High-fidelity numerical simulations applied in unsteady aerodynamics, turbulence and aeroacoustics

• Grant number: 21/06448-0
• Support Opportunities: Research Grants - Young Investigators Grants - Phase 2
• Start date: April 01, 2022
• End date: March 31, 2027
• Field of knowledge: Engineering - Aerospace Engineering - Aerodynamics
• Principal Investigator: William Roberto Wolf
• Grantee: William Roberto Wolf
• Host Institution: Faculdade de Engenharia Mecânica (FEM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 13/03413-4 - Investigation of noise generation and propagation by aerodynamic configurations using computational aeroacoustics, AP.JP
• Associated scholarship(s): 24/20304-9 - Numerical simulations of unsteady effects in supersonic turbine configurations, BP.MS; 24/04341-1 - High-fidelity simulations and data-driven analysis of transitional and turbulent compressible flows over airfoils, BP.DR; 24/09969-9 - Computational aerodynamics and aeroacoustics of steady and unsteady airfoils envisioning the application in novel concepts of urban air mobility, BP.DR; + associated scholarships 23/08768-7 - High-fidelity simulations of rotor configurations: Analysis of unsteady aerodynamics and aeroacoustics, BP.PD; 22/12268-7 - Numerical simulation and linear analysis of turbulent-like dynamical systems, BP.IC; 22/08567-9 - Numerical investigation of an airfoil under light dynamic stall, BP.MS; 22/04292-5 - Application of dynamic mode decomposition techniques to unsteady flows, BP.IC - associated scholarships

Abstract

Unsteady aerodynamics plays a key role in the design of more efficient and quieter aircraft, helicopters, automobiles, wind and gas turbines, industrial fans and drones. In these devices, the unsteady flows are typically turbulent and, hence, improving our understanding of turbulece is of paramount importance. As an example, through a better comprehension of unsteady aerodynamics and turbulence, including attached and massively separated flows, it would be possible for engineers and scientists to design road vehicles and airplanes with reduced drag. This would, in turn, imply on fuel economy and, subsequently, reduction of both transportation costs and greenhouse gas emissions. Flow unsteadiness and turbulence also lead to aerodynamic noise generation, namely aeroacoustic noise, as a byproduct. It is important to mention that aeroacoustic noise has become an inherent part of the design of modern commercial aircraft due to a need to reduce perceived noise levels to meet ever-more-stringent requirements and regulations. Therefore, improving the capability for analysis of unsteady flows involving turbulence and aeroacoustics is a requirement for the energy and transportation industries. In this context, this project will tackle problems involving unsteady aerodynamics, turbulence and aeroacoustic noise generation through high-fidelity numerical simulations. The large databases generated by the simulations will be analyzed employing a suite of techniques such as flow modal decomposition, spectral analysis, linear hydrodynamic stability, machine learning and reduced order modeling. Through the application of these methods, we expect to gain a better understanding of the broad range of spatial and temporal phenomena that are inherent to unsteady aerodynamic flows. Studies will be conducted for three major problems with scientific and technological applications: 1) dynamic stall, 2) supersonic propulsion systems, and 3) noise generation by novel concepts of urban mobility. (AU)

Scientific publications

(30)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

HAMADA, GABRIEL Y. R.; WOLF, WILLIAM R.; PITZ, DIOGO B.; ALVES, LEONARDO S. DE B.. Stability and receptivity analyses of mixed convection in unstably stratified horizontal boundary layers. JOURNAL OF FLUID MECHANICS, v. 961, p. 18-pg., 2023-04-17. (13/08293-7, 21/06448-0, 22/00464-6)

RICCIARDI, TULIO R.; WOLF, WILLIAM R.; TAIRA, KUNIHIKO. ransition, intermittency and phase interference effects in airfoil secondary tones and acoustic feedback loo. JOURNAL OF FLUID MECHANICS, v. 937, MAR 2 2022. (19/20437-0, 18/11835-0, 21/06448-0, 13/08293-7)

MIOTTO, RENATO; WOLF, WILLIAM; GAITONDE, DATTA; VISBAL, MIGUEL. Pitch-Plunge Equivalence in Dynamic Stall of Ramp Motion Airfoils. ENERGY AND BUILDINGS, v. 277, p. 14-pg., 2022-11-14. (22/09196-4, 13/08293-7, 21/06448-0, 17/10795-1, 19/02335-6, 13/07375-0)

MIOTTO, RENATO; WOLF, WILLIAM; GAITONDE, DATTA; VISBAL, MIGUEL. Analysis of the onset and evolution of a dynamic stall vortex on a periodic plunging aerofoil. JOURNAL OF FLUID MECHANICS, v. 938, p. 29-pg., 2022-03-17. (13/07375-0, 17/10795-1, 19/02335-6, 21/06448-0)

LUI, HUGO F. S.; RICCIARDI, TULIO R.; WOLF, WILLIAM R.; BRAUN, JAMES; RAHBARI, IMAN; PANIAGUA, GUILLERMO. Unsteadiness of shock-boundary layer interactions in a Mach 2.0 supersonic turbine cascade. PHYSICAL REVIEW FLUIDS, v. 7, n. 9, p. 31-pg., 2022-09-08. (19/26196-5, 13/08293-7, 21/06448-0)

