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Journal articles on the topic 'Vortex generator'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

IKEDA, Tadashige. "Smart Vortex Generator." Journal of the Society of Mechanical Engineers 114, no. 1111 (2011): 430–31. http://dx.doi.org/10.1299/jsmemag.114.1111_430.

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2

Shanebrook, J. R., and L. R. Johnson. "Anastomotic vortex generator." Medical and Biological Engineering and Computing 34, no. 3 (1996): 262–65. http://dx.doi.org/10.1007/bf02520085.

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3

Mardikus, Stefan, Claudia Agata Putri, Michael Seen, et al. "The Study of 3D Simulation on Heat Transfer Enhancement on Fin Tube Heat Exchanger Using Delta Wing and Winglet Vortex Generators." International Journal of Applied Sciences and Smart Technologies 6, no. 2 (2024): 429–42. https://doi.org/10.24071/ijasst.v6i2.10467.

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The vortex generator is one of the methods to improve heat transfer augmentation on flow characteristics in the air side of the fin and tube heat exchanger. There are some models of vortex generators to produce longitudinal vortices when the airflow passes the surface of the vortex generator. In the previous studies, the longitudinal vortices were able to reduce the wake region phenomenon behind the tube heat exchanger. This research aims to investigate the thermal performance of heat transfer on the collaboration between two models of vortex generators namely delta wing and winglet vortex gen

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Prafull, Navkar *1 Rushikesh Sable 2. Mayur Satputale. "VORTEX BLADELESS TURBINE GYRO E-GENERATOR." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 7, no. 2 (2018): 189–92. https://doi.org/10.5281/zenodo.1165914.

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Vortex-Bladeless is a Spanish SME whose objective is to develop a new concept of wind turbine without blades called Vortex or vorticity wind turbine. This design represents a new paradigm in wind energy and aims to eliminate or reduce many of the existing problems in conventional generators. The bladeless vortex turbine is one such concept that uses the principle of aero-elasticity and thereby the variations produced by it to generate electricity. Project work will include the design and development of a vortex wind bladeless turbine and a gyro-action based e-generator to be coupled to it to g

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Iokova, I. L., and E. N. Tarasevich. "INVESTIGATION OF THE POSSIBILITY OF USING A VORTEX HEAT GENERATOR IN HEAT SUPPLY SYSTEMS FOR RESIDENTIAL, INDUSTRIAL AND PUBLIC BUILDINGS." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 61, no. 2 (2018): 159–66. http://dx.doi.org/10.21122/1029-7448-2018-61-2-159-166.

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In a number of foreign countries, vortex heat generators have become widespread in decentralized heat supply systems. For Belarus, vortex heat generators are quite new sources of heat supply. The article considers the possibility of using vortex heat generators for heat supply systems for residential, public and industrial buildings. Vortex heat generators are based on the principle of cavitation in a turbulent water flow. For many devices cavitation is not desirable, but in a vortex heat generator it is used as a favorable phenomenon. The authors carried out a series of full-scale experiments

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Prabowo, Petrus Setyo, Stefan Mardikus, and Ewaldus Credo Eukharisto. "Heat Transfer Characteristic on Wing Pairs Vortex Generator using 3D Simulation of Computational Fluid Dynamic." International Journal of Applied Sciences and Smart Technologies 3, no. 2 (2021): 215–24. http://dx.doi.org/10.24071/ijasst.v3i2.3839.

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Vortex generators are addition surface that can increase heat transfer area and change the fluid flow characteristics of the working fluid to increase heat transfer coefficient. The use of vortex generators produces longitudinal vortices that can increase the heat transfer performance because of the low pressure behind vortex generators. This investigation used delta winglet vortex generator that was combined with rectangular vortex generator to Reynold numbers ranging 6,000 to 10,000. The parameters of Nusselt number, friction factor, velocity vector and temperature distribution will be evalu

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Dan Mugisidi and Oktarina Heriyani. "Improving the Performance of a Forced-flow Desalination Unit using a Vortex Generator." CFD Letters 16, no. 10 (2024): 81–93. http://dx.doi.org/10.37934/cfdl.16.10.8193.

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Water is a primary need for living creatures, and water scarcity can trigger a crisis. Water scarcity is becoming an issue in Indonesia, especially in coastal village areas, including salt-producing areas. Salt production involves evaporating large amounts of seawater in concentration ponds. Using evaporated seawater as a source of clean water would reduce the risk of water scarcity. Therefore, this study aims to obtain fresh water by condensing water vapour that evaporates in a desalination unit. More specifically, the study uses a vortex generator to increase the rate and efficiency of evapo

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8

Liu, Guang Yuan, Rui Bo Wang, Chang Rong Zhang, Feng Chen, Jiang Yu Xie, and Shang Ma. "Numerical Investigation on Boundary Layer Flow Control with Vortex Generators." Applied Mechanics and Materials 432 (September 2013): 351–57. http://dx.doi.org/10.4028/www.scientific.net/amm.432.351.

