2022
T. Engels, H. Truong, M. Farge, D. Kolomenskiy and K. Schneider.
Computational aerodynamics of insect flight using volume penalization, review, Comptes Rendus Mécanique, 2022, link (open access), doi, PDF-File.
H.-N. Wehmann, T. Engels, F.-O. Lehmann, Flight activity and age cause wing damage in house flies. J. Exp. Biol. 225 (1):jeb242872, link, Report by IDW (in German), Press release by Univ. Rostock, 2022
S. Farisenkov, D. Kolomenskiy, P. Petrov, T. Engels, N. Lapina, F.-O. Lehmann, R. Onishi, H. Liu, A. Polilov, Novel flight style and light wings boost flight performance of tiny beetles, Nature 602, 96–100, 2022, biorXiv, link (open access), video report, article in le monde (french)
Nature cover:
P. Krah, T. Engels, K. Schneider, J. Reiss, Wavelet Adaptive Proper Orthogonal Decomposition for Large Scale Flow Data. Adv. Comput. Math., 48:10, link, arXiv, 2022
M. Jaffar-Bandjee, T. Steinmann, G. Krijnen, T. Engels, J. Casas, Olfactory performance helps explain the coexistence of pectinate and cylindrical antennae among moths, preprint, 2022
2021
T. Engels, D. Kolomenskiy, F.-O. Lehmann, Flight efficiency is key to diverse wing morphologies in small insects, J. R. Soc. Interface 18 20210518, link (open access), supplementary material, 2021
F.-O. Lehmann, H. Wang, T. Engels, Vortex trapping recaptures energy in flying fruit flies, Nature Sci. Rep. 11, 6992 (open access), link, 2021
T. Engels, K. Schneider, J. Reiss and M. Farge, A wavelet-adaptive method for multiscale simulation of turbulent flows in flying insects, Commun. Comput. Phys., 30, 1118-1149., arXiv:1912.05371, link, article, supplementary material, dataset (parameters for reproduction), 2021
H. Truong, T. Engels, H.-N. Wehmann, D. Kolomenskiy, F.-O. Lehmann. K. Schneider, An experimental data-driven mass-spring model of flexible Calliphora wings, Bioinspir. Biomim., 17(2), 026003, link, 2022
2020
D. Kolomenskiy,S. Farisenkov, T. Engels, N. Lapina, P. Petrov, F.-O. Lehmann, R. Onishi, H. Liu, A. Polilov, Aerodynamic performance of a bristled wing of a very small insect. Exp. Fluids 64, 194, URL (open access), 2020
S. Krishna, M. Cho, H.-N. Wehmann, T. Engels, F.-O. Lehmann. Wing Design in Flies: Properties and Aerodynamic Function. Insects, PDF-File, link, 2020
H. Truong, T. Engels, D. Kolomenskiy and K. Schneider.
Influence of wing flexibility on the aerodynamic performance of a tethered
flapping bumblebee. Theoretical & Applied Mechanics Letters,
10(6): 382-389. doi: 10.1016/j.taml.2020.01.056, PDF-File, link, 2020
H. Truong, T. Engels, D. Kolomenskiy, K. Schneider. In R. Deiterding, M. Domingues and K. Schneider (eds.) Cartesian CFD Methods for Complex Applications: thematic mini-symposium contributions from ICIAM 2019. International Congress on Industrial and Applied Mathematics (15/07/19 – 19/07/19) SEMA SIMAI Springer Series, Springer, pp. 1-17. 2021, PDF-File, arXiv
M. Riebeck, “Experimental study of an active grid for generation of turbulence at low mean speed”, Masters thesis at TU Berlin, 2020
T. Engels, H.-N. Wehmann, F.-O. Lehmann. Three-dimensional wing structure attenuates aerodynamic efficiency in flapping fly wings. J. R. Soc. Interface, PDF-File, URL, SupplementaryMaterial 2020
H. Truong, T. Engels, D. Kolomenskiy, K. Schneider. A mass-spring fluid-structure interaction solver: application to flexible revolving wings. Computers & Fluids 200:104426, URL, DOI, PDF-File, arXiv, 2020
2019
F.-O. Lehmann, H.-N. Wehmann. Aerodynamic interference depends on stroke plane spacing and wing aspect ratio in damselfly model wings. Special issue of Int. J. Odonatology, link, 2019
