Výsledky vyhledávání - "Peter Diamessis"

Formation of Recirculating Cores in Convectively Breaking Internal Solitary Waves of Depression Shoaling over Gentle Slopes in the South China Sea

Autor: Greg Thomsen, Kevin G. Lamb, Gustavo Rivera-Rosario, Peter Diamessis, Ren-Chieh Lien

Publikováno v: Journal of Physical Oceanography. 50:1137-1157

The formation of a recirculating subsurface core in an internal solitary wave (ISW) of depression, shoaling over realistic bathymetry, is explored through fully nonlinear and nonhydrostatic two-dimensional simulations. The computational approach is b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fd0d00649c2e3dc0019c805068d40d82
https://doi.org/10.1175/jpo-d-19-0036.1

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The structure of self-sustained instability, transition and turbulence in the separating boundary layer under an internal solitary wave of depression

Autor: Peter Diamessis, Gustaaf Jacobs, Takahiro Sakai

The development of the separated bottom boundary layer (BBL) in the footprint of a large-amplitude ISW of depression is examined using high-accuracy/resolution implicit Large Eddy Simulation. The talk will focus on a single relatively idealized case

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bd5993dfc3869548ceae1912f40a0a7d
https://doi.org/10.5194/egusphere-egu21-16458

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Self-sustained instability, transition, and turbulence induced by a long separation bubble in the footprint of an internal solitary wave. I. Flow topology

Autor: Takahiro Sakai, Gustaaf Jacobs, Peter Diamessis

Publikováno v: Physical Review Fluids. 5

Using a high-accuracy-and-resolution implicit Large Eddy Simulation we study the development of the bottom boundary layer (BBL) driven by the long separation bubble which forms under an internal solitary wave (ISW) of depression propagating against a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::53609081552aacb47b1fb02b9dca5caa
https://doi.org/10.1103/physrevfluids.5.103801

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Internal gravity wave radiation from a stratified turbulent wake

Autor: Qi Zhou, Peter Diamessis, Kristopher Rowe

Publikováno v: Journal of Fluid Mechanics. 888

The near-field energetics and directional properties of internal gravity waves (IGWs) radiated from the turbulent wake of a sphere towed through a linearly stratified fluid are investigated using a series numerical experiments. Simulations have been

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e56e34a06d55ea76df2efe80eb4e942a
https://doi.org/10.1017/jfm.2020.40

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On the formulation and implementation of the stress-free boundary condition over deformed bathymetry using a spectral-element-method-based incompressible Navier–Stokes equations solver

Autor: Theodoros Diamantopoulos, Peter Diamessis, Marek Stastna

Publikováno v: Ocean Modelling. 165:101834

Various strategies are proposed for enforcing stress-free boundary conditions on deformed domains using a weak-form-based discretization in a Cartesian frame of reference. Due to the irregularity of the computational domain and the particular type of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d1ee8e6b59ebf1a977151df424f8c57b
https://doi.org/10.1016/j.ocemod.2021.101834

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Bed failure induced by internal solitary waves

Autor: James T. Jenkins, Peter Diamessis, Gustavo Rivera-Rosario

Publikováno v: Journal of Geophysical Research: Oceans. 122:5468-5485

The pressure field inside a porous bed induced by the passage of an Internal Solitary Wave (ISW) of depression is examined using high-accuracy numerical simulations. Assuming a two-layer, continuously stratified water column, the velocity and density

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4ec2c66190672fb821e38360500676af
https://doi.org/10.1002/2017jc012935

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A post-processing technique for stabilizing the discontinuous pressure projection operator in marginally-resolved incompressible inviscid flow

Autor: Sumedh M. Joshi, D.T. Steinmoeller, Peter Diamessis, Greg Thomsen, Marek Stastna

Publikováno v: Computers & Fluids. 139:120-129

A method for post-processing the velocity after a pressure projection is developed that helps to maintain stability in an under-resolved, inviscid, discontinuous element-based simulation for use in environmental fluid mechanics process studies. The p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::61d1eefdaaf150b5c5cae071bcdf710c
https://doi.org/10.1016/j.compfluid.2016.04.021

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