### Abstract

Original language | English |
---|---|

Pages (from-to) | 1-10 |

Number of pages | 10 |

Journal | Review of Applied Physics |

Volume | 5 |

Issue number | 1 |

DOIs | |

Publication status | Published - 24 Feb 2017 |

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### Keywords

- thermal convection
- liquid metal flow
- Navier‐Stokes equations
- analytic and numerical solutions

### Cite this

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**On the general properties of steady gravitational thermal flows of liquid metals in variable cross-section containers.** / Lappa, Marcello; Ferialdi, Hermes.

Research output: Contribution to journal › Article

TY - JOUR

T1 - On the general properties of steady gravitational thermal flows of liquid metals in variable cross-section containers

AU - Lappa, Marcello

AU - Ferialdi, Hermes

PY - 2017/2/24

Y1 - 2017/2/24

N2 - Thermogravitational flows of liquid metals in open or closed ducts and containers play a relevant role in a variety of applications in mechanical, materials and nuclear engineering. Such flows are known to be very sensitive to the effective shape of the container used to host the fluid and its thermal boundary conditions. For the case of temperature gradients having the main component directed along the horizontal direction, related convective phenomena fall under the general heading of “Hadley flow”. Here we introduce a general framework for the determination of the properties of these flows in the case of domains having converging or diverging top and bottom walls. The framework is built via a hybrid approach in which typical techniques of CFD are used in synergy with analytical solutions of the energy equation. The proper use of initial and boundary conditions results in algorithm convergence acceleration. The role played by the top and bottom wall inclination with respect to the horizontal is assessed through parametric investigation.

AB - Thermogravitational flows of liquid metals in open or closed ducts and containers play a relevant role in a variety of applications in mechanical, materials and nuclear engineering. Such flows are known to be very sensitive to the effective shape of the container used to host the fluid and its thermal boundary conditions. For the case of temperature gradients having the main component directed along the horizontal direction, related convective phenomena fall under the general heading of “Hadley flow”. Here we introduce a general framework for the determination of the properties of these flows in the case of domains having converging or diverging top and bottom walls. The framework is built via a hybrid approach in which typical techniques of CFD are used in synergy with analytical solutions of the energy equation. The proper use of initial and boundary conditions results in algorithm convergence acceleration. The role played by the top and bottom wall inclination with respect to the horizontal is assessed through parametric investigation.

KW - thermal convection

KW - liquid metal flow

KW - Navier‐Stokes equations

KW - analytic and numerical solutions

UR - http://www.seipub.org/rap/

U2 - 10.14355/rap.2017.05.001

DO - 10.14355/rap.2017.05.001

M3 - Article

VL - 5

SP - 1

EP - 10

JO - Review of Applied Physics

JF - Review of Applied Physics

SN - 2327-1604

IS - 1

ER -