Protocols for minimizing the leading edge bulge in stereolithography

Autor: Herman Clercx, Alexander Kozhevnikov, Gregor E. van Baars, Rudie Kunnen

Publikováno v: Progress in Additive Manufacturing, 7(2), 361-374. Springer

The leading edge bulge is a known defect in stereolithography with free-surface recoating. It is a resin excess that remains after deposition over a deep-to-shallow topographic transition, the leading edge of the cavity. In this paper, we explore an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b5db38fcb0ec9689bdf762395974f71
https://doi.org/10.1007/s40964-021-00234-x

Discontinuous transitions towards vortex condensates in buoyancy-driven rotating turbulence

Autor: Rudie Kunnen, Andrés Aguirre Guzmán, Herman J.H. Clercx, Xander De Wit

Publikováno v: Journal of Fluid Mechanics, 936:A43. Cambridge University Press

Using direct numerical simulations of rotating Rayleigh-B\'enard convection, we explore the transitions between turbulent states from a 3D flow state towards a quasi-2D condensate known as the large-scale vortex (LSV). We vary the Rayleigh number $Ra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efa6e55225765cebbb087d7fbfd11fcc
https://doi.org/10.1017/jfm.2022.90

Velocimetry in rapidly rotating convection: spatial correlations, flow structures and length scales

Autor: Andrés J. Aguirre Guzmán, Rudie Kunnen, Herman Clercx, Matteo Madonia

Publikováno v: EPL (Europhysics Letters)
EPL, 135(5):54002. Institute of Physics

Rotating Rayleigh--B\'enard convection is an oft-employed model system to evaluate the interplay of buoyant forcing and Coriolis forces due to rotation, an eminently relevant interaction of dynamical effects found in many geophysical and astrophysica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4928e99584ff6ee0b9a5363d54957a7f
http://arxiv.org/abs/2111.02130

Sharp transitions in rotating turbulent convection

Autor: Federico Toschi, Richard J. A. M. Stevens, Rudie Kunnen, Detlef Lohse, Herman Clercx, Kim M. J. Alards

Publikováno v: Physical Review Fluids
Physical review fluids, 4(7):074601. American Physical Society
Physical Review Fluids, 4(7):074601, 1-19. American Physical Society
Physical review fluids (Online) 4 (2019). doi:10.1103/PhysRevFluids.4.074601
info:cnr-pdr/source/autori:Alards K.M.J.; Kunnen R.P.J.; Stevens R.J.A.M.; Lohse D.; Toschi F.; Clercx H.J.H./titolo:Sharp transitions in rotating turbulent convection: Lagrangian acceleration statistics reveal a second critical Rossby number/doi:10.1103%2FPhysRevFluids.4.074601/rivista:Physical review fluids (Online)/anno:2019/pagina_da:/pagina_a:/intervallo_pagine:/volume:4

In RB convection for fluids with Prandtl number $Pr\gtrsim 1$, rotation beyond a critical (small) rotation rate is known to cause a sudden enhancement of heat transfer which can be explained by a change in the character of the BL dynamics near the to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3c3709390a1f42c80ebeafbc9e5054b
https://research.tue.nl/en/publications/709efdea-7c84-4697-ad1b-12ad5a26718c

Effect of microbubble-induced cavitation on the dispersion of sprays

Autor: Rudie Kunnen, NJ Nico Dam, D.D. van der Voort, G. J. F. van Heijst, Hjh Herman Clercx

Publikováno v: Physical Review Fluids, 2(3):033601, 1-13. American Physical Society

The presence of bubbles and voids inside nozzles has a large effect on the morphology and atomization of sprays. In this investigation the voids formed by microbubbles entering the nozzle are investigated using transparent glass nozzles, pressure tra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae491436c851115b6189074d1dc28032
https://doi.org/10.1103/PhysRevFluids.2.033601