Large-eddy simulation of underexpanded natural gas jets

V. Vuorinen; C. Duwig; O. Kaario; M. Larmi; B. J. Boersma

Large-eddy simulation of underexpanded natural gas jets

V. Vuorinen, C. Duwig, O. Kaario, M. Larmi, B. J. Boersma

Energia- ja konetekniikan laitos

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussa › Konferenssiesitys › Scientific › vertaisarvioitu

Abstrakti

Large-Eddy Simulations (LES) based on scale-selective implicit filtering are carried out in order to study the effect of nozzle pressure ratios on the characteristics of highly underexpanded jets. Pressure ratios ranging from 3 to 9 with Reynolds numbers of the order 70000 to 150000 are considered. The studied configuration agrees well with the classical picture of the structure of highly underexpanded jets. The coherent structures of the jet are investigated using Proper Orthogonal Decomposition (POD). The statistics of scalar dissipation rate are investigated in detail. Using the first POD modes, we reconstruct the scalar fields and provide the link between the dominant modes and the dissipative structures.

Alkuperäiskieli	Englanti
Tila	Julkaistu - 1 tammik. 2020
OKM-julkaisutyyppi	Ei sovellu
Tapahtuma	European Turbulence Conference - Lyon, Ranska Kesto: 1 syysk. 2013 → 4 syysk. 2013 Konferenssinumero: 14

Conference

Conference	European Turbulence Conference
Lyhennettä	ETC
Maa/Alue	Ranska
Kaupunki	Lyon
Ajanjakso	01/09/2013 → 04/09/2013

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title = "Large-eddy simulation of underexpanded natural gas jets",

abstract = "Large-Eddy Simulations (LES) based on scale-selective implicit filtering are carried out in order to study the effect of nozzle pressure ratios on the characteristics of highly underexpanded jets. Pressure ratios ranging from 3 to 9 with Reynolds numbers of the order 70000 to 150000 are considered. The studied configuration agrees well with the classical picture of the structure of highly underexpanded jets. The coherent structures of the jet are investigated using Proper Orthogonal Decomposition (POD). The statistics of scalar dissipation rate are investigated in detail. Using the first POD modes, we reconstruct the scalar fields and provide the link between the dominant modes and the dissipative structures.",

author = "V. Vuorinen and C. Duwig and O. Kaario and M. Larmi and Boersma, {B. J.}",

year = "2020",

month = jan,

day = "1",

language = "English",

note = "European Turbulence Conference, ETC ; Conference date: 01-09-2013 Through 04-09-2013",

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TY - CONF

T1 - Large-eddy simulation of underexpanded natural gas jets

AU - Vuorinen, V.

AU - Duwig, C.

AU - Kaario, O.

AU - Larmi, M.

AU - Boersma, B. J.

N1 - Conference code: 14

PY - 2020/1/1

Y1 - 2020/1/1

N2 - Large-Eddy Simulations (LES) based on scale-selective implicit filtering are carried out in order to study the effect of nozzle pressure ratios on the characteristics of highly underexpanded jets. Pressure ratios ranging from 3 to 9 with Reynolds numbers of the order 70000 to 150000 are considered. The studied configuration agrees well with the classical picture of the structure of highly underexpanded jets. The coherent structures of the jet are investigated using Proper Orthogonal Decomposition (POD). The statistics of scalar dissipation rate are investigated in detail. Using the first POD modes, we reconstruct the scalar fields and provide the link between the dominant modes and the dissipative structures.

AB - Large-Eddy Simulations (LES) based on scale-selective implicit filtering are carried out in order to study the effect of nozzle pressure ratios on the characteristics of highly underexpanded jets. Pressure ratios ranging from 3 to 9 with Reynolds numbers of the order 70000 to 150000 are considered. The studied configuration agrees well with the classical picture of the structure of highly underexpanded jets. The coherent structures of the jet are investigated using Proper Orthogonal Decomposition (POD). The statistics of scalar dissipation rate are investigated in detail. Using the first POD modes, we reconstruct the scalar fields and provide the link between the dominant modes and the dissipative structures.

UR - http://www.scopus.com/inward/record.url?scp=85081083761&partnerID=8YFLogxK

M3 - Paper

T2 - European Turbulence Conference

Y2 - 1 September 2013 through 4 September 2013

ER -

Large-eddy simulation of underexpanded natural gas jets

Abstrakti

Conference

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