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The numerical simulation method was adopted to analyze the effect on boundary layer thickness reduction of various vortex generator parameters. Results show that vortex generators are capable of reducing boundary layer thickness for about 66 percent, and the influence on centerline Mach number distributions is neglectable. Practicable vortex generators for 2.4m transonic wind tunnel half-model test section side wall are founded. Research results can be used for further applications of vortex generator in wind tunnel tests.

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9

Errasti, Iñigo, Unai Fernández-Gamiz, Pablo Martínez-Filgueira, and Jesús Blanco. "Source Term Modelling of Vane-Type Vortex Generators under Adverse Pressure Gradient in OpenFOAM." Energies 12, no. 4 (2019): 605. http://dx.doi.org/10.3390/en12040605.

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An analysis of the generation of vortices and their effects by vane-type vortex generators (VGs) positioned on a three-dimensional flat plate with a backward-facing ramp and adverse gradient pressure is carried out. The effects of a conventional vortex generator and a sub-boundary layer vortex generator are implemented by using a source term in the corresponding Navier-Stokes equations of momentum and energy according to the so-called jBAY Source Term Model. The influence of the vortex generator onto the computational domain flow is modelled through this source term in the Computational Fluid

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10

Aftab, Syed Mohammed Aminuddin, and P. Srinivasa Murthy. "Comparative Study of Vortex Generator Orientation on Wing Surface Considering Delta Vortex Generators." Applied Mechanics and Materials 225 (November 2012): 79–84. http://dx.doi.org/10.4028/www.scientific.net/amm.225.79.

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Flow over the ONERA M6 wing with vortex generators using more accurate higher order numerical schemes is studied using computational methods. In this paper, the effect of delta vortex generator orientation on the wing and its implication on wing performance is computed more accurately using second order upwinding scheme. Turbulence modeling used is k-omega sst. It has been found that numerical results are comparable and close to the experiment. The analysis results show that the co-rotating clockwise position of vortex generators is more effective than co-rotating (anticlockwise) or counter ro

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11

Tao, Shi-bo, Ai-ping Tang, Da-bo Xin, Ke-tong Liu, and Hong-fu Zhang. "Vortex-Induced Vibration Suppression of a Circular Cylinder with Vortex Generators." Shock and Vibration 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/5298687.

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The vortex-induced vibration is one of the most important factors to make the engineering failure in wind engineering. This paper focuses on the suppression method of vortex-induced vibration that occurs on a circular cylinder fitted with vortex generators, based on the wind tunnel experiment. The effect of the vortex generators is presented with comparisons including the bare cylinder. The experimental results reveal that the vortex generators can efficiently suppress vortex-induced vibration of the circular cylinder. Vortex generator control can make the boundary layer profile fuller and hen

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12

Chai, Lei, and Savvas Tassou. "A Review of Airside Heat Transfer Augmentation with Vortex Generators on Heat Transfer Surface." Energies 11, no. 10 (2018): 2737. http://dx.doi.org/10.3390/en11102737.

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Heat exchanger performance can be improved via the introduction of vortex generators to the airside surface, based on the mechanism that the generated longitudinal vortices can disrupt the boundary layer growth, increase the turbulence intensity and produce secondary fluid flows over the heat transfer surfaces. The key objective of this paper is to provide a critical overview of published works relevant to such heat transfer surfaces. Different types of vortex generator are presented, and key experimental techniques and numerical methodologies are summarized. Flow phenomena associated with vor

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13

Akcayoglu, Azize, and Celal Nazli. "Thermal enhancement of triangular fins based on spanwise distance of vortex generators." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 231, no. 13 (2016): 2554–66. http://dx.doi.org/10.1177/0954406216636917.

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In this study, the influence of spanwise positions of vortex generators on the fin performance is determined numerically by considering global and local flow and heat transfer fields. The vortex generators are located on the inclined surfaces of equilateral triangular fins and the spanwise distances between them are altered as much as possible depending on the extents of the triangular duct. “RNG k-ɛ” turbulence model with “Enhanced wall treatment” option is determined as the best turbulence model to predict the flow fields inside the triangular fins with built-in vortex generators, for Reynol

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Suranto Putro, Setyo Hariyadi, and Ramadhan Pradana Mahaputra. "STUDI EKSPERIMEN PENGARUH PENGGUNAAN VORTEX GENERATOR PADA AIRFOIL NACA 0012 DENGAN SMOKE GENERATOR." Jurnal Penelitian 5, no. 1 (2020): 41–49. http://dx.doi.org/10.46491/jp.v5e1.485.41-49.

