Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Hwang, Yongyun"'
Autor:
Lee, Myoungkyu, Hwang, Yongyun
The origin of wall shear-stress fluctuations in wall turbulence was studied through energy dissipation at the wall. While confirming the universality in wall dissipation at small inner scales, the dissipation at larger scales is a consequence of near
Externí odkaz:
http://arxiv.org/abs/2405.00591
Biofilament-motor protein complexes are ubiquitous in biology and drive the transport of cargo vital for many fundamental cellular processes. As they move, motor proteins exert compressive forces on the filaments to which they are attached, leading t
Externí odkaz:
http://arxiv.org/abs/2309.06294
Plane Couette flow at Re=1200 (based on the channel half-height and half the velocity difference between the top and bottom plates) is investigated with a spatial domain designed to retain only two spanwise integral length scales. In this system, the
Externí odkaz:
http://arxiv.org/abs/2306.16944
Autor:
Hwang, Yongyun
In this study, asymptotic scaling of near-wall streamwise turbulence intensity $\overline{u'u'}/u_\tau^2$ ($u_\tau$ is the friction velocity) is theoretically explored. The three scalings previously proposed are first reviewed with their derivation a
Externí odkaz:
http://arxiv.org/abs/2306.14674
A data-driven implementation of a quasi-linear approximation is presented, extending a minimal quasi-linear approximation (MQLA) (Hwang & Ekchardt, J. Fluid Mech., 2020, 894:A23) to incorporate non-zero streamwise Fourier modes. A data-based approach
Externí odkaz:
http://arxiv.org/abs/2305.15043
Continuing from Part 1 (Hern\'andez \emph{et al.}, \emph{arXiv:2108.12395}, 2021), a generalized quasilinear (GQL) approximation is studied in turbulent channel flow using a flow decomposition defined with spanwise Fourier modes: the flow is decompos
Externí odkaz:
http://arxiv.org/abs/2112.01972
A generalised quasilinear (GQL) approximation (Marston \emph{et al.}, \emph{Phys. Rev. Lett.}, vol. 116, 104502, 2016) is applied to turbulent channel flow at $Re_\tau \simeq 1700$ ($Re_\tau$ is the friction Reynolds number), with emphasis on the ene
Externí odkaz:
http://arxiv.org/abs/2108.12395
A dilute suspension of motile microorganisms subjected to a strong ambient flow, such as algae in the ocean, can be modelled as a population of non-interacting, orientable active Brownian particles (ABPs). Using the Smoluchowski equation (i.e. Fokker
Externí odkaz:
http://arxiv.org/abs/2103.03619
Autor:
Fung, Lloyd, Hwang, Yongyun
Kessler (Nature, vol. 313, 1985, pp. 218-220) first showed that plume-like structures spontaneously appear from both stationary and flowing suspensions of gyrotactic microswimmers in a vertical pipe. Recently, it has been shown that there exist multi
Externí odkaz:
http://arxiv.org/abs/2005.14609
In the experiment that first demonstrated gyrotactic behaviour of bottom-heavy swimming microalgae (e.g. Chlamydomonas), Kessler (Nature, vol. 313, 1985, pp. 218-220) showed that a beam-like structure, often referred to as a gyrotactic plume, would s
Externí odkaz:
http://arxiv.org/abs/2001.08072