Zobrazeno 1 - 10
of 148
pro vyhledávání: '"Hemmati, Arman"'
This study introduces novel physics-based scaling laws to estimate the propulsive performance of synchronously pitching foils in various schooling configurations at Re=4000. These relations are derived from quasi-steady lift-based and added mass forc
Externí odkaz:
http://arxiv.org/abs/2307.13093
The correspondence of secondary spanwise structures and pressure gradient is numerically evaluated for a foil, performing heaving and pitching motion, at a range of phase offsets (90$^\circ$ $\le \phi \le$ 270$^\circ$) and reduced frequency (0.32 $\l
Externí odkaz:
http://arxiv.org/abs/2307.05823
Three-dimensional wake of an oscillating foil with combined heaving and pitching motion is numerically evaluated at a range of chord-based Strouhal number (0.32 \le Stc \le 0.56) and phase offset (90 deg \le \phi \le 70 deg) at Re = 8000. The changes
Externí odkaz:
http://arxiv.org/abs/2307.05788
Publikováno v:
Journal of Fluid Mechanics. 2024;979:A50
Several methods have been proposed to characterize the complex interactions in turbulent wakes, especially for flows with strong cyclic dynamics. This paper introduces the concept of Fourier-Averaged Navier-Stokes (FANS) equations as a framework to o
Externí odkaz:
http://arxiv.org/abs/2302.08025
The unsteady hydrodynamics of two in-phase pitching foils arranged in side-by-side (parallel) configurations is examined for a range of Strouhal number and separation distance. Three distinct vortex patterns are identified in the Strohual number-sepa
Externí odkaz:
http://arxiv.org/abs/2201.00034
This study explored the aerodynamics of a new multi-stage co-axial vertical-axis wind turbine based on bio-inspiration from natural swimming habit of fish. The turbine was formed from a conventional straight-bladed vertical-axis turbine (VAWT) with a
Externí odkaz:
http://arxiv.org/abs/2107.04198
This study was inspired from the swimming habits of red nose tetra fish that prefer side-by-side configurations and exhibit changes to their synchronization mid-swimming. Using numerical simulations, alterations to the unsteady wake dynamics imposed
Externí odkaz:
http://arxiv.org/abs/2012.05309
Autor:
Khalid, Muhammad Saif Ullah, Wang, Junshi, Akhtar, Imran, Hemmati, Arman, Dong, Haibo, Liu, Moubin
Publikováno v:
Phys. Rev. Fluids 6, 073101 (2021)
The wavelength of undulatory kinematics of fish is an important parameter to determine their hydrodynamic performance. This study focuses on numerical examination of this feature by reconstructing the real physiological model and kinematics of steadi
Externí odkaz:
http://arxiv.org/abs/2010.04748
Autor:
Goswami, Shubham, Hemmati, Arman
Publikováno v:
In International Journal of Heat and Fluid Flow December 2023 104
Autor:
Moradi, Kazem, Rastgar, Masoud, Karami, Pooria, Yousefi, Afrouz, Noamani, Sadaf, Hemmati, Arman, Sadrzadeh, Mohtada
Publikováno v:
In Chemical Engineering Journal Advances 15 November 2023 16