Zobrazeno 1 - 10
of 204
pro vyhledávání: '"Alben, Silas"'
Autor:
Wang, Xiaojia, Alben, Silas
Oscillations of a heated solid surface in an oncoming fluid flow can increase heat transfer from the solid to the fluid. Previous studies have investigated the resulting heat transfer enhancement for the case of a circular cylinder undergoing transla
Externí odkaz:
http://arxiv.org/abs/2411.05929
We study the dynamics of sail membranes during a tacking maneuver, when the sail angle of attack is reversed in order to sail upwind. In successful tacking the sail flips to the mirror-image shape, while in unsuccessful tacking the sail remains stuck
Externí odkaz:
http://arxiv.org/abs/2410.04966
We compute unsteady perturbations that optimally increase the heat transfer (Nu) of optimal steady unidirectional channel flows, for a given average rate of power consumption Pe$^2$. The perturbations are expanded in a basis of modes, and the heat tr
Externí odkaz:
http://arxiv.org/abs/2409.15231
We study the large-amplitude flutter of rectangular membranes in 3-D inviscid flows. The membranes' deformations vary significantly in both the chordwise and spanwise directions. Many previous studies used 2D flow models and neglected spanwise variat
Externí odkaz:
http://arxiv.org/abs/2311.16443
Autor:
Alben, Silas
We compute steady planar incompressible flows and wall shapes that maximize the rate of heat transfer (Nu) between and hot and cold walls, for a given rate of viscous dissipation by the flow (Pe$^2$). In the case of no flow, we show theoretically tha
Externí odkaz:
http://arxiv.org/abs/2309.15953
Autor:
Alben, Silas
We study steady flows that are optimal for heat transfer in a two-dimensional periodic domain. The flows maximize heat transfer under the constraints of incompressibility and a given energy budget (i.e. mean viscous power dissipation). Using an uncon
Externí odkaz:
http://arxiv.org/abs/2303.16324
We develop a model and numerical method to study the large-amplitude flutter of rectangular membranes (of zero bending rigidity) that shed a trailing vortex-sheet wake in a three-dimensional (3D) inviscid fluid flow. We apply small initial perturbati
Externí odkaz:
http://arxiv.org/abs/2206.07833
Autor:
Earnst, Adam, Alben, Silas
Many previous studies of sliding locomotion have assumed that body inertia is negligible. Here we optimize the kinematics of a three-link body for efficient locomotion and include among the kinematic parameters the temporal period of locomotion, or e
Externí odkaz:
http://arxiv.org/abs/2205.14509
Autor:
Alben, Silas
We optimize three-dimensional snake kinematics for locomotor efficiency. We assume a general space-curve representation of the snake backbone with small-to-moderate lifting off the ground and negligible body inertia. The cost of locomotion includes w
Externí odkaz:
http://arxiv.org/abs/2205.04447
Publikováno v:
In Journal of Fluids and Structures November 2024 130
