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Journal articles on the topic 'Aerodynamic simulations'

Author: Grafiati

Published: 7 June 2025

Last updated: 17 July 2025

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1

Nor Azman, Afzatul Najwa, Kausalyah Venkatason, and Shasthri Sivaguru. "Mesh Convergence Analysis on The Aerodynamic Performance of A Sedan Vehicle." Journal of Engineering Technology and Applied Physics 7, no. 1 (2025): 85–95. https://doi.org/10.33093/jetap.2025.7.1.14.

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This article performs a comprehensive mesh convergence analysis on the aerodynamic efficiency of sedan vehicles. Leading CAD and CFD tools, such as CATIA and ANSYS Fluent are used to model the geometry and run the aerodynamic simulations. The simulations are centred on evaluating the drag coefficient (Cd) for four different sedan profiles. A full scale and half scale profile model configuration were used to analyse and assess the simulations’ impact precision and computational efficiency. A thorough mesh sensitivity investigation is conducted to determine the effect and influence of the elemen

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Zhang, Zhe, Ying Chao Zhang, and Jie Li. "Vehicles Aerodynamics while Crossing each other on Road Based on Computational Fluid Dynamics." Applied Mechanics and Materials 29-32 (August 2010): 1344–49. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.1344.

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When vehicles run on road, they will be overtaken, cross by other vehicles or be impacted by crosswind. The other events of overtaking and in crosswind were investigated more deeply. A few of paper report the state of the research on this problem. Until now there are no any wind tunnel and road tests to study on road vehicle aerodynamics while crossing each other. Some numerical simulations were carried out by adopting technology of sliding interface and moving mesh. The method of numerical simulations was narrated in detail. The transient process of vehicles crossing each other was realized.

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Huang, Taiming, Zhengqi Gu, Chengjie Feng, and Wei Zeng. "Transient aerodynamics simulations of a road vehicle in the crosswind condition coupled with the vehicle’s motion." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232, no. 5 (2017): 583–98. http://dx.doi.org/10.1177/0954407017704609.

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The influence of transient aerodynamics on a vehicle in a crosswind and the effect on the vehicle’s motion are investigated by employing fully coupled simulations. The fully coupled method makes the simulation data on the fluid dynamics and on the vehicle dynamics exchange in time. LES are used to investigate the movement of the transient turbulence, and wind tunnel experiments are carried out to validate the numerical method. The vehicle is simplified as a three-degree-of-freedom system which moves in only the horizontal direction. The driver’s reaction is considered when the motion of the ve

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Yang, Zexuan, Chao Yang, Daxin Wen, Wenbo Zhou, and Zhigang Wu. "A Time-Domain Calculation Method for Gust Aerodynamics in Flight Simulation." Aerospace 11, no. 7 (2024): 583. http://dx.doi.org/10.3390/aerospace11070583.

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Gusts have a significant impact on aircraft and need to be analyzed through flight simulations. The solution for time-domain gust aerodynamic forces stands as a pivotal stage in this process. With the increasing demand for flight simulations within gusty environments, traditional methods related to gust aerodynamics cannot fail to balance computational accuracy and efficiency. A method that can be used to quickly and accurately calculate the time-domain gust aerodynamic force is needed. This study proposes the fitting strip method, a gust aerodynamic force solution method that is suitable for

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Klatt, Daniel, Michael Proff, and Robert Hruschka. "Investigation of the flight behavior of a flare-stabilized projectile using 6DoF simulations coupled with CFD." International Journal of Numerical Methods for Heat & Fluid Flow 30, no. 9 (2019): 4185–201. http://dx.doi.org/10.1108/hff-05-2018-0217.

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Purpose The present work aims to investigate the capabilities of accurately predicting the six-degrees-of-freedom (6DoF) trajectory and the flight behavior of a flare-stabilized projectile using computational fluid dynamics (CFD) and rigid body dynamics (RBD) methods. Design/methodology/approach Two different approaches are compared for calculating the trajectory. First, the complete matrix of static and dynamic aerodynamic coefficients for the projectile is determined using static and dynamic CFD methods. This discrete database and the data extracted from free-flight experiments are used to s

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Li, Ruiping, Weihua Zhang, Zhou Ning, Binbin Liu, Dong Zou, and Wei Liu. "Influence of a high-speed train passing through a tunnel on pantograph aerodynamics and pantograph–catenary interaction." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 231, no. 2 (2016): 198–210. http://dx.doi.org/10.1177/0954409715626743.

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Aerodynamics of trains running inside tunnels change more significantly in comparison with open air scenarios. It has been confirmed that the lateral vibration as well as the aerodynamic drag of the trains is increased and the micro-pressure wave is produced at the tunnel exit when the trains are passing through tunnels. The aim of this article is to explore the impact of a high-speed train passing through a tunnel on the pantograph aerodynamics and the dynamic behavior of the pantograph–catenary interaction. The aerodynamic forces acting on the pantograph are investigated thoroughly by extens

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Liang, Xiao, Xiaohui Gao, Tianjiao Gu, and Xudong Jia. "Aerodynamic Drag Coefficient Analysis of Heavy-Duty Vehicle Platoons: A Hybrid Approach Integrating Wind Tunnel Experiments and CFD Simulations." Energies 17, no. 24 (2024): 6383. https://doi.org/10.3390/en17246383.

