A Comparative Study of Turbulence Models for Conjugate Heat Transfer to Gas Flow in a Heated Mini-Channel

Chen, Yuming; Arbeiter, Frederik; Schlindwein, Georg

doi:10.1080/10407782.2012.638524

Cited by 8 publications

(3 citation statements)

References 32 publications

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“…Firstly, a brief summary of the available studies dealing with reversion is given in Table 1. It is straightforward to notice that most of the studies focus on imposed heat flux [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] whereas Dirichlet boundary conditions types are very scant [26,27]. Cylindrical pipes are the most frequently encountered geometry [7, 9-12, 14-16, 18, 20-23, 25] while channels are scarcer [6,8,13,17,26,27].…”

Section: Literature Reviewmentioning

confidence: 99%

“…In these two sets of papers, it appears that temperature is very often considered as a passive scalar and/or not related to the thermophysical properties, be it for DNS [26,27,[33][34][35][36][37][38][39][40][41][42][43] or for RANS studies [9-11, 13, 15]. In contrast, the influence of temperature on the property variations is still underdeveloped in DNS [44][45][46][47][48] and LES [29][30][31][32][49][50][51] and RANS papers [14,17,24,25,52]. Furthermore, the vast majority of these studies only consider fully developed features; for instance, the few available DNS databases are built within this framework.…”

Section: Literature Reviewmentioning

confidence: 99%

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Asymmetric reverse transition phenomenon in internal turbulent channel flows due to temperature gradients

Serra

Franquet

Boutrouche

et al. 2021

International Journal of Thermal Sciences

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Laminarization of a turbulent flow due to wall heating has been known for more than 50 years, to the point that it is sometimes used as means of reducing friction. However this phenomenon has been mainly studied for cylindrical pipes and with imposed heat flux but not for channel flows and with imposed temperature boundary conditions, especially with asymmetric ones (that is to say in presence of a transverse thermal gradient). Based on the recent success of some Reynolds-averaged Navier-Stokes (RANS) models to correctly describe the influence of a strong transverse temperature gradient on turbulent Poiseuille flows, when compared to similar direct numerical simulations (DNS) or large eddy simulations (LES) results, these approaches are used here to investigate reverse transition. Since the choice of turbulence model has a non-negligible influence on the results, however, it is necessary to use different models to get an indication of the uncertainty associated with them. The proposed methodology is based on the use of RANS closures that do not involve any wall functions due to the strong gradient in the wall layer that has to be modeled. Thus, two first-moment closures and a second-moment closure are considered: the k − ω − SST and the k − ε − v 2 /k, and the EB-RSM. The latter two rely on an elliptic blending. The turbulent heat flux is modeled with a simple gradient diffusion hypothesis (SGDH) and a generalized gradient diffusion hypothesis (GGDH) for the first-moment and second-moment closures respectively. In summary, more than 800 calculations are performed for the above three models in order to analyze the reverse transition, and to open room for debate on the possibility for such approaches to correctly reproduce the experimentally observed behavior.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Asymmetric reverse transition phenomenon in internal turbulent channel flows due to temperature gradients

Serra

Franquet

Boutrouche

et al. 2021

International Journal of Thermal Sciences

View full text Add to dashboard Cite

show abstract

“…Researchers have performed investigations on the influence of the turbulence model on the prediction accuracy of CHT simulations [10][11][12][13][14]. The two-equation turbulence models were found to predict an anomalously large growth in turbulent kinetic energy when the high strain rate influences the turbulent kinetic energy with moderate intensity [15].…”

Section: Introductionmentioning

confidence: 99%

Improvement of a Turbulence Model for Conjugate Heat Transfer Simulation

Wang

Zou

et al. 2012

Numerical Heat Transfer, Part A: Applications

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Numerical simulations on gaseous flow and heat transfer in multiple narrow channels of IFMIF High Flux Test Module

Chen

Arbeiter

2013

Fusion Engineering and Design

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A Comparative Study of Turbulence Models for Conjugate Heat Transfer to Gas Flow in a Heated Mini-Channel

Cited by 8 publications

References 32 publications

Asymmetric reverse transition phenomenon in internal turbulent channel flows due to temperature gradients

Asymmetric reverse transition phenomenon in internal turbulent channel flows due to temperature gradients

Improvement of a Turbulence Model for Conjugate Heat Transfer Simulation

Numerical simulations on gaseous flow and heat transfer in multiple narrow channels of IFMIF High Flux Test Module

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