11 Result(s)
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Chapter
Novel Spanwise Vortex Generator for Separation Control on BFS: Experiment and Simulation
This paper is on the effects of a novel span vortex generator on the periodic components of the turbulent shear layers and the Reynolds stresses. The turbulence modelling approach is 3D simulations IDDES, a hy...
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Chapter
Effects of DBD Plasma Frequency, Voltage, and Modulation on BFS Flow Reattachment
The work in this paper presents the results from numerical investigation of Dielectric Barrier Discharge plasma actuators, applied on a backward facing step geometry. 2D and 3D simulations were carried out in...
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Chapter
Hybrid RANS-LES Simulations of Incipient Airfoil Trailing Edge Separation
Hybrid RANS-LES, such as, Detached Eddy Simulation (DES) based models offer significant advantages over LES or RANS for massively separated flows. However, in cases of mild separation, their performance is not...
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Chapter
Active Flow Control Strategies and Tools for Turbulent Flows
In this chapter we present considerations on the impact of the turbulence characteristics of most flows of industrial interest on the flow control interpretations or strategies. In the second part we will give...
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Chapter
Plasma Models in Hybrid RANS-LES Simulation for Backward Facing Step Flow Control
This paper presents a study on the effects of a single discharge barrier dielectric barrier device on the periodic components of the turbulent shear layers and the Reynolds stresses. 3D simulations using impro...
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Chapter
Description of the Test Cases
The high-level objective of MARS project was to understand the formation and behaviour of turbulent structures which affects the Reynolds stress and skin friction. The aim was, once understood, to apply flow ...
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Article
Characteristics of Oscillations in Supersonic Open Cavity Flows
Characteristics of oscillations in supersonic open cavity flows are investigated numerically using hybrid RANS/LES (Reynolds-Averaged Navier-Stokes/Large Eddy Simulation) method. The oscillation regimes and fe...
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Chapter and Conference Paper
Drag Reduction for Transonic Wings Combining Reduced Wing Sweep with Shock Control
In this paper, the potential of unlocking wing sweep on aircraft drag reduction is explored in the context of recent development in shock control by three dimensional bumps on natural laminar flow(NLF) wings. ...
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Chapter and Conference Paper
Numerical Simulation of Thermal-Chemical Non-equilibrium and Radiating Hypersonic Flow
When a reentry capsule flies at a high speed through the earth atmosphere, the temperature of the shock layer formed around it may become sufficiently high to emit a significant amount of radiation. The radiat...
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Chapter and Conference Paper
Surrogate-Based Multi-objective Aerothermodynamic Design Optimization of Hypersonic Spiked Bodies
Among various design requirements, reducing both drag and aerodynamic heating is the most crucial in the design of hypersonic vehicles. Pointed slender bodies generate lower drag compared with blunt bodies at ...
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Chapter and Conference Paper
Sparse Quasi- Newton Method for Navier- Stokes Solution
A sparse finite difference Newton method and a sparse quasi-Newton method have been applied to the Navier-Stokes solution. Much faster convergence to the steady state has been achieved compared to the conventi...