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Heavy-duty vehicle (HDV) platooning, facilitated by vehicle-to-vehicle communication, plays a crucial role in transforming logistics and transportation. It reduces fuel consumption and emissions while enhancing road safety, supporting sustainable freight strategies and the integration of autonomous vehicles. This study employs a hybrid approach combining wind tunnel experiments and Computational Fluid Dynamics (CFD) simulations to analyze HDV platoon aerodynamics. The approach has two sequential phases: single-HDV simulation validation and multi-HDV platooning simulation. In the first phase, a

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Nunes, Lúcio Vargas de Albuquerque, Evelise Roman Corbalan Góis Freire, and Jonas Laerte Ansoni. "Computational simulation of an aerodynamic profile of a vehicle SAE formula type using OpenFOAM." Semina: Ciências Exatas e Tecnológicas 43, no. 1 (2022): 3. http://dx.doi.org/10.5433/1679-0375.2022v43n1p3.

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Improving vehicle design is essential for esthetic reasons and ensuring better efficiency and lower fuel consumption. The present study intends to provide a computational approach to an actual physical engineering problem: the aerodynamics of automobiles. The focus of this study was to use the open-source software OpenFOAM to study the aerodynamic effects on the external fairing of a Formula SAE vehicle. The vehicle used was the Z03 model of the ZEUS team of the Federal University of Lavras (UFLA). The team participates in university competitions of Formula SAE and, therefore, an aerodynamic i

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Griffith, Martin D., Timothy N. Crouch, David Burton, John Sheridan, Nicholas AT Brown, and Mark C. Thompson. "A numerical model for the time-dependent wake of a pedalling cyclist." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 233, no. 4 (2019): 514–25. http://dx.doi.org/10.1177/1754337119858434.

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A method for computing the wake of a pedalling cyclist is detailed and assessed through comparison with experimental studies. The large-scale time-dependent turbulent flow is simulated using the Scale Adaptive Simulation approach based on the Shear Stress Transport Reynolds-averaged Navier–Stokes model. Importantly, the motion of the legs is modelled by joining the model at the hips and knees and imposing solid body rotation and translation to the lower and upper legs. Rapid distortion of the cyclist geometry during pedalling requires frequent interpolation of the flow solution onto new meshes

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MARIN, Florin Bogdan, Daniela Laura BURUIANA, Viorica GHISMAN, and Mihaela MARIN. "Deep neural network modeling for CFD simulation of drone bioinspired morphing wings." INCAS BULLETIN 15, no. 4 (2023): 149–57. http://dx.doi.org/10.13111/2066-8201.2023.15.4.12.

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In this paper we present a deep neural network modelling using Computational Fluid Dynamics (CFD) simulations data in order to optimize control of bioinspired morphing wings of a drone. Drones flight needs to consider variation in aerodynamic conditions that cannot all be optimized using a fixed aerodynamic profile. Nature solves this issue as birds are changing continuously the shape of their wings depending of the aerodynamic current requirements. One important issue for fixed wing drone is the landing as it is unable to control and most of the time consequences are some damages at the nose.

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Hazet, Bruno, and Alexis Scotto d’Apollonia. "Aerodynamic and aerothermal simulations." ATZautotechnology 6, no. 1 (2006): 40–43. http://dx.doi.org/10.1007/bf03246934.

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Qi, Xiaojing, Yuxin Ou, Hance Zhang, and Da Wang. "Efficiency Enhancement Design Approach in the Side Wing of a FSAE Car Utilizing a Shutter-Like Fairing Structure." Applied Sciences 12, no. 13 (2022): 6552. http://dx.doi.org/10.3390/app12136552.

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Aerodynamical design is one of the critical technologies in race car engineering, and favorable race car aerodynamics is supposed to provide sufficient negative lift force and keep the center of pressure in the vicinity of center of mass. Taking the Formula Society of Automotive Engineers (FSAE) cars as an example, side wing structure is frequently adopted for better grip in the mid-back of short wheelbase, open wheel race cars. This research designs a shutter-like fairing structure and utilizes it to weaken the vorticity and reinforce the pressure of side wing flow field. The sensitivity of s

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Kopeć, I., and M. Kawałko. "Analysis of the impact of trailing-edge wing flaps on the aerodynamic characteristics and performance of the Tecnam P-2008JC aircraft." Journal of Physics: Conference Series 2676, no. 1 (2023): 012006. http://dx.doi.org/10.1088/1742-6596/2676/1/012006.

