Effect of Active Control by Blowing to Aerodynamic Drag of Bluff Body Van Model

Harinaldi,; Budiarso,; Tarakka, Rustan; Simanungkalit, Sabar Pangihutan

doi:10.1615/interjfluidmechres.v40.i4.20

Cited by 6 publications

(6 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The increasing of pressure coefficient on rear parts of vehicle models can decrease the aerodynamic drag. Results obtained from the research have confirmed the results of other researchers [16,18,23,26,27] where the application of active control by blowing can reduce aerodynamic drag on vehicle models. Table 6 presents the aerodynamic drag coefficients obtained from experimental method on three vehicle models, which have similar geometric parameters to the model used for computational method.…”

Section: The Computational Methodssupporting

confidence: 86%

“…The study investigates drag reduction occurring in a bluff body of van model adapted from Ahmed model, in which flow streams in reversed direction from the original model or in other names, reversed Ahmed model [23,[25][26][27][28]. The van model was equipped with an active control by applying blowing techniques.…”

Section: Methodsmentioning

confidence: 99%

“…Krentel et al modeled a predictive closed-loop actuation approach for one steady blowing excitation configuration [16]. Harinaldi et al [23] used a modified or reversed Ahmed body equipped with active flow control by blowing and found that the drag reductions achieved by computational and experimental methods were 13.92% and 11.11%. A review has also been elaborated for methods for the application of flow control on a square back car model [24].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of blowing flow control and front geometry towards the reduction of aerodynamic drag on vehicle models

Tarakka¹,

Salam²,

Jalaluddin³

et al. 2019

FME Transactions

Self Cite

View full text Add to dashboard Cite

This paper presents analyses of the effect of blowing flow control and variations on front geometry towards the reduction of aerodynamic drag on vehicle models. Blowing flow control is an alternative measure in modifying the onset of flow separation in the boundary layer on the surface of the vehicle. The modification is expected to reduce the dominating influence of the separation area on the total drag. Conducted in computational and experimental approaches, the research investigated the effect of frontal slant angle variations (θ) of 25°, 30° and 35° towards the reduction of aerodynamic drag on vehicle models on the application of blowing flow control with upstream and blowing speed of 16.7 m/s and 0.5 m/s, respectively. Load cells were used in the experimental method to validate the reduction of aerodynamic drag obtained from computational method. It is indicated that the effects of blowing flow control and variations on front geometry are significant in the increasing on pressure coefficients and the reduction of aerodynamic drag on vehicle models. The largest increase on pressure coefficients of 38.93% is indicated on the vehicle model with θ=35°, while the largest reduction of aerodynamic drag occurred on the same model with the values of 14.81 and 12.54 for computational and experimental methods, respectively.

show abstract

Section: The Computational Methodssupporting

confidence: 86%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of blowing flow control and front geometry towards the reduction of aerodynamic drag on vehicle models

Tarakka¹,

Salam²,

Jalaluddin³

et al. 2019

FME Transactions

Self Cite

View full text Add to dashboard Cite

show abstract

“…One of the CFD software that is commonly used to modeling the particle flow is ANSYS Fluent. The software performs rather well when generating crucial forecasts [10]. Therefore, Ansys Fluent was used in the present study.…”

Section: Ansys Fluentmentioning

confidence: 99%

Application of CFD Simulation to Determine the Optimal Horizontal Position of the Nozzle Inlet of a Propeller Flow Cooling System (PFCS)

Faisal Mahmuddin,

Muhammad Iqshal Naitullah Jasman,

Syerly Klara

et al. 2023

CFDL

View full text Add to dashboard Cite

Research on the use of fluid flow caused by the propeller to be used for engine cooling is an interesting research topic. The system is known as the Propeller Flow Cooling System (PFCS). It is necessary to develop the most optimal position to produce maximum water discharge in this system. This research carried out simulation and analysis with an elliptical inlet nozzle as the utilization of the stern flow of the ship. This study aims to determine the difference in the volume of water generated from several horizontal positions of the nozzle inlet. In this study, the simulated horizontal distance of the inlet nozzle to the propeller at 0.7R propeller blade that is, 5 cm, 7.5 cm, 10 cm, 12.5 cm, 15 cm and using the computational dynamic fluid (CFD) method to analyze the optimal horizontal distance of the inlet nozzle which produces the highest water flow rate. Based on the research result, it was shown that the optimal horizontal distance of the inlet nozzle to the propeller is a distance of 7.5 cm. The water flow generated in the computational simulation in this case was 14.24 liters/minute. In that case, it can be concluded that the effect of the horizontal distance of the inlet nozzle on the propeller greatly affects the flow of water produced.

show abstract

“…Fenomena lain juga terlihat dari hilangnya area resirkulasi yang terbentuk dan reduksi hambatan aerodinamika sebesar 10%. Penelitian juga telah dilakukan dengan menerapkan penambahan kontrol aktif blowing di area belakang pada reversed Ahmed model yang memiliki sudut kemiringan 35 0 di bagian depan dapat menaikkan koefisien tekanan sampai 34.1% (Harinaldi et al, 2013). Sementara, Tarakka et al, (2019)…”

Section: Pendahuluanunclassified

Kajian Komputasi Pengaruh Penerapan Blowing pada Bagian Belakang Model Kendaraan

Tarakka

Salam

Mochtar

et al. 2022

View full text Add to dashboard Cite

Drag aerodinamika pada kendaraan disebabkan adanya tekanan rendah dan separasi aliran di bagian belakang, yang berdampak pada menurunnya kecepatan, meningkatnya penggunaan bahan bakar, dan turunnya efisiensi kendaraan. Blowing merupakan salah satu pilihan rekayasa kendali aktif aliran yang dapat diterapkan pada desain kendaraan yang dapat mengendalikan pembentukan separasi aliran dan berefek positif berupa pengurangan hambatan aerodinamis. Penelitian ini bertujuan menganalisis pengaruh penerapan blowing terhadap pola aliran, distribusi tekanan, dan hambatan aerodinamika yang bekerja pada bagian belakang model. Dengan bantuan CFD Fluent 6.3, model uji yang digunakan adalah model kendaraan dengan sudut kemiringan geometri depan (α) 35o dan rasio terhadap model Ahmed bodi original adalah 0.17 (1:6), yang dilengkapi dengan blowing dengan kecepatan 1.0 m/s. Hasil komputasi mengindikasikan bahwa penerapan blowing dapat mengurangi pembentukan wake dan menunda separasi aliran dan dapat meningkatkan koefisien tekanan minimum pada bagian belakang model kendaraan sebesar 24.690%. Pengurangan hambatan aerodinamika diperoleh sebesar 9.583%.

show abstract

Effect of Active Control by Blowing to Aerodynamic Drag of Bluff Body Van Model

Cited by 6 publications

References 11 publications

Effect of blowing flow control and front geometry towards the reduction of aerodynamic drag on vehicle models

Effect of blowing flow control and front geometry towards the reduction of aerodynamic drag on vehicle models

Application of CFD Simulation to Determine the Optimal Horizontal Position of the Nozzle Inlet of a Propeller Flow Cooling System (PFCS)

Kajian Komputasi Pengaruh Penerapan Blowing pada Bagian Belakang Model Kendaraan

Contact Info

Product

Resources

About