Zobrazeno 1 - 10
of 314
pro vyhledávání: '"Lele, Sanjiva K."'
Screech resonance is studied with experimentally validated large-eddy simulation data for a 4:1 rectangular under-expanded jet at three nozzle pressure ratios. The analysis uses spectral proper orthogonal decomposition (SPOD) and spatial cross correl
Externí odkaz:
http://arxiv.org/abs/2304.00665
Publikováno v:
Center for Turbulence Research, Proceedings of the Summer Program, 2022
Airfoil noise is predicted and analyzed using wall-resolved large-eddy simulations and wavelet transforms for a NACA 0012 airfoil at a Mach number of 0.06 and a Reynolds number of 400,000 using a stair-strip forced transition and a natural transition
Externí odkaz:
http://arxiv.org/abs/2302.05809
Publikováno v:
J. Fluid Mech. 987 (2024) A5
Twin-jet configuration allows two different scenarios to close the screech feedback. For each jet, there is one loop involving disturbances which originate in that jet and arrive at its own receptivity point in-phase (self-excitation). The other loop
Externí odkaz:
http://arxiv.org/abs/2210.11567
Publikováno v:
In Journal of Computational Physics 1 October 2024 514
Autor:
Song, Hang, Ghate, Aditya S., Matsuno, Kristen V., West, Jacob R., Subramaniam, Akshay, Lele, Sanjiva K.
Publikováno v:
In Journal of Computational Physics 15 December 2024 519
Nonlinear Richtmyer--Meshkov instability and mixing transition induced by a Mach 1.45 shock and subsequent re-shock at an interface between two ideal gases (sulfur hexafluoride and air) with high Atwood number are studied with second-moment analysis
Externí odkaz:
http://arxiv.org/abs/2111.09538
This work describes three diffuse-interface methods for the simulation of immiscible, compressible multiphase fluid flows and elastic-plastic deformation in solids. The first method is the localized-artificial-diffusivity approach of Cook (2007), Sub
Externí odkaz:
http://arxiv.org/abs/2109.09729
Autor:
Jeun, Jinah, Karnam, Aatresh, Wu, Gao Jun, Lele, Sanjiva K., Baier, Florian, Gutmark, Ephraim J.
High-fidelity large-eddy simulations (LES) are performed to investigate aeroacoustic characteristics of jets issuing from twin rectangular nozzles with an aspect ratio of 2:1 at two over-expanded conditions and the design condition. For all three jet
Externí odkaz:
http://arxiv.org/abs/2105.04820
With the continuing progress in large eddy simulations (LES), and ever increasing computational resources, it is currently possible to numerically solve the time-dependent and anisotropic large scales of turbulence in a large variety of flows. For so
Externí odkaz:
http://arxiv.org/abs/2012.15021
Autor:
Song, Hang, Matsuno, Kristen V., West, Jacob R., Subramaniam, Akshay, Ghate, Aditya S., Lele, Sanjiva K.
A scalable algorithm for solving compact banded linear systems on distributed memory architectures is presented. The proposed method factorizes the original system into two levels of memory hierarchies, and solves it using parallel cyclic reduction o
Externí odkaz:
http://arxiv.org/abs/2101.02286