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Abstract The aim of the article was to analyse the impact of three selected types of trailing-edge flaps on the aerodynamic characteristics and performance of the Tecnam P-2008JC aircraft. The SOLIDWORKS software, together with the Flow Simulation module, was used to design the 3D model of the aircraft and to simulate the air flow. The article contains descriptions of issues related to the aerodynamics and dynamics of aircraft motion, calculations describing the procedure for designing and building a model of the tested aircraft in the SOLIDWORKS software, performing simulations using the Flow

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Kumar V, Sai Hemanth. "Deflection of Formula One Race Car Rear Wing using Numerical Simulations." International Journal of Engineering and Advanced Technology 12, no. 1 (2022): 9–13. http://dx.doi.org/10.35940/ijeat.a3800.1012122.

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Formula One is a track-based aerodynamic race between teams. In the design of motorsport cars, aerodynamics is crucial. When compared to the other race cars on the grid, the race car with the best aerodynamic performance performs well on the track and has a good lap time. The design of rear wing has significant influence on the performance of a race car as much of the downforce is provided by rear wing. Using structural and computational models, this paper tries to link the static and dynamic performance of a Formula 1 race car rear wing due to its deflection. Solidworks is used to design a re

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Researcher. "AERODYNAMICS STUDIES OF VARIOUS PASSENGER VEHICLES USING COMPUTATIONAL FLUID DYNAMICS (CFD)." International Journal of Mechanical Engineering and Technology (IJMET) 15, no. 6 (2024): 1–9. https://doi.org/10.5281/zenodo.14499663.

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This research work explores the aerodynamic characteristics of various automobiles, specifically passenger vehicles like sedans, SUVs, and hatchbacks, utilizing computational fluid dynamics (CFD) simulations and performing practical experimentation using wind tunnel. Previous studies on this topic were not able to give a comparative aerodynamic analysis of different automotive body type of automobiles. The study focuses on comparing the pressure distribution on the body of each vehicle type due to aerodynamic forces to gain insights into their aerodynamic performance and will help determine th

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Li, Tian, Yifan Li, Lai Wei, and Jiye Zhang. "Study on Lateral Vibration of Tail Coach for High-Speed Train under Unsteady Aerodynamic Loads." Vibration 6, no. 4 (2023): 1048–59. http://dx.doi.org/10.3390/vibration6040061.

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As the speed of high-speed trains increases, the vehicle’s lateral stability steadily deteriorates. There have been observations of abnormal vibrations in the tail car, particularly on certain sections of the railway line. This study built a high-speed train aerodynamic simulation model for a three-car consist, and a multibody dynamics simulation model for an eight-car consist based on numerical simulations of train aerodynamics and multibody dynamics. It investigated both steady and unsteady aerodynamic loads, flow field characteristics, and the dynamic performance of vehicles under varied ae

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Cantos, Sinforiano, Han Wu, Zhida Ma, Peng Zhou, Xin Zhang, and Siyang Zhong. "A numerical study of the duct geometry effects on the aerodynamics and aeroacoustics of ducted propellers." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 4 (2023): 4717–25. http://dx.doi.org/10.3397/in_2023_0670.

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Ducted propellers show large applicability in urban air mobility applications due to their operational safety, increased aerodynamic performance and noise reduction potential. In this work, we study the effect of the duct's lip design on the aerodynamics and aeroacoustics of ducted propellers in hover with numerical simulations, which are validated with experiments. Steady numerical simulations were conducted first to efficiently evaluate the impact of the lip design on the aerodynamic performance. The results show how the design of the lip affects the uniformity of the incoming flow to the pr

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Kumar, Gaurav, Chanfiou Ahmed Mboreha, and Yahya Al-fakih. "Numerical simulations on the aerodynamics of the Ahmed body at different slant angles." International Journal of Advanced Engineering Research and Applications 6, no. 03 (2020): 55–71. http://dx.doi.org/10.46593/ijaera.2020.v06i03.002.

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In this research, the aerodynamic behavior of Ahmed’s body with slant angles of 0°, 30° and 60° is studied using ANSYS FLUENT CFD code. The flow conditions for all cases were same while the rear slant angle is varied for Ahmed’s body. The aerodynamic parameters; lift coefficient and drag coefficient were focused mainly to analyze the flow behavior, it tells the aerodynamics efficiency. The time dependent transient simulation is run to study the behavior of fluid flow. As the Reynold’s number lied 5x105in turbulent regime so to accurately capture the turbulent effects, k-epsilon two equation mo

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Islam, Hafizul, Serge Sutulo, and C. Guedes Soares. "Aerodynamic Load Prediction on a Patrol Vessel Using Computational Fluid Dynamics." Journal of Marine Science and Engineering 10, no. 7 (2022): 935. http://dx.doi.org/10.3390/jmse10070935.

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Aerodynamic loads and moments on a naval patrol vessel are investigated using computational fluid dynamic simulations based on the OpenFOAM solver. After the initial turbulence, time, and grid dependency study, model scale simulations were performed for a wide range of inflow angles to predict aerodynamic forces and moments acting on the vessel at different heading conditions. For validation, model scale results were compared with wind tunnel data for similar hull forms. Finally, full-scale simulations were performed for a few cases to investigate possible scale effects on simulation results.

