• Aerodynamics
• Fluid Mechanics
• Flight Mechanics/Performance
• Aeroelastics

• Numerical methods for DNS/LES
• Turbulent flow
• Aeroacoustics
• Experimental (optical) measurement techniques
• Propeller and Engine noise
• Noise reduction by porous materials and/or surface treatments
• Sidemirror noise (Automotive)

• Member of Senate HAW Hamburg
• Vice-Director Research and Technology Transfer Center "Future Air Mobility"
• Representative "Duales Studium" for Dept. Automotive and Aeronautical Engineering

Current PhD students:

1. Steffen Kroll: TU Braunschweig, external at Volkswagen AG, Wolfsburg (doctoral supervisor)
2. Steffen Huettig: TU Braunschweig, external at Volkswagen AG, Wolfsburg (doctoral supervisor)
3. Zhangchen Song: Beihang University (Beijing University of Aeronautics and Astronautics BUAA), China (Co-supervisor)

Former PhD-students:

• Varun B. Ananthan (TU Braunschweig), “Overset-LES of Passive Methods for Trailing Edge Noise Reduction”. PhD-committee: Prof. Dr. Ir. R.A.D. Akkermans, Prof. Dr. S.C. Langer (TU Braunschweig), und Prof. Dr. W. Schröder (RWTH Aachen). 15.07.2021
• Paul Bernicke (TU Braunschweig), “Overset-LES and its application to noise prediction”. PhD-committee: Prof. Dr. Ir. R.A.D. Akkermans und Prof. S. Jakirlic (TU Darmstradt). 21.02.2020 
• Ali H. Dawi (Volkswagen AG), “Compressible CFD simulations of aeroacoustics for automotive applications”. PhD-committee: Prof. Dr. Ir. R.A.D. Akkermans und Prof Dr. Ir B.J. Geurts (Utwente, NL). 04.07.2019

Articles in international journals with peer-review (see 'www.researchgate.net/profile/Rad_Akkermans' for a complete list):

[39] W. Tang, P. Liu, T. Hu, Q. Qu, H. Gue, Y. Liu, R.A.D. Akkermans, Effect of Gurney Flaps on a Nonslender Delta Wing During Large-amplitude and High-frequency Dynamic Pitching, Aerospace Science and Technology, Vol. 142, 108715, 2023.

[38] V.B. Ananthan, R.A.D. Akkermans, T. Hu, P.Q. Liu, D. Burzynski, Effects of localized application of porous material on trailing-edge noise of a circulation-controlled wing, International Journal of Heat and Fluid Flow, Vol. 103, 109209, 2023.

[37] X. Geng, P. Liu, T. Hu, Q. Qu, J. Dai, C. Lyu, Y. Ge, R.A.D. Akkermans, Multi-fidelity optimization of a quiet propeller based on deep deterministic policy gradient and transfer learning, Aerospace Science and Technology, Vol. 137, 108288, 2023.

[36] V.B. Ananthan, R.A.D. Akkermans, Trailing-Edge Noise Reduction Using Bio-inspired Finlets, Journal of Sound and Vibration, Vol. 549, 117553, 2023.

[35] C. Lyu, P. Liu, T. Hu, X. Geng, Q. Qu, T. Sun, R.A.D. Akkermans, Hybrid Method for Local-Wall Refinement in Lattice Boltzmann Method Simulations, Physics of Fluids, Vol. 35, 017103, 2023.

[34] C. Lyu, P. Liu, T. Hu, X. Geng, T. Sun, R.A.D. Akkermans, A sliding mesh approach to the Lattice Boltzmann Method based on non-equilibrium extrapolation and its application in rotor flow simulation, Aerospace Science and Technology, Vol. 128, 107755, (2022).

[33] V.B. Ananthan, R.A.D. Akkermans, T. Hu, P. Liu. N. Rathje, Trailing-Edge Noise Reduction Potential of a Locally Applied Shallow Dimpled Surface, Journal of Sound and Vibration, Vol. 525, 116745, (2022).

[32] V.B. Ananthan, R.A.D. Akkermans, D. Kozulovic, Trailing-edge noise reduction of a wing by a surface modification, Inter-Noise2021 Conference Proceedings (reviewed), pp. 1-8, (2021).

[31] Q. Chen, T. Hu, P. Liu, Q. Qu, H. Guo, R.A.D. Akkermans, The dynamical vortical flow behaviour on a coplanar canard configuration during large-amplitude-pitching, Aerospace Science and Technology, Vol. 112, 106553, (2021).

