History of simulation of transient temperature fields of solidifying metals with phase change

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU132887" target="_blank" >RIV/00216305:26210/19:PU132887 - isvavai.cz</a>

Výsledek na webu

<a href="https://aip.scitation.org/doi/abs/10.1063/1.5114726" target="_blank" >https://aip.scitation.org/doi/abs/10.1063/1.5114726</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5114726" target="_blank" >10.1063/1.5114726</a>

Jazyk výsledku

angličtina

Název v původním jazyce

History of simulation of transient temperature fields of solidifying metals with phase change

Popis výsledku v původním jazyce

Solidification and cooling of the gravitationally cast metals (technology A) or continuously cast (concast) metals, foremost steels (technology B) rank among the major technological processes. It is a rather complex problem of transient heat and mass transfer. The process in a system A casting (riser)-mould (chills)-ambient can be described by the Fourier’s equation, in a system B concasting-crystallizer or concasting-ambient (in a radial concasting machine) is described by the Fourier-Kirchoff’s equation. Analytical methods can solve only one-dimensional non-transient temperature field of the gravitationally cast casting. Analog methods allow to solve only 2D transient temperature field (in limited range 3D). The construction of the 12 types of the ingot-moulds of the steelworks and the crystallization of pure aluminium was successfully optimized via a 2D Liebmanńs analog. The solidification and cooling of the steel roller (the diameter is 1180 and height 2100 mm) of the 500×1000×500 mm ductile cast-iron block was simulated by 3D numerical model (ANSYS). Both solutions in several construction proposal brought the optimization of production. The numerical model of a continuously cast casting was developed in two variants, off-line and on-line version. Both are based on the numerical method of finite differences with explicit formula for the unknown temperature of the mesh node in the next time step. On-line version of the model works non-stop in real time, ensures continuous correction of the real process of the caster in question. Both models are original and both are applicable for any caster.

Název v anglickém jazyce

History of simulation of transient temperature fields of solidifying metals with phase change

Popis výsledku anglicky

Solidification and cooling of the gravitationally cast metals (technology A) or continuously cast (concast) metals, foremost steels (technology B) rank among the major technological processes. It is a rather complex problem of transient heat and mass transfer. The process in a system A casting (riser)-mould (chills)-ambient can be described by the Fourier’s equation, in a system B concasting-crystallizer or concasting-ambient (in a radial concasting machine) is described by the Fourier-Kirchoff’s equation. Analytical methods can solve only one-dimensional non-transient temperature field of the gravitationally cast casting. Analog methods allow to solve only 2D transient temperature field (in limited range 3D). The construction of the 12 types of the ingot-moulds of the steelworks and the crystallization of pure aluminium was successfully optimized via a 2D Liebmanńs analog. The solidification and cooling of the steel roller (the diameter is 1180 and height 2100 mm) of the 500×1000×500 mm ductile cast-iron block was simulated by 3D numerical model (ANSYS). Both solutions in several construction proposal brought the optimization of production. The numerical model of a continuously cast casting was developed in two variants, off-line and on-line version. Both are based on the numerical method of finite differences with explicit formula for the unknown temperature of the mesh node in the next time step. On-line version of the model works non-stop in real time, ensures continuous correction of the real process of the caster in question. Both models are original and both are applicable for any caster.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/GA19-20802S" target="_blank" >GA19-20802S: Spojený tepelně-mechanický model tuhnutí oceli pro predikci vzniku trhlin v reálném čase</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

AIP Conference Proceedings

ISBN

978-0-7354-1858-5

ISSN

—

e-ISSN

—

Počet stran výsledku

4

Strana od-do

1-4

Název nakladatele

AIP Conference

Místo vydání

neuveden

Místo konání akce

Demanovská Dolina, Liptovský Mikuláš

Datum konání akce

19. 6. 2019

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

000558592600001