SIROTTO, JOSE R. L. N.; CORDIOLI, JULIO A. A.; NOGUEIRA, PETRONIO A. S.; CAVALIERI, ANDRE V. G.; SECCHI, MAICON; WOLF, WILLIAM R. R.. Acoustic Radiation of a Simplified Jet-Flap-Thrust Gate Configuration: Numerical and Experimental Investigation. FLOW TURBULENCE AND COMBUSTION, v. N/A, p. 21-pg., 2023-07-15. (21/06448-0)

MIOTTO, RENATO F.; WOLF, WILLIAM R.. Flow imaging as an alternative to non-intrusive measurements and surrogate models through vision transformers and convolutional neural networks. Physics of Fluids, v. 35, n. 4, p. 18-pg., 2023-04-01. (22/09196-4, 13/08293-7, 21/06448-0, 13/07375-0)

SILVA, LEANDRO JUNIO DE O.; WOLF, WILLIAM R.. Analysis of adverse pressure gradient effects in the boundary layer of a NACA0012 airfoil at high angle of attack. AIAA AVIATION 2023 FORUM, v. N/A, p. 11-pg., 2023-01-01. (13/08293-7, 22/00256-4, 21/06448-0)

MIOTTO, RENATO; WOLFT, WILLIAM. Prediction of airfoil dynamic stall response using convolutional neural networks. AIAA AVIATION 2023 FORUM, v. N/A, p. 10-pg., 2023-01-01. (13/07375-0, 13/08293-7, 22/09196-4, 21/06448-0)

LUI, HUGO F. S.; RICCIARDI, TULIO R.; WOLF, WILLIAM R.; CARLOS, A. J. B., JR.. Comparison of Shock-Boundary Layer Interactions in Adiabatic and Isothermal Supersonic Turbine Cascades. AIAA AVIATION 2022 FORUM, v. N/A, p. 8-pg., 2022-01-01. (13/08293-7, 21/06448-0, 19/26196-5)

ZUCATTI, VICTOR; WOLF, WILLIAM R.. A numerical investigation of data-driven closure techniques for POD-Galerkin reduced order models. AIAA AVIATION 2022 FORUM, v. N/A, p. 13-pg., 2022-01-01. (13/08293-7, 21/06448-0, 18/11410-9)

RIBEIRO, BERNARDO LUIZ; DANTAS, CAYAN; WOLF, WILLIAM. Intermittency of a transitional airfoil flow with laminar separation bubble solved by the lattice-Boltzmann method. AEROSPACE SCIENCE AND TECHNOLOGY, v. 158, p. 15-pg., 2025-01-02. (13/08293-7, 21/06448-0, 23/08768-7)

RIBEIRO, BERNARDO LUIZ R.; DANTAS, CAYAN A.; WOLF, WILLIAM R.. Assessment of Transitional Airfoil Flows through the Lattice-Boltzmann Method Part II: Finite Wing Effects. AIAA AVIATION FORUM AND ASCEND 2024, v. N/A, p. 11-pg., 2024-01-01. (21/06448-0, 23/08768-7)

SILVA, LEANDRO J.; WOLF, WILLIAM R.. Pressure gradient effects on coherent structures and anisotropy of a turbulent boundary layer over a NACA0012 airfoil at 12° angle of attack. AIAA AVIATION FORUM AND ASCEND 2024, v. N/A, p. 9-pg., 2024-01-01. (13/08293-7, 22/00256-4, 21/06448-0)

DEDA, TARCISIO; WOLF, WILLIAM R.; DAWSON, SCOTT T. M.. Backpropagation of neural network dynamical models applied to flow control. THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS, v. 37, n. 1, p. 25-pg., 2023-02-25. (13/08293-7, 21/06448-0, 22/00469-8, 19/19179-7)

DEDA, TARCISIO C.; WOLF, WILLIAM R.; DAWSON, SCOTT T. M.. Assessing the robustness of neural networks trained for closed loop flow stabilization. AIAA AVIATION FORUM AND ASCEND 2024, v. N/A, p. 10-pg., 2024-01-01. (19/19179-7, 13/08293-7, 21/06448-0, 22/00469-8)

FEITOSA, LUCAS; MIOTTO, RENATO; WOLF, WILLIAM. Analysis of dynamic stall for a simplified single blade vertical axis wind turbine configuration. AIAA AVIATION FORUM AND ASCEND 2024, v. N/A, p. 10-pg., 2024-01-01. (22/08567-9, 13/07375-0, 13/08293-7, 22/09196-4, 21/06448-0)

LUI, HUGO F. S.; WOLF, WILLIAM R.; RICCIARDI, TULIO R.; GAITONDE, DATTA, V. Analysis of streamwise vortices in a supersonic turbine cascade. AIAA AVIATION FORUM AND ASCEND 2024, v. N/A, p. 10-pg., 2024-01-01. (13/08293-7, 21/06448-0, 19/26196-5, 21/14199-0)