D. Kolomenskiy, S. Ravi, R. Xu, K. Ueyama, T. Jakobi, T. Engels, T. Nakata, J. Sesterhenn, K. Schneider, R. Onishi and H. Liu. The dynamics of passive feathering rotation in hovering flight of bumblebees. J. Fluids Struct, 102628, 2019, URL, PDF-File
T. Engels, D. Kolomenskiy, K. Schneider, M. Farge. F.-O. Lehmann, J. Sesterhenn. Impact of turbulence on flying insects in tethered and free flight: High-resolution numerical experiments, Phys. Rev. Fluids 4, 013103, 2019. PDF-File, URL, arXiv
, Local deformation and stiffness distribution in fly wings, Biol. Open, 8:bio038299, 2019, PDF-file, URL
2018
D. Kolomenskiy, S. Ravi, R. Xu, K. Ueyama, T. Jakobi, T. Engels, T. Nakata, J. Sesterhenn, M. Farge, K. Schneider, R. Onishi and H. Liu. “The Dynamics of Bumblebee Wing Pitching
Rotation: Measurement and Modelling”, in proceedings IUTAM Symposium on Critical flow dynamics involving moving/deformable structures with design applications, June 18-22, 2018, Santorini, Greece, PDF-File
M. Sroka, T. Engels, P. Krah, S. Mutzel, K. Schneider and J. Reiss. “An Open and Parallel Multiresolution Framework Using Block-Based Adaptive Grids”. Active Flow and Combustion Control, 305–319, 2018, PDF-File, arXiv, URL
“Three-dimensional simulations of flapping fliers using a multiresolution approach”, internal report, Thomas Engels, 2018, PDF-File
“Numerical modeling and simulation of a flapping flexible simplified insect wing vein”, completed master thesis at Aix Marseille Université. Student: Ranjan Dhakal.PDF-File
“Modélisation de mouvement des ailes d’insectes flexible dans un fluide en utilisant un modèle masse-ressort”, completed master thesis at Aix Marseille Université. Student: Kevin Logan. PDF-File
T. Engels, D. Kolomenskiy, K. Schneider, M. Farge, F.-O. Lehmann and J. Sesterhenn. Helical vortices generated by flapping wings of bumblebees. Fluid Dyn. Res. 50(1):011419, 2018, URL, arXiv:1803.07330, PDF-File
2017
T. Engels, D. Kolomenskiy, K. Schneider, M. Farge, F.-O. Lehmann and J. Sesterhenn. Bumblebee flight in turbulence: high resolution numerical simulations, APS Gallery of fluid motion, 2017, https://doi.org/10.1103/APS.DFD.2017.GFM.V0079, YouTube Direct
T. Engels, D. Kolomenskiy, K. Schneider and J. Sesterhenn. Numerical simulation of vortex-induced drag of elastic swimmer models. Theor. Appl. Mech. Lett. 7(5):280-285, 2017, PDF-file, URL, arXiv:1803.07316
“Modélisation et simulation numérique de l’interaction fluide structure pour les écoulement bidimensionnels”, completed master thesis at Aix Marseille Université. Student: Manigand Morgan & Merrouch Amine.PDF-File
“Turbulence generated by fractal Trees — PIV measurements and comparison with numerical data”, completed master thesis at TU Berlin. Student: Marc Dreissigacker. PDF-file
“Numerische Modellierung der Fluid-Struktur Wechselwirkung schwebender Körper”, completed master thesis at TU Berlin. Student: Vyacheslav Boyko.
PDF-File.
“Numerische Modellierung der Fluid-Struktur Interaktion fraktaler Bäume”, completed master thesis at TU Berlin. Student: Elias Büchner.
PDF-File.
2016
D. Kolomenskiy, S. Ravi, T. Takabayashi, T. Ikeda, K. Ueyama, T. Engels, A. Fisher, H. Tanaka, K. Schneider, J. Sesterhenn and H. Liu. Added costs of insect-scale flapping flight in unsteady airflows. preprint, 2016, arXiv:1610.09101. PDF-File.
T. Engels, D. Kolomenskiy, K. Schneider, F.O. Lehmann and J. Sesterhenn. Der Hummelflug in Turbulenz. Physik in unserer Zeit, 47(3), 111-112, 2016, Link, PDF-File.