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Aerodinamika adalah salah satu cabang dinamika yang berkenaan dengan kajian pergerakan udara, khususnya ketika udara tersebut berinteraksi dengan benda padat. Pada aerodinamika terdapat sebuah airfoil. Untuk meningkatkan kinerja airfoil, pada bagian sayap pesawat dipasang vortex generator. Aliran udara yang mengalir melalui sayap pesawat akan membentuk sebuah airfoil yang bisa menyebabkan pesawat tersebut bisa terbang. Metode yang digunakan pada studi ini adalah simulasi menggunakan terowongan angin (wind tunnel). Yang menghasilkan aliran udara yang membentuk menjadi airfoil dapat terlihat den

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15

Arum, Wahyuni Fajar, and Enggal Fahmi Dzikirillah. "ANALISIS PENGARUH VORTEX GENERATOR TERHADAP ALIRAN UDARA." Teknika STTKD: Jurnal Teknik, Elektronik, Engine 9, no. 1 (2023): 55–64. http://dx.doi.org/10.56521/teknika.v9i1.793.

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Vortex Generator merupakan sebuah benda yang ada diatas wing pesawat yang bertujuan untuk mengurangi turbulensi pada area wing pesawat. Tujuan dari penelitian ini adalah untuk mengetahui karakteristik aerodinamika pada airfoil NACA 2410 tanpa vortex generator, untuk mngetahui karakteristik aerodinamika pada airfoil NACA 2410 dengan vortex generator dan untuk mengetahui pengaruh penamahan vortex generator pada airfoil NACA 2410 dengan cara penelitian Computational Fluid Dynamic (CFD). Metode penelitian yang dilakukan pada penelitian ini yaitu menggunakan metode penelitian Research And Dev

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Yu, S. C. M., L. P. Chua, and E. K. Goh. "The near-field flow characteristics of some wall-mounted mixing tabs." Aeronautical Journal 103, no. 1023 (1999): 253–56. http://dx.doi.org/10.1017/s0001924000027925.

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It is well known that passive vortex generators can be very effective in controlling separation by ‘re-energising’ the low momentum fluids at the boundary layers. They have been used extensively in many practical aerodynamic applications; both in external and internal flows. Typical examples include aerofoil stall alleviation and engine face distortion control in the jet aircraft intake during high angles of incidence. The general flow feature behind a vortex generator is that a pair of contra-rotating streamwise vortices would be formed which will significantly strengthen the flow at the boun

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Dan Mugisidi, Oktarina Heriyani, Pancatatva Hesti Gunawan, and Dwi Apriani. "Performance Improvement of a Forced Draught Cooling Tower Using a Vortex Generator." CFD Letters 13, no. 1 (2021): 45–57. http://dx.doi.org/10.37934/cfdl.13.1.4557.

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Cooling systems using colling towers are often an important element in a production process and always involve water or energy consumption. Therefore, increasing the efficiency of the colling tower will reduce water and / or energy consumption. In order to increase the efficiency of colling tower energy consumption, the most studied part is the fills, where heat transfer occurs. However, there are no studies on the use of vortex generators in colling tower fills. Hence the aim of this study was to evaluate the performance improvement in a forced draught cooling tower using a vortex generator.

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Li, Songlin, Junwen Shao, and Yuze Sun. "Study on vortex generator on automobile and airplane." Theoretical and Natural Science 26, no. 1 (2023): 139–44. http://dx.doi.org/10.54254/2753-8818/26/20241049.

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A vortex generator is a compact device that can be installed on automobiles and airplanes to enhance aerodynamic efficiency. The use of vortex generators on automobiles and airplanes is briefly described in this study. It begins by outlining the working theories and categorizations of vortex generators, which reactivate the boundary layer to postpone airflow separation. Second, this study examines the use of vortex generators on automobiles and trucks, positioned at the back of these vehicles to reduce air drag and improve fuel efficiency. Studies show that vortex generators can increase vehic

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19

Zhou, Jun Jie, Xue Hong Wu, Xiao Qian Li, Jin Yin Huang, and Ding Biao Wang. "Performance Analysis for Elliptical Tube Longitudinal Vortex Generators." Advanced Materials Research 383-390 (November 2011): 6037–41. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.6037.

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In this paper, three-dimensional numerical simulation is conducted on the flow and heat transfer process for elliptical tube heat exchanger with rectangular vortex generators and triangular vortex generator by Fluent software, respectively, and the performance for elliptical tube heat exchanger with plate fin is compared. The results show that the Nusselt number increases with the increase in Reynolds number for the inlet velocity range from 1 to 5m/s, friction coefficient decreases with the increase in Reynolds number; at the same Reynolds number, Nusselt number for fin with Vortex Generators

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Patil, Manthan, Rajesh Gawade, Shubham Potdar, Khushabu Nadaf, Sanoj Suresh, and Devabrata Sahoo. "Effect of vortex generator on the flow field over a conventional delta wing in subsonic flow condition at higher angles of attack." FME Transactions 49, no. 2 (2021): 395–400. http://dx.doi.org/10.5937/fme2102395p.