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Sai, Hemanth Kumar V. "Deflection of Formula One Race Car Rear Wing using Numerical Simulations." International Journal of Engineering and Advanced Technology (IJEAT) 12, no. 1 (2022): 9–13. https://doi.org/10.35940/ijeat.A3800.1012122.

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<strong>Abstract:</strong> Formula One is a track-based aerodynamic race between teams. In the design of motorsport cars, aerodynamics is crucial. When compared to the other race cars on the grid, the race car with the best aerodynamic performance performs well on the track and has a good lap time. The design of rear wing has significant influence on the performance of a race car as much of the downforce is provided by rear wing. Using structural and computational models, this paper tries to link the static and dynamic performance of a Formula 1 race car rear wing due to its deflection. Solidw

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Zhang, Yuxiang, Philip Cardiff, Fergal Cahill, and Jennifer Keenahan. "Assessing the Capability of Computational Fluid Dynamics Models in Replicating Wind Tunnel Test Results for the Rose Fitzgerald Kennedy Bridge." CivilEng 2, no. 4 (2021): 1065–90. http://dx.doi.org/10.3390/civileng2040057.

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Despite its wide acceptance in various industries, CFD is considered a secondary option to wind tunnel tests in bridge engineering due to a lack of confidence. To increase confidence and to advance the quality of simulations in bridge aerodynamic studies, this study performed three-dimensional RANS simulations and DESs to assess the bridge deck aerodynamics of the Rose Fitzgerald Kennedy Bridge and demonstrated detailed procedures of the verification and validation of the applied CFD model. The CFD simulations were developed in OpenFOAM, the results of which are compared to prior wind tunnel t

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Lv, Shenghui, and Zhong Su. "A New Aerodynamic Domain Model (ADM) for Enhancing the Reliability of Spin Flight Vehicle Simulations." Aerospace 12, no. 4 (2025): 350. https://doi.org/10.3390/aerospace12040350.

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A spin flight vehicle is characterized by its inherent active or passive spinning motion, resulting in complex movements that pose challenges for accurately calculating aerodynamic forces. This often leads to significant discrepancies between simulation results and actual performance. To address the low reliability of simulations for single-wing spin flight vehicles caused by difficulties in aerodynamic force estimation, this paper introduces the concept of an aerodynamic domain model. Based on the configuration of a specific single-wing spin flight vehicle, the model applies rigid body dynami

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Zhao, Xinxin, Jinguang Shi, Huajie Ren, and Zhongyuan Wang. "Nonlinear Model and Ballistic Impact of Body Aerodynamics for Canard Dual-Spin Aircraft." Aerospace 12, no. 6 (2025): 558. https://doi.org/10.3390/aerospace12060558.

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Targeting the nonlinear issues of the canard dual-spin aircraft, which relies on the high-speed rotation of the afterbody for flight stability and achieves trajectory correction by adjusting the roll angle of the low-speed rotating forebody to alter aerodynamics, the establishment of an accurate aerodynamic model is crucial for in-depth studies of its ballistic characteristics and design. For this, by taking the effects of canard–body interference, fore/aft body reversal, and other factors into account, an accurate model of the body aerodynamics applicable to large angles of attack is presente

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Tchakoua, Pierre, René Wamkeue, Mohand Ouhrouche, Ernesto Benini, and Gabriel Ekemb. "Electric Circuit Model for the Aerodynamic Performance Analysis of a Three-Blade Darrieus-Type Vertical Axis Wind Turbine: The Tchakoua Model." Energies 9, no. 10 (2016): 820. http://dx.doi.org/10.3390/en9100820.

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The complex and unsteady aerodynamics of vertical axis wind turbines (VAWTs) pose significant challenges for simulation tools. Recently, significant research efforts have focused on the development of new methods for analysing and optimising the aerodynamic performance of VAWTs. This paper presents an electric circuit model for Darrieus-type vertical axis wind turbine (DT-VAWT) rotors. The novel Tchakoua model is based on the mechanical description given by the Paraschivoiu double-multiple streamtube model using a mechanical‑electrical analogy. Model simulations were conducted using MATLAB for

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Agarwal, Kanak, Vedant Vijaykrishnan, Dyutit Mohanty, and Manikandan Murugaiah. "A Comprehensive Dataset of the Aerodynamic and Geometric Coefficients of Airfoils in the Public Domain." Data 9, no. 5 (2024): 64. http://dx.doi.org/10.3390/data9050064.