T. Engels, D. Kolomenskiy, K. Schneider, F.O. Lehmann and J. Sesterhenn. Bumblebee flight in heavy turbulence. Phys. Rev. Lett., 116, 028103, 2016. PDF-File // Supplementary-Material // CORRIGENDUM // Article in TU Intern (in german) // Sueddeutsche Zeitung (in german, scan) // sueddeutsche URL // arXiv:1512.07614 // APS Focus article // Deutsches Bienenjournal // N24 (in german)
T. Engels, D. Kolomenskiy, K. Schneider and J. Sesterhenn. FluSI: A novel parallel simulation tool for flapping insect flight using a Fourier method with volume penalization. SIAM J. Sci. Comp., 38(5), S03-S24, 2016, PDF-file, arXiv:1506.06513
D. Kolomenskiy, M. Maeda, T. Engels, H. Liu, K. Schneider and J.-C. Nave. Aerodynamic ground effect in fruitfly sized insect takeoff. PLoS ONE, 2016, 11, e0152072, PDF-File, arXiv:1504.04484
S. Ravi, D. Kolomenskiy, T. Engels, K. Schneider, C. Wang, J. Sesterhenn and H. Liu.
Bumblebees minimize control challenges by combining active and passive modes in unsteady winds. Sci. Rep., 6, 35043, 2016, PDF-File
2015
T. Engels. Numerical Modeling of Fluid-Structure Interaction in Bio-Inspired Propulsion. PhD Thesis, 2015. PDF-File // HAL-open archive
T. Engels, D. Kolomenskiy, K. Schneider and J. Sesterhenn. Numerical simulation of fluid-structure interaction with the volume penalization method.
J. Comput. Phys., 281, 96-115, 2015 PDF-file.
2013
D. Kolomenskiy, T. Engels and K. Schneider. Numerical Modelling of Flexible Heaving Foils. Journal of Aero Aqua Bio-mechanisms, 3(1), 22-28, 2013, PDF. URL
T. Engels, D. Kolomenskiy, K. Schneider and J. Sesterhenn. Two-dimensional simulation of the fluttering instability using a pseudospectral method with volume penalization. Comput. Struct., 122, 101-113, 2013, PDF-File.
Conference Talks
T. Engels. Computational Aerodynamics of Insects in Turbulent Flows. Invited talk at the 2nd International Workshop on Insect bio-inspred microtechnology, Grenoble, France, 21.11.2019
T. Engels, M. Farge. Wavelet-based adaptive computation of multiscale flows produced by complex time-dependent geometries: applications to flapping flight. Abstract, Wavelets & CFD, Invited Talk, 2019
H.-N. Wehmann, F.-O. Lehmann. Fly flight and force deflection analysis for investigating the mechanical properties of insect wings. Net@Phys-Workshop der Fachgruppe Physiologie der DZG, conference lecture. 2019
T. Engels. Aerodynamics of Insect Flight: from Turbulence to Wing Elasticity, invited seminar talk at IRBI, CNRS and Tours University, Tours, France, 11.04.2019
T. Engels. Bio-Inspired Flight in Turbulence : from Modeling to Data Analysis, invited seminar talk at LEGI, CNRS, Grenoble, France, 12.03.2019
H. Truong, T. Engels, K. Schneider. Fluid-structure interaction using the volume penalization and mass-spring models with application in modeling insect flights. ICIAM 2019 Valencia, conference lecture, 2019
H.-N. Wehmann, L. Heepe, T. Engels, S.N. Gorb, F.-O. Lehmann: “Spatial imaging of wing flexing in flies by force deflection analysis”, 111th Annual Meeting of the German Zoological Society, 2018.
K. Schneider, R. Pereira, N. Nguyen van yen and M. Farge. Dissipation in adaptive wavelet
Galerkin discretizations. 71st Annual Conference, Division of Fluid Dynamics, American Physical Society, Atlanta (USA), 18.-20.11.2018. Bull. Amer. Phys. Soc., 63(13), 478 , 2018.
