Despite the significance of rough-wall turbulent flows in many engineering applications (e.g. leading-edge erosion of wind turbine blades), we need up-to-date review papers on the topic. However, Kadivar, Tormey, and McGranaghan (2021) give us just that—with more than 500 references spanning 175 years of research, they analyse past and recent flow studies over rough surfaces to improve our general understanding and identify gaps for future research. The paper first describes the classical division of the boundary layer into layers dominated by viscous or turbulent shear stresses and the classification of “smooth” and “rough” flow regimes using the concept of equivalent sand-grain roughness. It then outlines how roughness effects have historically been investigated experimentally and, more recently, numerically with high-resolution computational fluid dynamics (CFD). While our understanding of turbulent flows over rough surfaces is still far from comprehensive, the paper concludes that continual research and modern CFD methods, like DNS, are the pathway to improve our fundamental understanding of rough-wall flows. Get research summaries by email: https://lnkd.in/eDevB8E2 Mohammadreza Kadivar, David Tormey, and Dr. Gerard McGranaghan. 2021. “A Review on Turbulent Flow over Rough Surfaces: Fundamentals and Theories.” International Journal of Thermofluids 10 (May): 100077. https://lnkd.in/dEiSf9Hi. #windenergy #windpower #research #CFD #AndreasBechmann #windturbine #leadingedgeerosion #lercat
Andreas Bechmann’s Post
More Relevant Posts
-
🤔 “Where do I even begin with Fluid Dynamics & CFD?” It’s the first question we hear from engineering students and professionals alike. The answer? Start with the fundamental equations that govern our physical world. 🌊 Introducing our comprehensive guide to Essential Fluid Dynamics Equations - your roadmap from basics to mastery. 📚 What you’ll learn: - Governing Equations of Fluid Flow - The Continuity Equation (your foundation) - Navier-Stokes Equations (the heart of fluid dynamics) - Energy Equation (understanding heat transfer) - Bernoulli’s Equation (practical applications) - Euler’s Equations (ideal fluid flow) - Darcy-Weisbach (real-world pipe flow) 💡Ready to master fluid dynamics? Read more : https://lnkd.in/eM5K9HBv #FluidDynamics #Engineering #CFD #Mathematics #Tutorial #ANSYS
To view or add a comment, sign in
-
📢 Just Published! 📢 📌 Study on the open-air NEPE solid propellant fire characteristics: Effect of altitude upon the flame performance through CFD 👉 Key findings: ▶ Construction of a combustion model for NEPE solid propellant at atmospheric pressure shows strong agreement with experimental data. ▶As altitude increases, flame temperature and height decrease due to reduced pressure, indicating incomplete combustion of fuel, particularly aluminum particles. ▶Incomplete combustion in high-altitude settings weakens convective heat transfer, potentially leading to incomplete ignition under specific conditions. ▶Localization of the highest flame temperature descends with altitude due to reduced flame jet flow rate and gas velocity. ▶Fires in high-altitude environments exhibit smaller coverage areas compared to plains. 📖 The article is now available: https://lnkd.in/gXgAN6yr #SolidPropellant #FireSafety #CFD #FlamePerformance #AltitudeEffect #IndustrialSafety #Research #NEPEPropellant #ComputationalModeling #FireCharacteristics KeAi Publishing
Study on the open-air NEPE solid propellant fire characteristics: Effect of altitude upon the flame performance through CFD
sciencedirect.com
To view or add a comment, sign in
-
💥 This can be the basis of Computational Fluid Dynamics (CFD). A must-read blog about fundamentals of fluid dynamics
🤔 “Where do I even begin with Fluid Dynamics & CFD?” It’s the first question we hear from engineering students and professionals alike. The answer? Start with the fundamental equations that govern our physical world. 🌊 Introducing our comprehensive guide to Essential Fluid Dynamics Equations - your roadmap from basics to mastery. 📚 What you’ll learn: - Governing Equations of Fluid Flow - The Continuity Equation (your foundation) - Navier-Stokes Equations (the heart of fluid dynamics) - Energy Equation (understanding heat transfer) - Bernoulli’s Equation (practical applications) - Euler’s Equations (ideal fluid flow) - Darcy-Weisbach (real-world pipe flow) 💡Ready to master fluid dynamics? Read more : https://lnkd.in/eM5K9HBv #FluidDynamics #Engineering #CFD #Mathematics #Tutorial #ANSYS
To view or add a comment, sign in
-
⚡Time Dependent CFD Simulation: Vortex Shedding⚡ Vortex shedding is a phenomenon, when the wind blows across a structural member, vortices are shed alternately from one side to the other, and where alternating low-pressure zones are generated on the downwind side of the structure giving rise to a fluctuating force. This phenomenon is of major importance in engineering design because the alternate formation and shedding of vortices also creates alternating forces, which occur more frequently as the velocity of the flow increases. Source: https://bit.ly/3nRj1Jr 📥 Latest newsletter: https://bit.ly/41N6Ixq #cfd #simulation #engineering #science
To view or add a comment, sign in
-
🚀 Exciting Project Update: CFD Analysis of a Crane 🚀 I recently completed a comprehensive Computational Fluid Dynamics (CFD) analysis on a crane to evaluate its aerodynamic performance under various operational conditions. The project involved: 🔍 Assessing factors such as wind load, pressure distribution, and structural stability. 🔧 Optimizing the crane's design to withstand environmental forces while maintaining structural integrity. 💡 Using the analysis results to develop design improvements that minimized drag, enhanced safety, and improved overall efficiency. This project was a fantastic opportunity to apply advanced simulation techniques and contribute to better-performing, safer, and more efficient crane designs in real-world applications. 💪🛠️ #CFD #Engineering #Simulation #CraneDesign #Aerodynamics #StructuralAnalysis #EngineeringExcellence