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This study presents an extensive collection of data on the aerodynamic behavior at a low Reynolds number and geometric coefficients for 2900 airfoils obtained through the class shape transformation (CST) method. By employing a verified OpenFOAM-based CFD simulation framework, lift and drag coefficients were determined at a Reynolds number of 105. Considering the limited availability of data on low Reynolds number airfoils, this dataset is invaluable for a wide range of applications, including unmanned aerial vehicles (UAVs) and wind turbines. Additionally, the study offers a method for automat

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Wiński, Krzysztof, and Adam Piechna. "Comprehensive CFD Aerodynamic Simulation of a Sport Motorcycle." Energies 15, no. 16 (2022): 5920. http://dx.doi.org/10.3390/en15165920.

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Nowadays, aerodynamics is a key focal point in the vehicle design process. Beyond its direct impact on the performance of a vehicle, it also has significant effects on economics and safety. In the last decade numerical methods, mainly Computational Fluid Dynamics (CFD), have established themselves as a reliable tool that assists in the design process and complements classical tunnel tests. However, questions remain about the possible obtained accuracy, best practices and applied turbulence models. In this paper, we present a comprehensive study of motorcycle aerodynamics using CFD methods whic

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Sahibzada, Shumail, Farrukh Sher Malik, Sheharyar Nasir, and Shahrukh Khan Lodhi. "AI-Augmented Turbulence and Aerodynamic Modelling: Accelerating High-Fidelity CFD Simulations with Physics-informed Neural Networks." International Journal of Innovative Research in Computer Science and Technology 13, no. 1 (2025): 91–97. https://doi.org/10.55524/ijircst.2025.13.1.14.

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Computational Fluid Dynamics (CFD) simulations are essential for understanding and optimizing aerodynamic performance across various engineering applications, from aerospace to automotive design. However, high-fidelity CFD simulations are computationally expensive, requiring extensive time and resources to resolve turbulence and complex flow interactions accurately. This study proposes an AI-augmented turbulence and aerodynamic modeling framework that integrates Physics-Informed Neural Networks (PINNs) with traditional CFD solvers to accelerate high-fidelity simulations while maintaining accur

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Rasmussen, Johannes Tophøj, Mads Mølholm Hejlesen, Allan Larsen, and Jens Honoré Walther. "Discrete vortex method simulations of the aerodynamic admittance in bridge aerodynamics." Journal of Wind Engineering and Industrial Aerodynamics 98, no. 12 (2010): 754–66. http://dx.doi.org/10.1016/j.jweia.2010.06.011.

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Soper, David, Dominic Flynn, Chris Baker, Adam Jackson, and Hassan Hemida. "A comparative study of methods to simulate aerodynamic flow beneath a high-speed train." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 232, no. 5 (2017): 1464–82. http://dx.doi.org/10.1177/0954409717734090.

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The introduction of dedicated high-speed railway lines around the world has led to issues associated with running trains at very high speeds. Aerodynamic effects proportionally increase with train speed squared; consequently, at higher speeds aerodynamic effects will be significantly greater than those of trains travelling at lower speeds. On ballasted track beds, the phenomenon in which ballast particles become airborne during the passage of a high-speed train has led to the need for understanding the processes involved in train and track interaction (both aerodynamical and geotechnical). The

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Meana-Fernández, Andrés, Jesús Fernández Oro, Katia Argüelles Díaz, and Sandra Velarde-Suárez. "Turbulence-Model Comparison for Aerodynamic-Performance Prediction of a Typical Vertical-Axis Wind-Turbine Airfoil." Energies 12, no. 3 (2019): 488. http://dx.doi.org/10.3390/en12030488.

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In this work, different turbulence models were applied to predict the performance of a DU-06-W-200 airfoil, a typical choice for vertical-axis wind turbines (VAWT). A compromise between simulation time and results was sought, focusing on the prediction of aerodynamic forces and the developed flow field. Reynolds-averaged Navier–Stokes equation (U-RANS) models and Scale-Resolving Simulations (SRS), such as Scale-Adaptive Simulation (SAS) and Detached Eddy Simulation (DES), were tested, with k − ω -based turbulence models providing the most accurate predictions of aerodynamic forces. A deeper st

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Morales, Eduardo, Mario Chávez, Griselda Abarca, Yunuén López, Jesús Mares, and Juan Cruz. "Structural Study on the Impact of Aerodynamic Loads on Winglet Support Structures." International Journal of Engineering, Science and Information Technology 5, no. 3 (2025): 112–21. https://doi.org/10.52088/ijesty.v5i3.888.

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Aerodynamic spoilers are intended to reduce drag forces and generate lift on surfaces. However, dynamic operating conditions can affect their performance and that of their supporting structures. This study evaluates the impact of aerodynamic loads on a spoiler's supporting structure using fluid-structure interaction (FSI) analysis. Three NACA airfoil models were analyzed to benchmark their structural behavior. Simulations using Ansys® software modeled the spoiler's airflow-induced pressures and structural displacements, considering dynamic loads derived from a similarity study between a full-s

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Öhrle, Constantin, Felix Frey, Jakob Thiemeier, Manuel Keßler, and Ewald Kräamer. "Coupled and Trimmed Aerodynamic and Aeroacoustic Simulations for Airbus Helicopters' Compound Helicopter RACER." Journal of the American Helicopter Society 64, no. 3 (2019): 1–14. http://dx.doi.org/10.4050/jahs.64.032003.