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Flow over a conventional delta wing has been studied experimentally at a subsonic flow of 20 m/sec and the flow field developed at higher angle of attack varying from 10° to 20° has been captured. A vortex generator is mounted on the leeward surface of the delta wing and its effect on the flow field is studied. The set of wing tip vortices generated over the delta wing is captured by the oil flow visualization and the streamline over the delta wing surface captured with and without a vortex generator are compared. Based on the qualitative results, the effect of the vortex generator on the lift

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Ibarra-Udaeta, Iosu, Iñigo Errasti, Unai Fernandez-Gamiz, Ekaitz Zulueta, and Javier Sancho. "Computational Characterization of a Rectangular Vortex Generator on a Flat Plate for Different Vane Heights and Angles." Applied Sciences 9, no. 5 (2019): 995. http://dx.doi.org/10.3390/app9050995.

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Vortex generators (VG) are passive flow control devices used for avoiding or delaying the separation of the boundary layer by bringing momentum from the higher layers of the fluid towards the surface. The Vortex generator usually has the same height as the local boundary layer thickness, and these Vortex generators can produce overload drag in some cases. The aim of the present study was to analyze the characteristics and path of the primary vortex produced by a single rectangular vortex generator on a flat plate for the incident angles of β = 10 ∘ , 15 ∘ , 18 ∘ and 20 ∘ . A parametric study o

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Eroglu, A., K. Do¨bbeling, F. Joos, and P. Brunner. "Vortex Generators in Lean-Premix Combustion." Journal of Engineering for Gas Turbines and Power 123, no. 1 (1999): 41–49. http://dx.doi.org/10.1115/1.1335481.

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A novel fuel-air mixing technique on the basis of vortex generators has been developed and successfully implemented in the worlds first lean-premix reheat combustor of ABB’s GT24/GT26 series industrial gas turbines. This technique uses a special arrangement of delta-wing type vortex generators to achieve rapid mixing through longitudinal vortices, which produce low pressure drop and no recirculation zones along the mixing section. In this paper, after a short introduction to the topic, the motivation for utilizing vortex generators and the main considerations in their design are explained. A d

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S.P, Setyo Hariyadi, and Wawan Aries Widodo. "Efek Penggunaan Vortex Generator Terhadap Karakteristik Aliran pada Airfoil NACA 43018." Jurnal Penelitian 3, no. 4 (2018): 62–70. http://dx.doi.org/10.46491/jp.v3e4.119.62-70.

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Perancangan pada sayap pesawat terbang bertujuan menghasilkan lift yang setinggi-tingginya dan drag yang sekecil-kecilnya. Penundaan separasi menjadi hal yang penting dan sangat mempengaruhi kinerja aerodinamika-nya. Vortex generator merupakan salah satu alat yang memiliki pengaruh signifikan terhadap performasi tersebut. Dengan penambahan vortex generator ini separasi aliran dapat tertunda dan performansi sayap dapat meningkat.Topik yang dikaji dalam penelitian ini adalah aliran pada airfoil NACA 43018 dengan penambahan vortex generator. Tujuan penelitian ini adalah untuk membandingkan karakt

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S.P, Setyo Hariyadi, and Wawan Aries Widodo. "Karakteristik Wake Area Akibat Efek Penggunaan Vortex Generator di Belakang Wing Airfoil Naca 43018." Jurnal Penelitian 4, no. 1 (2019): 55–63. http://dx.doi.org/10.46491/jp.v4e1.287.55-63.

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Pada aliran yang melintasi suatu airfoil terdapat fenomena separasi, yakni ketika momentum aliran sudah tidak mampu lagi mengatasi adverse pressure gradien. Selanjutnya separasi ini akan diikuti dengan timbulnya daerah wake pada daerah di belakang airfoil yang mengakibatkan naiknya drag force dan menurunnya lift force. Untuk mengurangi hal tersebut maka vortex generator diletakkan pada sisi atas airfoil untuk mempercepat terbentuknya turbulent boundary layer sehingga dapat menunda separasi dan memperkecil daerah wake. Efektivitas dari vortex generator dipengaruhi oleh penempatan, ketingg

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VASU KANNAH, D. L. Vasthadu, B. Ramki MUTHUSUBASH, and P. SRINITHI PRIYADHARSHINI. "Experimental Investigation of Innovative Vortex Generators in the Mixing Enhancement of Subsonic Jets." INCAS BULLETIN 14, no. 3 (2022): 125–32. http://dx.doi.org/10.13111/2066-8201.2022.14.3.11.