[30] P. Bernicke, R.A.D. Akkermans, Hybrid Overset-LES Simulations of Noise Reduction Concepts of Loaded Airfoils, Journal of Physics: Conference Series, Vol. 1909, pp. 1-8, (2021).

[29] T. Hu, Y. Zhao, P. Liu, Q. Qu, H. Guo, R.A.D. Akkermans, Investigation on lift characteristics of a double delta wing pitching in various reduced frequencies, Journal of Aerospace Engineering, (2021).

[28] P. Bernicke, V.B. Ananthan, R.A.D. Akkermans, J. Dierke, R. Ewert, Scale-Resolving Simulations of Aeroacoustic Sound from Coanda Flaps, In: Notes on Numerical Fluid Mechanics and Multidisciplinary Design, New Results in Numerical and Experimental Fluid Mechanics, Vol. 135, 529-543, (2021).

[27] V.B. Ananthan, P. Bernicke, R.A.D. Akkermans, Aeroacoustic Analysis of a Circulation-Controlled High-Lift Flap by Zonal Overset Large-Eddy Simulation, AIAA Journal, Vol. 58, pp. 5294-5305, (2020).

[26] Q. Chen, T. Hu, P. Liu, Y. Liu, Q. Qu, H. Guo, R.A.D. Akkermans, Experiments on asymmetric vortex pair interaction with the ground, Experiments in Fluids, Vol. 61, No. 150 (2020).

[25] T. Hu, C. Cheng, P. Liu, Y. Huang, Z. Zhang, Q. Qu, H. Guo, R.A.D. Akkermans, Control of self-induced roll oscillations using sinusoidal leading-edge for low-aspect-ratio wings, Experiments in Fluids, Vol. 61, Article number: 166, (2020).

[24] Y. Yi, P. Liu, T. Hu, Q. Qu, G. Eitelberg, R.A.D. Akkermans, Dynamic lift characteristics of nonslender delta wing in large-amplitude-pitching, Aerospace Science and Technology, Vol. 105, 105937, (2020)

[23] V.B. Ananthan, P. Bernicke, R.A.D. Akkermans, P. Liu, T. Hu, Effect of Porous Material on Trailing Edge Sound Sources of a Lifting Airfoil by Zonal Overset-LES, Journal of Sound and Vibration, Vol. 480, 115386, (2020)

[22] P. Bernicke, R.A.D. Akkermans, R. Ewert, J. Dierke, An Acoustic Relaxation Term for Damping and Forcing of Waves, AIAA Journal, Vol. 58, No. 5, pp. 2029-2041, (2020).

[21] P. Bernicke, R.A.D. Akkermans, V.B. Ananthan, R. Ewert, J. Dierke, L. Rossian, A Zonal Noise Prediction Method for Trailing-Edge Noise with a Porous Model, International Journal of Heat and Fluid Flow, Vol. 80, 108469-1-11, (2019).

[20] A.H. Dawi, R.A.D. Akkermans, Direct Noise Computation of a Generic Vehicle Model using a Finite Volume Method, Computers and Fluids, Vol. 191, 104243-1-12, 2019.

[19] Y. Wang, P. Liu, T. Hu, Q. Qu, Q. Chen, R. Akkermans, Experimental investigations on the interaction of the single co-rotating vortex with the ground, AIAA Journal, Vol. 57, pp. 499-512, 2019.

[18] T. Hu, P. Liu, Y. Yuan, Q. Qu, R. Akkermans, Experimental investigations on co-rotating vortex pair merger in convergent/divergent channel flow with single-side wall deflection, Experiments in Fluids, Vol. 59, pp. 188.1-18, (2018).

[17] A. Dawi, R.A.D. Akkermans, Spurious Noise in Direct Noise Computation with a Finite Volume Method for Automotive Applications, International Journal of Heat and Fluid Flow, Vol. 72, pp. 243-256, (2018).

[16] A. Dawi, R.A.D. Akkermans, Direct and Integral Noise Computation of Two Square Cylinders in Tandem Arrangement, Journal of Sound and Vibration, Vol. 436, pp. 138–154, (2018).

[15] R.A.D. Akkermans, P. Bernicke, R. Ewert, J. Dierke, Zonal Overset-LES with Stochastic Volume Forcing for Trailing-Edge Noise Sources, International Journal of Heat and Fluid Flow, Vol. 70, pp. 336–347, (2018).