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In recent years, various helicopter manufacturers increasingly have been focusing on the development of new high-speed rotorcraft configurations, one of them being the compound helicopter RACER (rapid and cost-efficient rotorcraft) of Airbus Helicopters (AH). However, these new configurations encounter new aeromechanic challenges, in terms of aerodynamic interactions, flight mechanics stability, rotor dynamics, or aeroacoustic noise emission, to name only a few. To support AH at the minimization of risk of RACER's first flight, the Institute of Aerodynamics and Gas Dynamics provides high-fidel

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Doçi, Ilir, and Ferat Shala. "Numerical Analysis of the Rear Wind Influence on the Truck During Travel." Strojnícky časopis - Journal of Mechanical Engineering 72, no. 2 (2022): 41–56. http://dx.doi.org/10.2478/scjme-2022-0015.

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Abstract Rear wind is the air flow that blows in the rear side of the truck. Also known as a tailwind, this aerodynamic force can cause stability issues during forward travel. The methodology of the study is CFD numerical analysis of vehicle aerodynamics. The results will be acquired for the influential aerodynamic parameters, which includes velocity, pressure, vortex, stress, that will explain the impact of rear wind on the truck body. This is achieved with the aid of design, modelling, and simulations using software Comsol Multiphysics. The simulations were performed with freestream velocity

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Arafat, Mohammad, Izuan Amin Ishak, Nurshafinaz Mohd Maruai, Muhammad Rusydi Muhammad Razif, Fadhilah Mohd Sakri, and Rino Andias Anugraha. "CFD Assessment for Small UAV Propeller Aerodynamics." CFD Letters 17, no. 6 (2024): 81–92. https://doi.org/10.37934/cfdl.17.6.8192.

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This study investigates UAV propeller aerodynamics, focusing on key parameters such as mesh resolutions, timestep sizes, rotational speeds and RANS turbulence models. Through comprehensive CFD simulations, the aerodynamic performance of the propeller is assessed across operating conditions from 3,000 to 8,000 RPM. We analyse mesh resolutions ranging from coarse to fine, finding that finer meshes yield more accurate thrust and torque predictions but increase computational costs. Timestep sizes of 0.5°, 1°, 5° and 10° are evaluated, with smaller timesteps offering finer temporal resolution at th

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Saban, D., J. F. Whidborne, and A. K. Cooke. "Simulation of wake vortex effects for UAVs in close formation flight." Aeronautical Journal 113, no. 1149 (2009): 727–38. http://dx.doi.org/10.1017/s0001924000003389.

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AbstractThis paper addresses the development of multiple UAV deployment simulation models that include representative aerodynamic cross-coupling effects. Applications may include simulations of autonomous aerial refuelling and formation flying scenarios. A novel wake vortex model has been developed and successfully integrated within a Matlab/Simulink simulation environment. The wake vortex model is both sufficiently representative to support studies of aerodynamic interaction between multiple air vehicles, and straightforward enough to be used within real time or near real time air-to-air simu

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Guerrero, Alex, and Robert Castilla. "Aerodynamic Study of the Wake Effects on a Formula 1 Car." Energies 13, no. 19 (2020): 5183. http://dx.doi.org/10.3390/en13195183.

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The high complexity of current Formula One aerodynamics has raised the question of whether an urgent modification in the existing aerodynamic package is required. The present study is based on the evaluation and quantification of the aerodynamic performance on a 2017 spec. adapted Formula 1 car (the latest major aerodynamic update) by means of Computational Fluid Dynamics (CFD) analysis in order to argue whether the 2022 changes in the regulations are justified in terms of aerodynamic necessities. Both free stream and flow disturbance (wake effects) conditions are evaluated in order to study a

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Perez-Becker, Sebastian, Francesco Papi, Joseph Saverin, David Marten, Alessandro Bianchini, and Christian Oliver Paschereit. "Is the Blade Element Momentum theory overestimating wind turbine loads? – An aeroelastic comparison between OpenFAST's AeroDyn and QBlade's Lifting-Line Free Vortex Wake method." Wind Energy Science 5, no. 2 (2020): 721–43. http://dx.doi.org/10.5194/wes-5-721-2020.

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Abstract. Load calculations play a key role in determining the design loads of different wind turbine components. To obtain the aerodynamic loads for these calculations, the industry relies heavily on the Blade Element Momentum (BEM) theory. BEM methods use several engineering correction models to capture the aerodynamic phenomena present in Design Load Cases (DLCs) with turbulent wind. Because of this, BEM methods can overestimate aerodynamic loads under challenging conditions when compared to higher-order aerodynamic methods – such as the Lifting-Line Free Vortex Wake (LLFVW) method – leadin

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Schäfer, Dominik. "T-tail flutter simulations with regard to quadratic mode shape components." CEAS Aeronautical Journal 12, no. 3 (2021): 621–32. http://dx.doi.org/10.1007/s13272-021-00524-8.

