonstrates the importance of having a car with suitable turbulence models that are appropriate to be applied for simulations in terms of its applicability, time effectiveness, and cost.

show abstract

“…Moreover, CFD methods also provide more in-depth flow field analysis, offering robust support for the optimization of the lift system in eVTOL vehicles. Mohamed [17] conducted a study on the slotted propeller design for different airfoils using the MRF method in CFD to improve the aerodynamic performance of small propellers. Dubbioso [18] assessed the performance of marine propellers under off-design conditions, focusing on hydrodynamic loads and pressure distribution on the blades.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic Performance and Numerical Analysis of the Coaxial Contra-Rotating Propeller Lift System in eVTOL Vehicles

Xu,

Yu,

et al. 2024

Mathematics

View full text Add to dashboard Cite

Electric vertical takeoff and landing (eVTOL) vehicles possess high payload transportation capabilities and compact design features. The traditional method of increasing propeller size to cope with high payload is no longer applicable. Therefore, this study proposes the use of coaxial counter-rotating propellers as the lift system for eVTOL vehicles, consisting of two coaxially mounted, counter-rotating bi-blade propellers. However, if the lift of a single rotating propeller is linearly increased without considering the lift loss caused by the downwash airflow generated by the upper propeller and the torque effect of the lift system, it will significantly impact performance optimization and safety in the eVTOL vehicles design process. To address this issue, this study employed the Moving Reference Frame (MRF) method within Computational Fluid Dynamics (CFD) technology to simulate the lift system, conducting a detailed analysis of the impact of the upper propeller’s downwash flow on the aerodynamic performance of the lower propeller. In addition, the aerodynamic performance indicators of coaxial counter-rotating propellers were quantitatively analyzed under different speed conditions. The results indicated significant lift losses within the coaxial contra-rotating propeller system, which were particularly notable in the lift loss of the lower propeller. Moreover, the total torque decreased by more than 93.8%, and the torque was not completely offset; there was still a small torsional effect in the coaxial counter-rotating propellers. The virtual testing method of this study not only saves a significant amount of time and money but also serves as a vital reference in the design process of eVTOL vehicles.

show abstract

A CFD Simulation on the Performance of Slotted Propeller Design for Various Airfoil Configurations

Cited by 8 publications

References 26 publications

Prediction of Erotion Rate in Two Elbows for Coal-Air Flow Based on Computational Fluid Dynamics Simulation

Prediction of Erotion Rate in Two Elbows for Coal-Air Flow Based on Computational Fluid Dynamics Simulation

A Review of Aerodynamics Influence on Various Car Model Geometry through CFD Techniques

Aerodynamic Performance and Numerical Analysis of the Coaxial Contra-Rotating Propeller Lift System in eVTOL Vehicles

Contact Info

Product

Resources

About