Far-Field Boundary Conditions for Stably Stratified Flows (Tomáš Bodnár, ISPRASOPEN-2019) — различия между версиями
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{{eng}} ;{{SpeakerInfo}}: {{Speaker|Tomáš Bodnár}} <blockquote> This numerical study presents the results of simulations of stably stratified wall-bounded flows. The effect of artificial far-field boundary conditions is studied in detail. The standard homogeneous Neumann condition for pressure is replaced by a non-homogeneous condition depending on local velocity and its gradient. The three-dimensional tests are performed for the case of flow over a low isolated hill. The simulations on computational domains with three different heights are discussed to evaluate the performance of the new far-field artificial boundary condition. The model is based on Boussinesq approximation of non-homogeneous Navier-Stokes equations, solved using artificial compressibility method, looking for a steady solution. </blockquote> {{VideoSection}} {{vimeoembed|240322450|800|450}} {{youtubelink|WMXi63U73W4}} {{letscomment}} {{SlidesSection}} [[File:Far-Field Boundary Conditions for Stably Stratified Flows (Tomáš Bodnár, ISPRASOPEN-2019).pdf|left|page=-|300px]] {{----}} [[File:{{#setmainimage:Far-Field Boundary Conditions for Stably Stratified Flows (Tomáš Bodnár, ISPRASOPEN-2019)!.jpg}}|center|640px]] {{LinksSection}} <!-- * [ Talks page on site] --> <!-- <blockquote>[©]</blockquote> --> {{vklink|1666}} <references/> <!-- topub --> {{stats|disqus_comments=0|refresh_time=2021-08-31T16:20:34.407887|vimeo_plays=0|youtube_comments=0|youtube_plays=72}} [[Категория:ISPRASOPEN-2019]] [[Категория:Mechanics]] |
Текущая версия на 12:19, 4 сентября 2021
- Speaker
- Tomáš Bodnár
This numerical study presents the results of simulations of stably stratified wall-bounded flows.
The effect of artificial far-field boundary conditions is studied in detail. The standard homogeneous Neumann condition for pressure is replaced by a non-homogeneous condition depending on local velocity and its gradient. The three-dimensional tests are performed for the case of flow over a low isolated hill. The simulations on computational domains with three different heights are discussed to evaluate the performance of the new far-field artificial boundary condition.
The model is based on Boussinesq approximation of non-homogeneous Navier-Stokes equations, solved using artificial compressibility method, looking for a steady solution.
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