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AbstractIt is known that the dynamic aeroelastic stability of T-tails is dependent on the steady aerodynamic forces at aircraft trim condition. Accounting for this dependency in the flutter solution process involves correction methods for doublet lattice method (DLM) unsteady aerodynamics, enhanced DLM algorithms, unsteady vortex lattice methods (UVLM), or the use of CFD. However, the aerodynamic improvements along with a commonly applied modal approach with linear displacements results in spurious stiffness terms, which distort the flutter velocity prediction. Hence, a higher order structural

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Sahbon, Nezar, and Michał Welcer. "Comparison of Two Aerodynamic Models for Projectile Trajectory Simulation." Aerospace 11, no. 3 (2024): 189. http://dx.doi.org/10.3390/aerospace11030189.

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The accuracy of aerodynamically controlled guided projectile simulations is largely determined by the aerodynamic model employed in flight simulations which impacts vehicle interaction with the surrounding air. In this work, the performance of projectile path following with two distinct aerodynamic models is examined for their possible influence on trajectory following accuracy. The study incorporates the path following guidance algorithm, which enables the object to navigate along a predefined path. The simulation mathematical model is developed in the MATLAB/Simulink environment. In addition

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Gupta, Preetam, and Srinivas G. "Aerodynamic Performance Enhancement of a Sports Vehicle Using Numerical Techniques." IOP Conference Series: Earth and Environmental Science 1100, no. 1 (2022): 012012. http://dx.doi.org/10.1088/1755-1315/1100/1/012012.

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Abstract Evaluation of vehicle aerodynamics is an integral part of automotive engineering. The aerodynamic performance of automobile has great influence on the power performance, economy, handling stability and ride comfort of the vehicle. In this context, the present work focuses on improving the aerodynamic performance of a modelled sports vehicle using numerical techniques. Baseline analysis of a research paper was conducted for validation of the results obtained in numerical simulations. Multiple turbulence models, flow boundary conditions, and inlet parameters were explored using Ansys Fl

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Abedi, Hamidreza, and Claes Eskilsson. "Wind Turbine Aerodynamics Simulation Using the Spectral/hp Element Framework Nektar++." Wind 5, no. 1 (2025): 6. https://doi.org/10.3390/wind5010006.

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Wind power plays an increasingly vital role in sustainable energy development. However, accurately simulating wind turbine aerodynamics, particularly in offshore wind farms, remains challenging due to complex environmental factors such as the marine atmospheric boundary layer. This study investigates the integration and assessment of the Actuator Line Model (ALM) within the high-order spectral/hp element framework, Nektar++, for wind turbine aerodynamic simulations. The primary objective is to evaluate the implementation and effectiveness of the ALM by analyzing aerodynamic loads, wake behavio

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Wang, Luwei, Xingjun Hu, Peng Guo, et al. "Analysis of the Influence of Different Turbulence Models on the Prediction of Vehicle Aerodynamic Performance." Energies 18, no. 11 (2025): 2803. https://doi.org/10.3390/en18112803.

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As global energy grows short and environmental governance pressure increases, the automotive industry, a major energy consumer and pollution emitter, must enhance vehicle aerodynamics to cut energy use and emissions. This study creates an open-domain and virtual wind tunnel dual-computational-domain setup. It optimizes mesh refinement and boundary conditions, and evaluates the k-ε, k-ω, and Detached Eddy Simulation (DES) turbulence models. These models predict vehicle aerodynamic resistance, lift, and wake flow structure. The k-ε model best predicts the steady-state drag coefficient (Cd) (erro

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Ketong, Liu, and Tang Aiping. "Numerical Investigation for Aerodynamic Derivatives of Bridge Deck Using DES." Open Civil Engineering Journal 8, no. 1 (2014): 326–34. http://dx.doi.org/10.2174/1874149501408010326.

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Detached Eddy Simulation（DES）is quite a new approach for the treatment of turbulence, which unites the efficiency of Reynolds Averaged Navier-Stokes Simulation (RANS) and the accuracy of Large Eddy Simulation (LES) into one framework. In this paper, DES method based on Spalart-Allmaras (S-A) turbulence model is employed to simulate the incompressible viscous flow around bridge decks. In order to obtain the aerodynamic forces, the forced motion simulations of the bridge decks are implemented by self-developed codes combined with FLUENT software. After obtaining the aerodynamic forces, aerodynam

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Kocjan, Jakub, Stanisław Kachel, and Robert Rogólski. "Helicopter Main Rotor Blade Parametric Design for a Preliminary Aerodynamic Analysis Supported by CFD or Panel Method." Materials 15, no. 12 (2022): 4275. http://dx.doi.org/10.3390/ma15124275.