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Jet mixing becomes necessary for its wide range of applications from household appliances to modern high technology rockets. Various researchers have studied the enhancement of jet mixing and concluded that the most effective jet mixing is due to the engagement of a vortex generator at the exit plane of the nozzle, thereby creating vortices of different sizes to enhance the mixing. To intensify the jet mixing, two similar innovative vortex generators with a total blockage ratio of 3.5% are placed diametrically opposite locations of the convergent nozzle. The Aspect Ratio of the convergent nozz

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Mardikus, Stefan, Petrus Setyo Prabowo, Vinsensius Tiara Putra, Made Wicaksana Ekaputra, and Juris Burlakovs. "3D Simulative Investigation of Heat Transfer Enhancement Using Three Vortex Generator Types Surrounding Tube in Plate Fin Heat Exchanger." E3S Web of Conferences 130 (2019): 01027. http://dx.doi.org/10.1051/e3sconf/201913001027.

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Vortex generator is a method to enhancing of heat exchanger performance but still have some disadvantages when the heat transfer performance increase. One of the disadvantage using vortex generator is high pressure drop. This investigation will be compared three type vortex generators to result the overall performance of heat transfer around tube in plate fin heat exchanger. The three types of vortex generator to investigate are rectangular winglet type, delta winglet type, and trapezoidal winglet type in laminar flow. The result showed that using the kind of trapezoidal winglet pair type in t

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Sullerey, R. K., and A. M. Pradeep. "Secondary Flow Control Using Vortex Generator Jets." Journal of Fluids Engineering 126, no. 4 (2004): 650–57. http://dx.doi.org/10.1115/1.1779661.

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In this paper, results are presented of an experimental investigation into the effectiveness of vortex generator jets in controlling secondary flows in two-dimensional S-duct diffusers. The experiments were performed in uniform and distorted inflow conditions and the performance evaluation of the diffuser was carried out in terms of static pressure recovery and quality of the exit flow. In the case with inflow distortion, tapered fin vortex generators were employed in addition to vortex generator jets to control flow separation that was detected on the wall with inflow distortion. Detailed mea

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Acharya, S., R. G. Hibbs, Y. Chen, and D. E. Nikitopoulos. "Mass/Heat Transfer in a Ribbed Passage With Cylindrical Vortex Generators: The Effect of Generator-Rib Spacing." Journal of Heat Transfer 122, no. 4 (1999): 641–52. http://dx.doi.org/10.1115/1.1288026.

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The effect of vortex generators on the heat transfer from internally ribbed passages is studied experimentally using a mass transfer technique. Cylindrical vortex generators placed directly above the ribs have been used in this study. Results are reported on the effect of the spacing between the vortex generator and the ribs. Detailed distributions of the Sherwood number contours and the centerline Sherwood number distributions are presented. Reynolds number values of 5000, 10,000, and 30,000 are studied and three generator-rib-spacing/rib-height (s/e) values of 0.55, 1, and 1.5 are considered

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Putra Arya, M. Iqbal Farhan, Syaiful, and Muchammad. "Numerical Analysis of the Thermal-Hydraulic Performance on Circular Channel Using Vortex Generator." International Research Journal of Innovations in Engineering and Technology 06, no. 10 (2022): 49–55. http://dx.doi.org/10.47001/irjiet/2022.610008.

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Vortex generators are often used in the industrial world because they can improve heat transfer well. Vortex generators make it possible to mix hot and cold fluids to be more optimal than not using them. Therefore, the current study aims to investigate the thermal-hydraulic of each case of a delta-winglet type vortex generator in a circular channel using numerical simulations. This modelling is carried out by varying the angle of the vortex generator type delta-winglet, namely, 90°, 105°, and 120°, which are arranged in a line, and the angle of attack in all cases is 30°. The Reynolds number i

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Cai, Nan, Li Ting Tian, Chun Hua Min, and Cheng Yin Qi. "The Effects of Arrangement of Longitudinal Vortex Generators on the Flow and Heat Transfer in the Rectangular Channel." Applied Mechanics and Materials 694 (November 2014): 205–10. http://dx.doi.org/10.4028/www.scientific.net/amm.694.205.

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In this paper, the heat transfer performance and flow resistance characteristics of the asymmetric arrangement of the rectangular winglet longitudinal vortex generators in the rectangular channels are numerically studied. Results show that at Re=500~2000, comparing with the symmetric arrangement of the longitudinal vortex generator, the Nusselt number of the asymmetric arrangement of the longitudinal vortex generator only decreased by 4% ~ 6%,while,the friction factor f decreases by 11% ~ 22%,the effect of flow drag reduction is very obvious. The asymmetric arrangements of the longitudinal vor

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M Iqbal Farhan Putra Arya, Syaiful, Muchammad, and Maria F. Soetanto. "Numerical Investigation of Heat Transfer Enhancement in Circular Channel with Variation in Angle of Delta-Winglet Vortex Generator." CFD Letters 15, no. 3 (2023): 97–111. http://dx.doi.org/10.37934/cfdl.15.3.97111.

