The Super-Alfvenic Rotational Instability in Accretion Disks about Black Holes
status: published
Validation of a Wave Heated 3D MHD Coronal-wind Model using Polarized Brightness and EUV Observations
status: published
LEGA-C: Analysis of Dynamical Masses from Ionized Gas and Stellar Kinematics at z ∼ 0.8
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Published in The Astrophysical Journal
We compare dynamical mass estimates based on spatially extended stellar and ionized gas kinematics (M dyn,* and M dyn,eml, respectively) of 157 star-forming galaxies at 0.6 ≤ z
Boundary layer transition over a low reynolds number rotor: effects of roughness and freestream turbulence
Two separate experiments are conducted on a three bladed NACA0012 rotor operating at low Reynolds numbers using phase-locked infrared thermography coupled with simultaneous force and torque measurements. The first, focuses on the effects of freestream turbulence on boundary layer transition over the suction side of the aerofoil of the rotor in an a...
Progress from ASDEX Upgrade experiments in preparing the physics basis of ITER operation and DEMO scenario development
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Published in Nuclear Fusion
An overview of recent results obtained at the tokamak ASDEX Upgrade (AUG) is given. A work flow for predictive profile modelling of AUG discharges was established which is able to reproduce experimental H-mode plasma profiles based on engineering parameters only. In the plasma center, theoretical predictions on plasma current redistribution by a dy...
Numerical investigation of the influence of shear and thermal stratification on the wind turbine tip-vortex stability
The interaction between wind turbine wakes and atmospheric turbulence is characterised by complex dynamics. In this study, two major components of the atmospheric boundary layer dynamics have been isolated, namely, the mean velocity profile shear and the thermal stratification, to examine their impact on the near-wake development by undertaking a s...
Analysis of interscale energy transfer in a boundary layer undergoing bypass transition
The Kármán–Howarth–Monin–Hill equation is employed to study the production and interscale energy transfer in a boundary layer undergoing bypass transition due to free-stream turbulence. The energy flux between different length scales is calculated at several streamwise locations covering the laminar, transitional and turbulent regimes. Maps of scal...
Numerical Assessment of Turbulence-Cascade Noise Reduction and Aerodynamic Penalties from Serrations
This work is related to the investigation of innovative stator designs aiming to reduce the dominant interaction noise in aeroengines. The study of turbulent structures definition is crucial for the accurate prediction of broadband noise radiation from passive treatments, as leading-edge serrations studied here. A modified Fourier modes-based metho...
Trailing-Edge Noise Prediction by Solving Helmholtz Equation with Stochastic Source Term
status: published
Predictions for Gravity-mode Periods and Surface Abundances in Intermediate-mass Dwarfs from Shear Mixing and Radiative ...
status: published