CFD ANALYSIS OF A CRANE by iokechukwu | SimScale
simscale.com
To view or add a comment, sign in
-
Using Computational Fluid Dynamics (CFD) in ship design offers several key benefits that enhance performance and efficiency. At 21 Knots Group, our expert and experienced team utilizes #CFD to simulate and analyze fluid flow around ship hulls, enabling precise predictions of hydrodynamic performance. This advanced modeling helps in optimizing hull shapes to reduce resistance, improve fuel efficiency, and ensure stability in various marine conditions. CFD also aids in the assessment of #propeller performance and the interaction between hull and propeller, leading to better propulsion systems. By leveraging CFD, the marine industry can achieve significant cost savings and performance improvements. For more information, contact us to discover how our solutions can benefit your ship design projects. 📧 info@21-knots.com 📞 +91 99676 13005 #21KnotsGroup #ShipDesign #CFD #MarineEngineering #FluidDynamics #Hydrodynamics #HullOptimization #FuelEfficiency #PropulsionSystems #MarineTechnology #PerformanceImprovement
CFD Analysis
To view or add a comment, sign in
-
🏙️ Ever wondered how structural engineers ensure the stability of skyscrapers and other vital structures that the site conditions against the wind? 💨 The key lies in wind tunnel simulation using Computational Fluid Dynamics (CFD). 💡 This advanced method allows engineers to digitally model the airflow around buildings, predicting wind pressures and their effects on the structure and others around it. 🌐 Thanks to CFD, detailed analyses can be conducted that go beyond simplified approximations, enabling the design of more efficient and secure structures. #StructuralEngineering #FluidDynamics #CFD #WindTunnelSimulation #StructuralDesign
To view or add a comment, sign in
-
💡 #Highcitedpaper #Korea Maritime & Ocean University 🌊 Title: CFD Simulations of the Effect of Equalizing Duct Configurations on Cavitating Flow around a Propeller 🔑 Keywords: computational #fluiddynamics (#CFD); #energy saving equalizing duct; #cavitation; #marine #propeller; #OpenFOAM 🔗 See more: https://lnkd.in/gYARXJmy 📜 Abstract:This study presented the results of a computational study of cavitating flows of a marine propeller with energy saving equalizing ducts. The main purpose of the study was to estimate the cavitating flows around a propeller with a duct, and to investigate the interaction between a duct and a propeller in cavitating flows. The INSEAN E779A propeller was used as a baseline model. Validation studies were conducted for non-cavitating and cavitating flows around a hydrofoil and a propeller. A comparison with the experimental data showed good agreement in terms of sheet cavity patterns and propulsion performances of the propeller. Various duct configurations have been presented, and it was found that a duct in front of the propeller had effects on the propeller’s cavitation and propulsion performance. Higher angles of attack of the duct showed a significant effect on the propeller’s cavitation behavior, especially with a small duct. The small duct lowered the cavitation inception radius with increase in angle of attack of the duct, while the large duct had more effect on the tip cavitation. The propeller with large duct gave higher thrust, however, the higher torque loading affected the propeller efficiency. Overall, it was found that the propeller with small duct provided a higher propeller efficiency.
To view or add a comment, sign in
-
Understanding fluid flow is crucial in many industries. Check out our latest blog post, 'Fluid Dynamics 101: Basics to Understanding How Fluids Flow,' and expand your knowledge! #Engineering #FluidDynamics #AtlanticValves https://lnkd.in/e4vEJSrU
Fluid Dynamics 101: Basics to Understanding How Fluids Flow
electricsolenoidvalves.com
To view or add a comment, sign in
-
💡 #Highcitedpaper #Korea Maritime & Ocean University 🌊 Title: Unresolved CFD and DEM Coupled Simulations on Scour around a Subsea Pipeline 🔑 Keywords: #EulerLagrange approach; #computationalfluiddynamics; #discreteelementmethod; #subsea #pipeline; #scour phenomenon 🔗 More: https://lnkd.in/d6xSfzyq 📜 Abstract:In this paper, numerical studies were carried out on scour around a subsea pipeline. A coupled solver between computational fluid dynamics (CFD) and discrete element method (DEM) was selected to simulate fluid flow and particle interactions. To select and validate the numerical model parameters in the solver, angles of repose and incipient motion were simulated. From the validation studies, the selected coefficient of rolling friction with spherical particles could predict the behavior of non-spherical particles. The fluid flow around the subsea pipeline was simulated, and the motion of individual soil particles was tracked. Particle motions were generated by the drag force, due to a high velocity. Three scour development process, such as onset of scour, tunnel erosion, and lee-wake erosion, were studied and discussed. The scour depth evolution showed good agreement with the experimental data. It was confirmed that the selected solver, with numerical model parameters, predicted the scour process around a subsea pipeline well.
To view or add a comment, sign in
Lecturer at Atlantic Technological University
6moIt is incredibly heartwarming to witness the interest in my research.