Computational study of conjugate heat transfer in T-junctions

Kuhn, Simon; Braillard, Olivier; Ničeno, Bojan; Prasser, Horst-Michael

doi:10.1016/j.nucengdes.2010.02.022

Cited by 53 publications

(10 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While being neglected here, subgrid-scale TRI effects are strictly not negligible and modeling studies have recently emerged [13,14]. Finally, accurate unsteady simulations such as LES to predict unsteady wall heat loads is very promising to determine thermal fatigue in combustors as recently developed in the nuclear engineering community [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

High-Fidelity Multiphysics Simulation of a Confined Premixed Swirling Flame Combining Large-Eddy Simulation, Wall Heat Conduction and Radiative Energy Transfer

Koren

Vicquelin

Gicquel

2017

Volume 5C: Heat Transfer

View full text Add to dashboard Cite

A multi-physics simulation combining large-eddy simulation, conjugate heat transfer and radiative heat transfer is used to predict the wall temperature field of a confined premixed swirling flame operating under atmospheric pressure. The combustion model accounts for the effect of enthalpy defect on the flame structure whose stabilization is here sensitive to the wall heat losses. The conjugate heat transfer is accounted for by solving the heat conduction within the combustor walls and with the Hybrid-Cell Neumann-Dirichlet coupling method, enabling to dynamically adapt the coupling period. The exact radiative heat transfer equation is solved with an advanced Monte Carlo method with a local control of the statistical error. The coupled simulation is carried out with or without accounting for radiation. Excellent results for the wall temperature are achieved by the fully coupled simulation which are then further analyzed in terms of radiative effects, global energy budget and fluctuations of wall heat flux and temperature.

show abstract

Section: Introductionmentioning

confidence: 99%

High-Fidelity Multiphysics Simulation of a Confined Premixed Swirling Flame Combining Large-Eddy Simulation, Wall Heat Conduction and Radiative Energy Transfer

Koren

Vicquelin

Gicquel

2017

Volume 5C: Heat Transfer

View full text Add to dashboard Cite

show abstract

“…By means of novel sensors in experimental facilities, the fluid and structure temperatures are captured simultaneously (Fontes et al, 2009;Kimura et al, 2009) and transfer functions are derived in the frequency domain. Computer simulation tools are also available which allow obtaining structural temperature fields by computing the fluid thermo-hydraulics, the fluid-wall heat convection and wall heat conduction simultaneously (Kloeren and Laurien, 2011;Kuhn et al, 2010). These tools employ LES with conjugate heat transfer (CHT) and give very promising results.…”

Section: Introductionmentioning

confidence: 99%

Stress assessment in piping under synthetic thermal loads emulating turbulent fluid mixing

Garrido

Shawish

Cizelj

2015

Nuclear Engineering and Design

View full text Add to dashboard Cite

“…The comparison with experimental results highlights the good behavior of large eddy simulations, in terms of averaged fields, amplitude and frequency of fluctuations. Kuhn et al (2010) focused on the numerical prediction of temperature fluctuations induced in solid materials through turbulent mixing processes. As test case they used the mixing of two streams of different temperature in a T-junction.…”

Section: Introductionmentioning

confidence: 99%