Sensitivity analysis of source region size on results of Stochastic Noise Generation and Radiation model

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU112141" target="_blank" >RIV/00216305:26210/14:PU112141 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Sensitivity analysis of source region size on results of Stochastic Noise Generation and Radiation model

Popis výsledku v původním jazyce

The paper deals with the Stochastic Noise Generation and Radiation (SNGR) model based on synthesizing of turbulent velocity components from results of a Reynolds Averaged Navier-Stokes (RANS) simulation. The turbulent velocity components are then used for computation of aero-acoustic sources representing the right-hand side of linerized Euler equations (LEE) describing the sound propagation. Primarily, the paper is aimed on testing the sensitivity of SNGR model solution on a source region size. Specifically, an acoustic intensity was chosen as a comparative variable computed by solving LEE via meshfree Finite Point Method (FPM). The size of source region has a direct impact on time and memory requirements during the stochastic reconstruction. As a testcase, we chose a 2D free plane jet with height 2b0 = 30mm and M = 0.1. For obtaining the averaged flow results, the RANS simulation with standard k-e turbulence model was performed. Based on this averaged results, the turbulent velocity

Název v anglickém jazyce

Sensitivity analysis of source region size on results of Stochastic Noise Generation and Radiation model

Popis výsledku anglicky

The paper deals with the Stochastic Noise Generation and Radiation (SNGR) model based on synthesizing of turbulent velocity components from results of a Reynolds Averaged Navier-Stokes (RANS) simulation. The turbulent velocity components are then used for computation of aero-acoustic sources representing the right-hand side of linerized Euler equations (LEE) describing the sound propagation. Primarily, the paper is aimed on testing the sensitivity of SNGR model solution on a source region size. Specifically, an acoustic intensity was chosen as a comparative variable computed by solving LEE via meshfree Finite Point Method (FPM). The size of source region has a direct impact on time and memory requirements during the stochastic reconstruction. As a testcase, we chose a 2D free plane jet with height 2b0 = 30mm and M = 0.1. For obtaining the averaged flow results, the RANS simulation with standard k-e turbulence model was performed. Based on this averaged results, the turbulent velocity

Druh

D - Stať ve sborníku

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-27505S" target="_blank" >GA13-27505S: Bezsíťová metoda s Large Eddy Simulation pro dynamiku tekutin a výpočtová aeroakustika</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of 43rd International Congress on Noise Control Engineering

ISBN

978-0-909882-04-4

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

1-7

Název nakladatele

Neuveden

Místo vydání

Neuveden

Místo konání akce

Melbourne

Datum konání akce

16. 11. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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