DANTAS, CAYAN A.; RIBEIRO, BERNARDO LUIZ R.; WOLF, WILLIAM R.. Assessment of Transitional Airfoil Flows through the Lattice-Boltzmann Method Part I: Spanwise Periodic Flows. AIAA AVIATION FORUM AND ASCEND 2024, v. N/A, p. 11-pg., 2024-01-01. (13/08293-7, 21/06448-0, 23/08768-7)

HAMADA, GABRIEL Y. R.; LUI, HUGO F. S.; WOLF, WILLIAM R.; JUNQUEIRA-JUNIOR, CARLOS, JR.. Characterization of boundary layers on isothermal and adiabatic curved surfaces of a supersonic turbine cascade. AIAA AVIATION FORUM AND ASCEND 2024, v. N/A, p. 12-pg., 2024-01-01. (13/08293-7, 21/06448-0, 19/26196-5, 22/00464-6)

LUI, HUGO F. S.; WOLF, WILLIAM R.; RICCIARDI, TULIO R.; GAITONDE, DATTA V.. Mach number effects on shock-boundary layer interactions over curved surfaces of supersonic turbine cascades. THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS, v. 38, n. 4, p. 28-pg., 2024-07-11. (13/08293-7, 19/26196-5, 21/06448-0, 21/14199-0)

FEITOSA, LUCAS; MIOTTO, RENATO; WOLF, WILLIAM. Analysis of intermittent vortex pairing for a transitional flow past a NACA0012 airfoil via a multidimensional empirical mode decomposition. AIAA AVIATION FORUM AND ASCEND 2024, v. N/A, p. 9-pg., 2024-01-01. (13/08293-7, 22/09196-4, 21/06448-0, 22/08567-9)

DE O SILVA, LEANDRO JUNI; WOLF, WILLIAM R.; VINUESA, RICARDO. Adverse-pressure-gradient effects on extreme events and intermittency in the turbulent boundary layer of a NACA0012 at 12° angle of attack. AIAA AVIATION FORUM AND ASCEND 2024, v. N/A, p. 13-pg., 2024-01-01. (13/08293-7, 22/00256-4, 21/06448-0, 23/01657-5)

RICCIARDI, TULIO R.; WOLF, WILLIAM R.. Switch of tonal noise generation mechanisms in airfoil transitional flows. PHYSICAL REVIEW FLUIDS, v. 7, n. 8, p. 21-pg., 2022-08-03. (18/11835-0, 13/08293-7, 21/06448-0)

MIOTTO, RENATO; WOLF, WILLIAM; GAITONDE, DATTA; VISBAL, MIGUEL. Pitch-Plunge Equivalence in Dynamic Stall of Ramp Motion Airfoils. AIAA JOURNAL, v. 61, n. 1, p. 15-pg., 2023-01-01. (22/09196-4, 13/08293-7, 21/06448-0, 17/10795-1, 19/02335-6, 13/07375-0)

MIOTTO, RENATO; ZIGUNOV, FERNANDO; WOLF, WILLIAM. Assessment of Pressure Estimation Methods Using Image Velocimetry Data: Insights from Unstructured Mesh Analysis. AIAA AVIATION FORUM AND ASCEND 2024, v. N/A, p. 13-pg., 2024-01-01. (13/08293-7, 22/09196-4, 21/06448-0, 23/13431-1)

HAMADA, GABRIEL Y. R.; LUI, HUGO F. S.; WOLF, WILLIAM R.; RICCIARDI, TULIO R.; JUNQUEIRA-JUNIOR, CARLOS. Thermal boundary condition effects on shock boundary layer interactions of a supersonic turbine cascade. AIAA AVIATION 2023 FORUM, v. N/A, p. 9-pg., 2023-01-01. (13/08293-7, 21/06448-0, 19/26196-5, 22/00464-6)

DEDA, TARCISIO C.; WOLF, WILLIAM R.; DAWSON, SCOTT T. M.. Neural networks in feedback for flow analysis and control. PHYSICAL REVIEW FLUIDS, v. 9, n. 6, p. 35-pg., 2024-06-12. (22/00469-8, 13/08293-7, 21/06448-0, 19/19179-7)

FEITOSA, LUCAS; MIOTTO, RENATO; WOLF, WILLIAM. Analysis of coherent structures in dynamic stall via empirical mode decomposition and dynamic mode decomposition. AIAA AVIATION 2023 FORUM, v. N/A, p. 12-pg., 2023-01-01. (22/08567-9, 13/08293-7, 21/06448-0, 22/09196-4, 13/07375-0)

DEDA, TARCISIO C.; WOLF, WILLIAM R.; DAWSON, SCOTT T. M.. Application of Neural Network Surrogate Models for Flow Control. AIAA AVIATION 2023 FORUM, v. N/A, p. 10-pg., 2023-01-01. (13/08293-7, 19/19179-7, 21/06448-0, 22/00469-8)