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Vortex generators have been used to enhance heat transfer in numerous industries. Vortex generators improve flow mixing by destroying the thermal boundary layer, which improves heat transfer. This study aimed to improve heat transfer in circular channels by installing delta-winglet vortex generators. Accordingly, delta-winglet vortex generators with different angles – 90°, 105°, 120°, 135°, and 150° – were installed in an in-line arrangement. The k–ω turbulent SST model was applied to Reynolds numbers ranging from 4,000 to 12,000, varied at an interval of 2,000. The results indicated that a de

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Chang, Yen-Tso, Han-Ching Lin, Chi-Jui Huang, Go-Long Tsai, and Jinn-Feng Jiang. "Numerical Study of Thermal and Flow Characteristics of Plate-Fin Heat Sink with Longitudinal Vortex Generator Installed on the Ground." Mathematical Problems in Engineering 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/245759.

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This study applied the commercial software ANSYS CFD (FLUENT), for simulating the transient flow field and investigating the influence of each parameter of longitudinal vortex generators (LVGs) on the thermal flux of a plate-fin heat sink. Vortex generator was set in front of plate-fin heat sink and under the channel, which was in common-flow-down (CFD) and common-flow-up (CFU) conditions, which have the result of vortex generator of delta winglet pair (DWP). In this study the parameters were varied, such as the minimum transverse distance between winglet pair, the attack angle of the vortex g

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Wang, Han, Lixia Liu, Changda Zhou, et al. "Vortex beam generation with variable topological charge based on a spiral slit." Nanophotonics 8, no. 2 (2019): 317–24. http://dx.doi.org/10.1515/nanoph-2018-0214.

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AbstractWe propose a vortex beam generator based on a nanometer spiral slit and explore the propagation rule of the topological charge. Compared to the common methods of generation of a vortex beam with a fixed topological charge, the optical vortex generated by the proposed vortex beam generator has the topological charge varying with the propagation distance. The value of topological charge can be modulated by the geometric charge of the spiral slit and the propagation distance. Theoretical analysis predicts the variation rule of the topological charge of vortex beam in the near field, and n

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Voskobijnyk, A. V., V. M. Turick, O. A. Voskoboinyk, and V. A. Voskoboinick. "DIMPLE GENERATOR OF VORTEX STRUCTURES." Journal of Numerical and Applied Mathematics, no. 1 (135) (2021): 95–102. http://dx.doi.org/10.17721/2706-9699.2021.1.12.

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The paper presents the results of experimental studies of the space-time characteristics of the velocity and pressure field inside a hemispherical dimple on a flat surface. The features of the formation and development of vortex structures generated inside the dimple, as well as their interaction with the streamlined surface of the dimple and the boundary layer were established. Integral, spectral and correlation characteristics of the field of velocity, dynamic and wall pressure fluctuations were obtained. The velocities and directions of transfer of large-scale vortex structures and small-sc

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Romadhon, Awalu, and Dana Herdiana. "ANALISIS CFD KARAKTERISTIK AERODINAMIKA PADA SAYAP PESAWAT LSU-05 DENGAN PENAMBAHAN VORTEX GENERATOR (ANALYSIS OF CFD AERODYNAMIC CHARACTERISTICS AT THE WING OF AIRCRAFT LSU-05 WITH THE ADDITION OF VORTEX GENERATOR)." Jurnal Teknologi Dirgantara 15, no. 1 (2017): 45. http://dx.doi.org/10.30536/j.jtd.2017.v15.a2518.

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LSU-05 aircraft is one of the unmanned aerial vehicles (UAV), which is being developed by the Aeronautics Technology Center of LAPAN, whose mission is for research, observation, patrol, border surveillance, and investigation of natural disasters. This study aims to determine the effect of vortex generators on the aerodynamic characteristics of the LSU-05 Unmanned Aircraft wing. The method used is a numerical analysis with CFD simulation for predicting aerodynamic characteristics and flow phenomena that occur. The models used are the aircraft wing of the LSU-05 without vortex generator and with

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فاضل محمود, عباس. "AN EXPERIMENTAL STUDY OF THE EFFECT OF VORTEX GENERATOR ON THE FLAT-PLATE BOUNDARY LAYER." iraq journal of market research and consumer protection 13, no. 2 (2021): 68–78. http://dx.doi.org/10.28936/jmracpc13.2.2021.(6).

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This paper is dealing with an experimental study to show the influence of the geometric characteristics of the vortex generators VG son the thickness of the boundary layer (∂) and drag coefficients (CD) of the flat plate. Vortex generators work effectively on medium and high angles of attack, since they are "hidden" under the boundary layer and practically ineffective at low angles. The height of VGs relative to the thickness of the boundary layer enables us to study the efficacy of VGs in delaying boundary layer separation. The distance between two VGs also has an effect on the boundary layer

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Kharis, Rinal, and Harinaldi Harinaldi. "Investigating the Effects of Vortex Generator Geometry on NACA Inlet Performance." CFD Letters 17, no. 1 (2024): 17–34. http://dx.doi.org/10.37934/cfdl.17.1.1734.