T. Engels, D. Kolomenskiy, K. Schneider, M. Farge, F. Lehmann, J. Sesterhenn. “Insects in tethered and free flight: the impact of turbulent inflow”, Talk at APS-DFD meeting, Atlanta, GA, 18.-20. Nov 2018, http://meetings.aps.org/Meeting/DFD18/Session/M19.5
D. Kolomenskiy, T. Engels, J. Sesterhenn et al. “The Dynamics of Bumblebee Wing Pitching
Rotation: Measurement and Modelling”, IUTAM Symposium on Critical flow dynamics involving moving/deformable structures with design applications, June 18-22, 2018, Santorini, Greece
K. Schneider. Massively parallel simulations of insect flight in turbulence. ICCFD10 ‘International Conference on Computational Fluid Dynamics’, July 9-13, 2018, Barcelona (Spain), invited talk
T. Engels, D. Kolomenskiy, K. Schneider, M. Farge, F. Lehmann, J. Sesterhenn. “Massively parallel free-flight simulations of a passive bumblebee in turbulence”, Talk at APS-DFD meeting, Denver, CO, USA, 19.-21. Nov 2017, http://meetings.aps.org/Meeting/DFD17/Session/L8.5
K. Schneider, T. Engels, M. Farge, “Bumblebees in turbulence: massively parallel numerical simulations”, Talk at KRS70 – Frontiers in turbulence meeting in Denver, CO, USA, 17.-18. Nov 2017. (URL)
T. Engels, M. Farge, K. Schneider. “On flapping flight in turbulence”, Poster presentation at KRS70 – Frontiers in turbulence meeting in Denver, CO, USA, 17.-18. Nov 2017. PDF-File.
T. Engels, D. Kolomenskiy, K. Schneider, M. Farge, F. Lehmann, J. Sesterhenn. “Vortex Dynamics of Flapping Insects in Fully Developed Turbulence”, IUTAM symposium on Dynamics and Topology of Vorticity and Vortices, June 13 – 16 2017, Carry-le-Rouet, Marseille, France, Abstract PDF
M. Farge, T. Engels, D. Kolomenskiy, K. Schneider, F. Lehmann, J. Sesterhenn. “Helical vortices generated by flapping wings of bumblebees”, Talk at APS-DFD meeting, Portland, OR, USA, 20-22. Nov 2016,
http://meetings.aps.org/link/BAPS.2016.DFD.G20.6
K. Schneider, T. Engels, D. Kolomenskiy, J. Sesterhenn. “Numerical simulations of chordwise flexible pitching foils: are expanding or contracting forms more efficient?”, Talk at APS-DFD meeting, Boston, MA, USA, 22-24 Nov 2015, http://meetings.aps.org/link/BAPS.2015.DFD.A26.3
T. Engels, D. Kolomenskiy, K. Schneider, J. Sesterhenn, F. Lehmann. “Bumblebees meet fully developed turbulence: high resolution numerical simulations”, Talk at APS-DFD meeting, Boston, MA, USA, 22-24 Nov 2015, http://meetings.aps.org/Meeting/DFD15/Session/H27.10
Seminar Talks
T. Engels, A 3D wavelet-based incompressible Navier-Stokes solver for fully adaptive computations in time-varying geometries, seminar talk at I2M, Marseille, France, 31.01.2020 URL
T. Engels. “Aerodynamics of Insect Flight: from Turbulence to Wing Elasticity”, seminar talk at IRBI, Université de Tours (France), 11.04.2019
T. Engels. “Bio-Inspired Flight in Turbulence : from Modeling to Data Analysis”, seminar talk at Laboratoire des Écoulements Géophysiques et Industriels (LEGI), Grenoble (France), 12.03.2019, URL
T. Engels. “Aerodynamics of Insect Flight in Turbulence”, seminar talk at the DFG/CNRS meeting, TU Berlin (Germany), 12.10.2018
D. Kolomenskiy. “Bumblebee in flight and in digit”, seminar talk at PPMH, ESPCI, Paris (France), 07.12.2018, URL
T. Engels. “The impact of turbulence on flying insects in tethered and free flight : high-resolution numerical experiments”, seminar talk at PPMH, ESPCI, Paris (France), 08.06.2018, URL
K. Schneider. “Massively parallel simulations of insect flight in turbulence”. Séminaire Laboratoire M2N – Modélisation mathématique et numérique, Conservatoire national des arts et métiers, Paris (France). 29.10.2018