[14] P. Bernicke, R.A.D. Akkermans, R. Ewert, J. Dierke, Overset-LES with Stochastic Forcing for Sound Source Simulation, In: Notes on Numerical Fluid Mechanics and Multidisciplinary Design, New Results in Numerical and Experimental Fluid Mechanics XI, Vol. 136, pp. 601-610, (2018).

[13] R.A.D. Akkermans, A. Stuermer, J.W. Delfs, Active Flow Control for Interaction Noise Reduction of Contra-Rotating Open Rotors, AIAA Journal, Vol. 54, pp. 1413-1423, (2016).

[12] R.A.D. Akkermans, N. Buchmann, J. Dierke, R. Ewert, Overset DNS with Application to Homo-geneous Decaying Turbulence, In: Notes on Numerical Fluid Mechanics and Multidisciplinary Design New Results in Numerical and Experimental Fluid Mechanics X, Vol. 132, pp. 699-707, (2016).

[11] R.A.D. Akkermans, R. Ewert, S.M.A. Moghadam, J. Dierke, N. Buchmann, Overset DNS with Application to Sound Source Prediction, In: Notes on Numerical Fluid Dynamics and Multidisciplinary Design, Vol. 130, Springer-Verlag, pp. 59-68, (2015).

[10] A. Stuermer, J. Yin, R.A.D. Akkermans, Progress in Aerodynamic and Aeroacoustic Integration of CROR Propulsion Systems, The Aeronautical Journal, Vol. 118, pp. 1137-1158, (2014).

[9] A. Stuermer, R.A.D. Akkermans, Multidisciplinary Analysis of CROR Propulsion Systems: DLR Activities in the JTI SFWA Project, CEAS Aeronautical Journal, Vol. 5, pp 265-277, (2014).

[8] R.A.D. Akkermans et al., Aeroacoustic and Aerodynamic Importance of an Unequal Rotor Rotation Speeds of a CROR, In: Notes on Numerical Fluid Mechanics and Multidisciplinary Design New Results in Numerical and Experimental Fluid Mechanics IX, Vol. 124, Springer-Verlag, pp. 593-600, (2014).

[7] A. Stuermer, R.A.D. Akkermans, J.W. Delfs, Assessment of Front Rotor Trailing Edge Blowing for the Reduction of Open Rotor Interaction Noise, In: Notes in Numerical Fluid Mechanics and Multidisciplinary Design New Results in Numerical and Experimental Fluid Mechanics IX, Vol. 124, Springer Verlag, pp. 609-618, (2014).

[6] R.A.D. Akkermans, A.P.C. Holten, L.P.J. Kamp, H.J.H. Clercx, G.J.F. van Heijst, Array of vortices in shallow fluids: Three-dimensional structure and dispersion, European Journal of Mechanics B/Fluids, Vol. 34, pp. 131-145, (2012).

[5] R.A.D. Akkermans, L.P.J. Kamp, H.J.H. Clercx, G.J.F. van Heijst, Three-dimensional flow in electromagnetically driven shallow two-layer fluids, Physical Review E, Vol. 82, 026314-1-11, (2010).

[4] A.R.Cieslik, R.A.D. Akkermans, L.P.J. Kamp, H.J.H. Clercx, G.J.F. van Heijst, Dipole-wall collision in a shallow fluid layer, European Journal of Mechanics - B/Fluids, Vol. 28, pp. 397-404, (2009).

[3] R.A.D. Akkermans, A.R. Cieslik, L.P.J. Kamp, R.R. Trieling, H.J.H. Clercx, and G.J.F. van Heijst, The three-dimensional structure of an electromagnetically generated dipolar vortex in a shallow fluid layer, Physic of Fluids, Vol. 20, pp. 116601-1-15, (2008).

[2] R.A.D. Akkermans, L.P.J. Kamp, H.J.H. Clercx, G.J.F. van Heijst, Intrinsic three-dimensionality in electromagnetically driven shallow flows, EPL EuroPhysics Letters, Vol. 83, pp. 24001-1-6, (2008).

[1] R.P.J. Kunnen, H.J.H. Clercx, B.J. Geurts, L.J. van Bokhoven, R.A.D. Akkermans, R. Verzicco, Numerical and experimental investigation of structure function scaling in turbulent Rayleigh-Bernard convection, Physical Review E, Vol. 77, pp. 016302-1-13, (2008).

Dissertation:

R.A.D. Akkermans, 3D Structures and Dispersion in Shallow Fluid Layers, PhD-thesis, Eindhoven University of Technology, The Netherlands, (2010). doi.org/10.6100/IR675782