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The NACA inlet is a submerged inlet that is widely used in aviation. It has the advantages of low drag and low radar cross-section. One of the considerations in using the NACA inlet is the low-pressure recovery compared to other types of inlets. To improve the pressure recovery of the NACA inlet, it can be done by controlling the boundary layer thickness in the upstream of the NACA inlet. This study aims to investigate the effect of the use and geometric parameters of vortex generators on the improvement of the performance of the NACA inlet. The geometric parameters that will be varied are hei

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Rusianto, Toto, Sudarsono, Samuel Kristiyana, and Yuli Purwanto. "Performance Characteristics of Vortex Wind Turbines with The Computational Fluid Dynamics (CFD) Aided Simulation." E3S Web of Conferences 605 (2025): 01004. https://doi.org/10.1051/e3sconf/202560501004.

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The purpose of this paper present research on vortex wind turbines that is referred to as wind turbines without propellers or bladeless. The innovation of the vortex lies in its unique shape and the way it harnesses energy through oscillating motion. The mast column oscillates with the wind, harnessing the von Karman vortices generated as the fluid passes through the column structure. This paper presents the results of computational fluid dynamics (CFD) simulations of a vortex wind turbine with 6 and 7 inch diameter cylinders at various wind speeds. The voltage generated by a vortex wind turbi

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Suranto Putro, Setyo Hariyadi, and Achmad Setiyo Prabowo. "STUDI NUMERIK PENGGUNAAN VORTEX GENERATOR PADA WING AIRFOIL NACA 43018." Jurnal Penelitian 4, no. 3 (2019): 67–77. http://dx.doi.org/10.46491/jp.v4e3.303.67-77.

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Pesawat terbang merupakan aplikasi ilmu mekanika fluida yang sangat memperhatikan aspek aerodinamika karena berkaitan dengan performa pada penerbangan. Satu hal penting yang harus diperhatikan dalam pendesainan suatu pesawat yaitu pemilihan airfoil dan modifikasinya. Modifikasi airfoil dilakukan untuk menunda separasi aliran dan meningkatkan performa airfoil, salah satunya dengan vortex generator. Modifikasi pada airfoil dilakukan untuk meningkatkan performansi dari airfoil. Hal ini dapat diindikasikan dengan tertundanya separasi aliran yang melintasi permukaan atas dari airfoil. Dengan tertun

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Vyas, Sunil, and P. Senthilkumaran. "Interferometric optical vortex array generator." Applied Optics 46, no. 15 (2007): 2893. http://dx.doi.org/10.1364/ao.46.002893.

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Zulkefli, Nur Faraihan, Zulhilmy Sahwee, Nurhayati Mohd Nur, Muhamad Nor Ashraf Mohd Fazil, and Muaz Mohd Shukri. "Lift Augmentation between Passive and Active Vortex Generator." Applied Mechanics and Materials 851 (August 2016): 532–37. http://dx.doi.org/10.4028/www.scientific.net/amm.851.532.

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This study was conducted to investigate the performance of passive and active vortex generator on the wing’s flap. The triangular shape of passive vortex generator (VG) was developed and attached on the wing’s flap leading edge while the plasma actuator performed as active vortex generator. The test was carried out experimentally using subsonic wind tunnel with 300 angles extended flap. Three different types of turbulent flow; with Reynolds number 1.5 x105, 2.0 x105, and 2.6x105 were used to study the aerodynamics forces of airfoil with plasma actuator OFF. All Reynolds number used were below

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Saputro, Herman, Laila Fitriana, Aris Purwanto, Fudhail A. Munir, and Wei-Cheng Wang. "A Development of Meso-Scale Vortex Combustion for a Micro Power Generator Based on a Thermoelectric Generator." Fluids 7, no. 12 (2022): 386. http://dx.doi.org/10.3390/fluids7120386.

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The development of portable electronic devices has increased; this development needs to be accompanied by the development of reliable power sources. In this study, two different vortex combustor sets were used in conjunction with a thermoelectric generator to determine their energy output. This study focuses on the development of a meso-scale vortex combustor to obtain the electric energy for a micro power generator; different materials and different vortex designs are analyzed. Numerical and experimental methods have been used to analyze the development of the vortex combustor. A horizontal v

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Bisht, Ankit Singh, Vijay Singh Bisht, Prabhakar Bhandari, Kamal Singh Rawat, Tabish Alam, and Paolo Blecich. "The Use of a Vortex Generator for the Efficient Cooling of Lithium-Ion Batteries in Hybrid Electric Vehicles." Processes 11, no. 2 (2023): 500. http://dx.doi.org/10.3390/pr11020500.

