Detail publikace

Inverse calculation of local heat transfer coefficient on generic surfaces in OpenFOAM

BOHÁČEK, J. HNÍZDIL, M. HVOŽĎA, J. FERRO, L. KARIMI-SIBAKI, E. VAKHRUSHEV, A.

Anglický název

Inverse calculation of local heat transfer coefficient on generic surfaces in OpenFOAM

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

en

Originální abstrakt

The inverse heat conduction problem (IHCP) is a classic example from the large family of inverse problems, in which a thermal boundary condition is reconstructed on a surface of a body. When the normal fluxes dominate the heat transfer and the tangential fluxes are small, the problem can be simplified into one dimensional. Often, the opposite is true and a multidimensional problem needs to be solved. This paper presents a universal IHCP solver implemented in the open-source code OpenFOAM, whose main advantages are polyhedral meshes, variety of linear solvers, parallel calculations, being an open-source. The solver is robust, efficient and accurate. The quality of the solver is demonstrated on three examples: (i) jet cooling in the pressure die casting, spray cooling of (ii) a rail and (iii) a tube. Valuable data from experiments were used as an input in all three examples. Additionally, this paper introduces, for the first time, a novel semi-analytical formula for determining the optimal number of future timesteps required to solve the sequential IHCP.

Anglický abstrakt

The inverse heat conduction problem (IHCP) is a classic example from the large family of inverse problems, in which a thermal boundary condition is reconstructed on a surface of a body. When the normal fluxes dominate the heat transfer and the tangential fluxes are small, the problem can be simplified into one dimensional. Often, the opposite is true and a multidimensional problem needs to be solved. This paper presents a universal IHCP solver implemented in the open-source code OpenFOAM, whose main advantages are polyhedral meshes, variety of linear solvers, parallel calculations, being an open-source. The solver is robust, efficient and accurate. The quality of the solver is demonstrated on three examples: (i) jet cooling in the pressure die casting, spray cooling of (ii) a rail and (iii) a tube. Valuable data from experiments were used as an input in all three examples. Additionally, this paper introduces, for the first time, a novel semi-analytical formula for determining the optimal number of future timesteps required to solve the sequential IHCP.

Klíčová slova anglicky

Inverse heat conduction problem; die casting; Jet cooler; Spray cooling; Rail; Tube; Future timesteps

Vydáno

16.08.2025

Nakladatel

Elsevier

ISSN

1778-4166

Ročník

219

Číslo

110208

Strany od–do

1–13

Počet stran

13

BIBTEX


@article{BUT198536,
  author="Jan {Boháček} and Petr {Dyntera} and Milan {Hnízdil} and Jiří {Hvožďa} and Lorenzo {Ferro} and Ebrahim {Karimi-Sibaki} and Alexander {Vakhrushev},
  title="Inverse calculation of local heat transfer coefficient on generic surfaces in OpenFOAM",
  year="2025",
  volume="219",
  number="110208",
  month="August",
  pages="1--13",
  publisher="Elsevier",
  issn="1778-4166"
}