Numerical simulations of the IPPE target geometry flows

Akshay Prakash; Sotiris Kakarantzas; Davide Bernardi; Gioacchino Micciche; Vincent Massaut; Bernard Knaepen

doi:10.1016/j.fusengdes.2013.02.106

Numerical simulations of the IPPE target geometry flows

Akshay Prakash, Sotiris Kakarantzas, Davide Bernardi, Gioacchino Micciche, Vincent Massaut, Bernard Knaepen

Research output › peer-review

2 Scopus citations

Abstract

A high speed water and liquid lithium (Li) flow is computed over the IPPE geometry to evaluate the performance of different turbulence models in 2D and 3D simulations. Results reported are the thickness of the liquid jet, irregularities in the surface, transient phenomena at the wall which can affect fluid surface and effect of the variation in bulk velocity on these quantities. All models show good near wall resolution of the boundary layer and expected profiles for the free surface flow. Predicted turbulent kinetic energy compare well with published data. Fluctuations of the flow surface at the control location (center of the curved section) and elsewhere are well within 1 mm for all models. However it was observed that the predictions are strongly dependent on the model used. Overall, the predictions of RANS models are close to each other whereas predictions of laminar simulations are close to those obtained with LES models.

Original language	English
Pages (from-to)	800-803
Number of pages	4
Journal	fusion engineering and design
Volume	88
Issue number	6-8
DOIs	https://doi.org/10.1016/j.fusengdes.2013.02.106
State	Published - 2013

ASJC Scopus subject areas

Civil and Structural Engineering
Nuclear Energy and Engineering
General Materials Science
Mechanical Engineering

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10.1016/j.fusengdes.2013.02.106

Cite this

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title = "Numerical simulations of the IPPE target geometry flows",

abstract = "A high speed water and liquid lithium (Li) flow is computed over the IPPE geometry to evaluate the performance of different turbulence models in 2D and 3D simulations. Results reported are the thickness of the liquid jet, irregularities in the surface, transient phenomena at the wall which can affect fluid surface and effect of the variation in bulk velocity on these quantities. All models show good near wall resolution of the boundary layer and expected profiles for the free surface flow. Predicted turbulent kinetic energy compare well with published data. Fluctuations of the flow surface at the control location (center of the curved section) and elsewhere are well within 1 mm for all models. However it was observed that the predictions are strongly dependent on the model used. Overall, the predictions of RANS models are close to each other whereas predictions of laminar simulations are close to those obtained with LES models.",

keywords = "Curved surface flows, Free-surface, IFMIF, IPPE, Li flow, Turbulence",

author = "Akshay Prakash and Sotiris Kakarantzas and Davide Bernardi and Gioacchino Micciche and Vincent Massaut and Bernard Knaepen",

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AU - Prakash, Akshay

AU - Kakarantzas, Sotiris

AU - Bernardi, Davide

AU - Micciche, Gioacchino

AU - Massaut, Vincent

AU - Knaepen, Bernard

PY - 2013

Y1 - 2013

N2 - A high speed water and liquid lithium (Li) flow is computed over the IPPE geometry to evaluate the performance of different turbulence models in 2D and 3D simulations. Results reported are the thickness of the liquid jet, irregularities in the surface, transient phenomena at the wall which can affect fluid surface and effect of the variation in bulk velocity on these quantities. All models show good near wall resolution of the boundary layer and expected profiles for the free surface flow. Predicted turbulent kinetic energy compare well with published data. Fluctuations of the flow surface at the control location (center of the curved section) and elsewhere are well within 1 mm for all models. However it was observed that the predictions are strongly dependent on the model used. Overall, the predictions of RANS models are close to each other whereas predictions of laminar simulations are close to those obtained with LES models.

AB - A high speed water and liquid lithium (Li) flow is computed over the IPPE geometry to evaluate the performance of different turbulence models in 2D and 3D simulations. Results reported are the thickness of the liquid jet, irregularities in the surface, transient phenomena at the wall which can affect fluid surface and effect of the variation in bulk velocity on these quantities. All models show good near wall resolution of the boundary layer and expected profiles for the free surface flow. Predicted turbulent kinetic energy compare well with published data. Fluctuations of the flow surface at the control location (center of the curved section) and elsewhere are well within 1 mm for all models. However it was observed that the predictions are strongly dependent on the model used. Overall, the predictions of RANS models are close to each other whereas predictions of laminar simulations are close to those obtained with LES models.

KW - Curved surface flows

KW - Free-surface

KW - IFMIF

KW - IPPE

KW - Li flow

KW - Turbulence

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