Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Lācis, Uǧis"'
Autor:
Lacis, Ugis
Tails, fins, scales, and surface coatings are used by organisms for various tasks, including locomotion. Since millions of years of evolution have passed, we expect that the design of surface structures is optimal for the tasks of the organism. These
Externí odkaz:
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-195679
Autor:
Lacis, Ugis
There is a wide variety of tails, fins, scales, riblets and surface coatings, which are used by motile animals in nature. Since organisms currently living on earth have gone through millions of years of evolution, one can expect that their design is
Externí odkaz:
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-158319
Autor:
Yada, Susumu, Lacis, Ugis, van der Wijngaart, Wouter, Lundell, Fredrik, Amberg, Gustav, Bagheri, Shervin
Textured hydrophobic surfaces that repel liquid droplets unidirectionally are found in nature such as butterfly wings and ryegrass leaves and are also essential in technological processes such as self-cleaning and anti-icing. However, droplet impact
Externí odkaz:
http://arxiv.org/abs/2203.04627
Autor:
Lācis, Uǧis, Pellegrino, Michele, Sundin, Johan, Amberg, Gustav, Zaleski, Stephané, Hess, Berk, Bagheri, Shervin
The motion of the three-phase contact line between two immiscible fluids and a solid surface arises in a variety of wetting phenomena and technological applications. One challenge in continuum theory is the effective representation of molecular pheno
Externí odkaz:
http://arxiv.org/abs/2112.09682
The Brinkman equation has found great popularity in modelling the interfacial flow between free fluid and a porous medium. However, it is still unclear how to determine an appropriate effective Brinkman viscosity without resolving the flow at the por
Externí odkaz:
http://arxiv.org/abs/2106.01879
Autor:
Khorasani, Seyed Morteza Habibi, Lācis, Uǧis, Pasche, Simon, Rosti, Marco Edoardo, Bagheri, Shervin
Publikováno v:
Journal of Fluid Mechanics , Volume 942 , 10 July 2022 , A45
A set of boundary conditions called the Transpiration-Resistance Model (TRM) are investigated in altering near-wall turbulence. The TRM has been previously proposed by \citet{Lacis2020} as a means of representing the net effect of surface micro-textu
Externí odkaz:
http://arxiv.org/abs/2105.09391
Autor:
Lācis, Uǧis, Johansson, Petter, Fullana, Tomas, Hess, Berk, Amberg, Gustav, Bagheri, Shervin, Zaleski, Stephané
The movement of the triple contact line plays a crucial role in many applications such as ink-jet printing, liquid coating and drainage (imbibition) in porous media. To design accurate computational tools for these applications, predictive models of
Externí odkaz:
http://arxiv.org/abs/2003.12246
We derive a homogenized macroscopic model for fluid flows over ordered homogeneous porous surfaces. The unconfined free-flow is described by the Navier-Stokes equation, and the Darcy equation governs the seepage flow within the porous domain. Boundar
Externí odkaz:
http://arxiv.org/abs/1909.07125
The surface texture of materials plays a critical role in wettability, turbulence and transport phenomena. In order to design surfaces for these applications, it is desirable to characterise non-smooth and porous materials by their ability to exchang
Externí odkaz:
http://arxiv.org/abs/1812.09401