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This work is the preliminary part of a research program which is aimed at finding some new methods and design solutions for helicopter main rotor multidisciplinary optimization. The task was to develop a parametric geometric model of a single-blade main rotor applicable for varied methods of numerical aerodynamic modeling. The general analytical assumptions for the parametric main rotor design were described. The description of the main rotor blade parametric design method based on Open GRIP graphical programming was presented. Then, the parametric model of a blade was used for aerodynamic mod

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Casoni, Marco, Andrea Magrini, and Ernesto Benini. "Multi-Frequency Aeroelastic ROM for Transonic Compressors." Aerospace 11, no. 12 (2024): 1036. https://doi.org/10.3390/aerospace11121036.

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The accurate prediction of the aeroelastic behavior of turbomachinery for aircraft propulsion poses a difficult yet fundamental challenge, since modern aircraft engines tend to adopt increasingly slender blades to achieve a higher aerodynamic efficiency, incurring an increased aeroelastic interaction as a drawback. In the present work, we present a reduced order model for flutter prediction in axial compressors. The model exploits the aerodynamic influence coefficients technique with the adoption of a broadband frequency signal to compute the aerodynamic damping for multiple reduced frequencie

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Jia, Jianbo, Yan Shi, Xianyu Meng, Bo Zhang, and Dameng Li. "Pneumatic Noise Study of Multi-Stage Sleeve Control Valve." Processes 11, no. 9 (2023): 2544. http://dx.doi.org/10.3390/pr11092544.

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This study considers the practical issue of severe noise observed in a multi-stage sleeve control valve within an engineering project. Employing computational fluid dynamics (CFD) methodology, we initially performed numerical simulations to analyze the steady-state flow field within the control valve. Subsequently, we identified the underlying factors contributing to the noise issue within the valve. To assess the aerodynamic noise of the control valve, we applied the FW-H acoustic analogy theory and determined the intensity and distribution characteristics of the aerodynamic noise. Finally, w

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Morgan, Laurence, and William Leithead. "Aerodynamic modelling of a novel vertical axis wind turbine concept." Journal of Physics: Conference Series 2257, no. 1 (2022): 012001. http://dx.doi.org/10.1088/1742-6596/2257/1/012001.

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Abstract This paper introduces the X-Rotor, a hybrid vertical-horizontal axis turbine concept designed to lower the cost of energy in the floating offshore environment. The development of a double multiple streamtube (DMS) simulation tool is presented alongside a thorough discussion of the secondary correction factors included in the model. New corrections for streamline curvature effects applicable to an airfoil where the blade normal plane is not aligned with the rotor plane are derived. The DMS model is successfully validated against experimental data and against higher fidelity lifting lin

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Schafhirt, Sebastian, and Michael Muskulus. "Decoupled simulations of offshore wind turbines with reduced rotor loads and aerodynamic damping." Wind Energy Science 3, no. 1 (2018): 25–41. http://dx.doi.org/10.5194/wes-3-25-2018.

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Abstract. Decoupled load simulations are a computationally efficient method to perform a dynamic analysis of an offshore wind turbine. Modelling the dynamic interactions between rotor and support structure, especially the damping caused by the rotating rotor, is of importance, since it influences the structural response significantly and has a major impact on estimating fatigue lifetime. Linear damping is usually used for this purpose, but experimentally and analytically derived formulas to calculate an aerodynamic damping ratio often show discrepancies to measurement and simulation data. In t

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Yin, F. F., J. J. Chen, X. K. Li, et al. "A blade element momentum model for dual-rotor wind turbines considering inter-rotor velocity interferences." Journal of Physics: Conference Series 2265, no. 4 (2022): 042058. http://dx.doi.org/10.1088/1742-6596/2265/4/042058.

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Abstract A blade element momentum model for predicting the aerodynamic performance of dual-rotor wind turbines (DRWTs) as an aerodynamic design tool is introduced in this paper. The model considers the inter-rotor axial velocity reduction and the tangential velocity components in the front rotor’s wake to model the inter-rotor velocity interferences for the inflow velocity as the input of the BEM theory. A DRWT with two NREL 5MW rotors is studied using the present model and CFD simulations. Results from the two methods show good agreements with each other in the trends of power, thrust, and ae

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Sun, Xiaoqi, and Han Xiao. "Numerical Modeling and Investigation on Aerodynamic Noise Characteristics of Pantographs in High-Speed Trains." Complexity 2018 (2018): 1–12. http://dx.doi.org/10.1155/2018/6932596.

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Pantographs are important devices on high-speed trains. When a train runs at a high speed, concave and convex parts of the train cause serious airflow disturbances and result in flow separation, eddy shedding, and breakdown. A strong fluctuation pressure field will be caused and transformed into aerodynamic noises. When high-speed trains reach 300 km/h, aerodynamic noises become the main noise source. Aerodynamic noises of pantographs occupy a large proportion in far-field aerodynamic noises of the whole train. Therefore, the problem of aerodynamic noises for pantographs is outstanding among m

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