Zobrazeno 1 - 10
of 144
pro vyhledávání: '"Chris R. Kleijn"'
Autor:
Amin Ebrahimi, Mohammad Sattari, Scholte J.L. Bremer, Martin Luckabauer, Gert-willem R.B.E. Römer, Ian M. Richardson, Chris R. Kleijn, Marcel J.M. Hermans
Publikováno v:
Materials & Design, Vol 214, Iss , Pp 110385- (2022)
The absorptivity of a material is a major uncertainty in numerical simulations of laser welding and additive manufacturing, and its value is often calibrated through trial-and-error exercises. This adversely affects the capability of numerical simula
Externí odkaz:
https://doaj.org/article/78f4c43b8d4c4c6eb3851308b90ae846
Autor:
Lee Aucott, Hongbiao Dong, Wajira Mirihanage, Robert Atwood, Anton Kidess, Shian Gao, Shuwen Wen, John Marsden, Shuo Feng, Mingming Tong, Thomas Connolley, Michael Drakopoulos, Chris R. Kleijn, Ian M. Richardson, David J. Browne, Ragnvald H. Mathiesen, Helen. V. Atkinson
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Understanding what happens to the liquid in melt pools during welding and metal-based additive manufacturing remains a challenge. Here, the authors directly image internal melt pool dynamics using synchrotron radiation to show surface tension affects
Externí odkaz:
https://doaj.org/article/f61b57d666f54171900e6c21e8e787ea
Publikováno v:
Materials, Vol 14, Iss 23, p 7444 (2021)
One of the challenges for development, qualification and optimisation of arc welding processes lies in characterising the complex melt-pool behaviour which exhibits highly non-linear responses to variations of process parameters. The present work pre
Externí odkaz:
https://doaj.org/article/59155bdbbb5248e29d2a560a5a454845
Publikováno v:
Energies, Vol 12, Iss 22, p 4360 (2019)
The high degree of uncertainty and conflicting literature data on the value of the permeability coefficient (also known as the mushy zone constant), which aims to dampen fluid velocities in the mushy zone and suppress them in solid regions, is a crit
Externí odkaz:
https://doaj.org/article/1ba36d1dbf3b46308d813dfe40b2d428
Autor:
Mfm Michel Speetjens, Chris R. Kleijn, Mark J. Tummers, P. S. Contreras, Iman Ataei-Dadavi, Hjh Herman Clercx
Publikováno v:
Physics of Fluids, 31(12)
Physics of Fluids, 31(12):123601, 1-16. American Institute of Physics
Physics of Fluids, 31(12):123601, 1-16. American Institute of Physics
The present study concerns Lagrangian transport and (chaotic) advection in three-dimensional (3D) flows in cavities under steady and laminar conditions. The main goal is to investigate topological equivalences between flow classes driven by different
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c281092bcc362fbf73f9585ea091271
https://doi.org/10.1063/1.5126497
https://doi.org/10.1063/1.5126497
Publikováno v:
Chemical Engineering Science. 206:180-186
Self-limiting gas-surface reactions lead to reaction fronts that penetrate nanoporous materials with a finite speed. We present a closed form theoretical model, validated against molecular simulations, that shows the influence of the fractal scaling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc26a15e5d7c0d2d60b708ea3f1d2a2a
https://doi.org/10.1016/j.ces.2019.05.027
https://doi.org/10.1016/j.ces.2019.05.027
Publikováno v:
Journal of Fluid Mechanics, 876
Thermal fluctuations have been shown to influence the thinning dynamics of planar thin liquid films, bringing predicted rupture times closer to experiments. Most liquid films in nature and industry are, however, non-planar. Thinning of such films not
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a881b80624cfd1a24950d396713c6531
https://doi.org/10.1017/jfm.2019.595
https://doi.org/10.1017/jfm.2019.595
Numerical analysis of natural convection with conjugate heat transfer in coarse-grained porous media
Publikováno v:
International Journal of Heat and Fluid Flow, 77
We report numerical simulations of fluid natural convection with conjugate heat transfer in a bottom-heated, top-cooled cubical cavity packed with relatively large (d/L=0.2) solid spheres in a Body Centred Tetragonal (BCT) configuration. We study lar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3cecb7df6d9d65a7b4e3a56205077dba
https://doi.org/10.1016/j.ijheatfluidflow.2019.03.008
https://doi.org/10.1016/j.ijheatfluidflow.2019.03.008
Publikováno v:
International Journal of Heat and Mass Transfer, 130
This paper reports on an experimental study of natural convection in an enclosure that is heated at the bottom and cooled at the top, filled with a packed bed of relatively large solid spheres. Nusselt numbers were measured for various sphere conduct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::337f257af4f0fc56406518a8128e4e33
https://doi.org/10.1016/j.ijheatmasstransfer.2018.10.118
https://doi.org/10.1016/j.ijheatmasstransfer.2018.10.118
Publikováno v:
Physical Review Fluids, 6(1)
The initial thickness and radius of the film that forms upon close contact of two foam bubbles are known to influence the thinning dynamics and lifetime of the film. Various scalings of lifetime tr, with initial radius Rfilm and thickness ho, have be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ead0d77d41480cc49124fe244c7713a7
http://resolver.tudelft.nl/uuid:ca6ce27b-565b-4e1b-878b-b71e2f1060fa
http://resolver.tudelft.nl/uuid:ca6ce27b-565b-4e1b-878b-b71e2f1060fa