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High heat flux dissipation from the Lithium-ion battery pack of hybrid electric vehicles is one of the major concerns in the automotive sector, since it directly affects the performance and it may also lead to permanent failure. Among various thermal management systems, forced air cooling is most favorable due to its light weight, compactness, lower cost, and design flexibility. In the present work, a battery thermal management system with the two types of vortex generator in the coolant passage has been used to enhance the performance. A numerical model has been developed in commercial code t

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Hibbs, R. G., S. Acharya, Y. Chen, D. E. Nikitopoulos, and T. A. Myrum. "Heat Transfer in a Two-Pass Internally Ribbed Turbine Blade Coolant Channel With Cylindrical Vortex Generators." Journal of Turbomachinery 120, no. 3 (1998): 589–600. http://dx.doi.org/10.1115/1.2841757.

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The effect of vortex generators on the mass (heat) transfer from the ribbed passage of a two-pass turbine blade coolant channel is investigated with the intent of optimizing the vortex generator geometry so that significant enhancements in mass/heat transfer can be achieved. In the experimental configuration considered, ribs are mounted on two opposite walls; all four walls along each pass are active and have mass transfer from their surfaces but the ribs are nonparticipating. Mass transfer measurements, in the form of Sherwood number ratios, are made along the centerline and in selected inter

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Dai, Tingkai, and Bo Zhang. "Effect of Air Jet Vortex Generators on the Shock Wave Boundary Layer Interaction of Transonic Wing." Aerospace 10, no. 6 (2023): 553. http://dx.doi.org/10.3390/aerospace10060553.

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The interaction between shock waves and turbulent boundary layers (SBLI) is a common phenomenon in transonic and supersonic aircraft wings. In this study, we simulated the SBLI of a classical NACA0012 wing at an angle of attack (AOA) of 1.4° and Mach number (Ma) of 0.78 using the open-source software OpenFOAM. Our results show that an air-jet vortex generator can effectively reduce the length of the separation zone and improve the lift coefficient of the airfoil. The vortex structure generated by the jet vortex generator significantly reduces the separation caused by SBLI. We conducted simulat

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Tishkova, N. A., and B. A. Sentyakov. "Multifunctional pneumatic vortex elements with a rotating vortex generator." Russian Engineering Research 31, no. 8 (2011): 744–47. http://dx.doi.org/10.3103/s1068798x11080247.

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Farzaneh-Gord, Mahmood, and Meisam Sadi. "Improving vortex tube performance based on vortex generator design." Energy 72 (August 2014): 492–500. http://dx.doi.org/10.1016/j.energy.2014.05.071.

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Gutierrez-Amo, Ruben, Unai Fernandez-Gamiz, Iñigo Errasti, and Ekaitz Zulueta. "Computational Modelling of Three Different Sub-Boundary Layer Vortex Generators on a Flat Plate." Energies 11, no. 11 (2018): 3107. http://dx.doi.org/10.3390/en11113107.

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Flow separation is the source of several problems in a wind turbine including load fluctuations, lift losses, and vibrations. Vortex generators (VGs) are passive flow control devices used to delay flow separation, but their implementation may produce overload drag at the blade section where they are placed. In the current work, a computational model of different geometries of vortex generators placed on a flat plate has been carried out throughout fully meshed computational simulations using Reynolds Averaged Navier-Stokes (RANS) equations performed at a Reynolds number of R e θ = 2600 based o

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Cao, Kan, Bowen Yu, Chunlai Tian, Yaohua Yuan, Zhiwei Kang, and Zezi Tan. "Numerical simulation of louver fin heat exchangers with vortex generators." Thermal Science 29, no. 3 Part A (2025): 1889–97. https://doi.org/10.2298/tsci2503889c.

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This paper proposes a new type of vortex generator fin structure and employs CFD method to simulate the fin structure. It then studies the temperature and flow fields of vortex generator fins and ordinary louver fins, and compares the heat transfer and flow resistance characteristics of the two types of fins. The results indicate that when the Reynolds number is between 100 and 500, the heat transfer factor of the novel fin structure exhibits an increase of 5.05% to 8.35%, while its resistance factor shows a rise of 5.77% to 12.14%. Furthermore, the comprehensive factor of the fin structure de

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Sutardi, S., and Agung E. Nurcahya. "Experimental Study on the Effect of Vortex Generator on the Aerodynamic Characteristics of NASA LS-0417 Airfoil." Applied Mechanics and Materials 758 (April 2015): 63–69. http://dx.doi.org/10.4028/www.scientific.net/amm.758.63.

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Boundary layer flow structure developing on an airfoil surfaces strongly affects drag and lift forces acting on the body. Many studies have been done to reduce drag, such as introducing surface roughness on the airfoil surface, gas injection, attachment of vortex generators, or moving surface on the airfoil. Previous results showed that the attachment of vortex generators has potentially been able to control boundary layer separation compared to other controlling devices. This study is focused on the evaluation of the effect of vortex generator attachment on the NASA LS-0417 airfoil profile as

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