A rapid GPU-based heat transfer and solidification model for dynamic computer simulations of continuous steel casting

Klimeš, Lubomír; Stetina, Josef

doi:10.1016/j.jmatprotec.2015.06.016

Cited by 34 publications

(28 citation statements)

References 33 publications

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“…There are several ways to tackle these kinds of problems. For instance, one can use parallel computing [9], someone else may use accelerated architectures such as GPUs [10], while another person can use the unique organization of computations [11]. We have used parallel processing to assure sufficient time duration for simulations.…”

Section: Methodsmentioning

confidence: 99%

Modeling of heat flow using commercial and authorial software on the example of a permanent magnet motor

et al. 2019

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The aim of the work is the modeling of the heat flow in an electric motor with permanent magnets with a height of 56mm. Numerical calculations were carried out for a simplified 3D model prepared in the Autodesk Inventor solid modeling program. The bodies were prepared from the existing model and constructional documentation of the actual engine. In the next step, the simplified solid model was imported into a commercial Autodesk Simulation Multiphysics computing package and into authorial software in which it was supplied with appropriate material properties and discretized. In the next stage, the model was calibrated and verified by a preheating attempt of the actual object. The motor winding was supplied with direct current and was a heat source with a power of 40 W. Temperatures were recorded at selected points in the steady state. Then, on a discredited numerical model, computer simulations corresponding to the actual heating test were carried out. When comparing the temperature values obtained at the points corresponding to the measurement points, the model was calibrated, which corrected the thermal resistance parameters assumed in the calculation model. Finally, the model (after the implemented changes) was verified with results obtained with commercial and authorial software.

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Section: Methodsmentioning

confidence: 99%

Modeling of heat flow using commercial and authorial software on the example of a permanent magnet motor

et al. 2019

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“…There are several ways to tackle these kinds of problems. For instance, one can use parallel computing [9], someone else may use accelerated architectures such as GPUs (Graphics Processing Units) [10], while another person can use the special organization of computations [11]. We have used parallel processing to assure effective time duration for simulations.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Stress analysis in solid-liquid parts of solidifying castings

2019

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In the paper, we present results of stress analysis in domains which are a mixture of solid and liquid phases. Such mixtures occur in solidifying castings and are a result of forming a structure with solid skeleton and filling of a liquid phase. In this structure, stress occurs due to the appearance of temperature gradients, different values of material properties for the solid and liquid phase, and the appearance of friction forces between the solidified part of the casting and the mold on a macroscopic scale. This can lead to casting defects, such as hot cracking. The results are obtained with the use of a authors computer program based on the Finite Element Method. The stress analysis takes into account the elastic-plastic state of considered computational area. The presented results are focused on the microscopic scale, for which a finite element mesh is created which imitates the growing grains of the metal alloy in the casting, on the basis of macroscopic parameters.

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“…A necessidade de elevados patamares de competitividade na indústria do aço tem levado à utilização cada vez mais frequente, por parte daqueles que utilizam lingotamento contínuo, de ferramentas de modelagem matemática da solidificação. O emprego dessas ferramentas permite a otimização do processo de lingotamento sem a necessidade de extensivos e custosos experimentos de campo, uma vez que é possível integrar métodos de otimização ao modelo de solidificação, robustecendo-o [2][3][4][5][6]. No entanto, faz-se importante uma avaliação prévia do grau de ajuste do modelo à máquina de lingotamento contínuo estudada.…”

Section: Introductionunclassified

Utilização De Critérios Metalúrgicos No Lingotamento Contínuo Para Construção E Validação De Um Modelo Matemático Da Solidificação

Silva¹,

Nascimento²,

Wanderley³

et al. 2017

Anais Do Seminário De Aciaria, Fundição E Metalurgia De Não-Ferrosos

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ResumoA necessidade de elevados patamares de competitividade na indústria do aço tem levado à utilização cada vez mais frequente, por parte daqueles que utilizam lingotamento contínuo, de ferramentas de modelagem matemática da solidificação. A construção dessas ferramentas, por sua vez, possui uma etapa importante de validação, onde devem ser comparados os resultados simulados com dados reais do processo sendo estudado. Dessa forma, o presente trabalho tem como objetivo utilizar critérios metalúrgicos de qualidade e processo no lingotamento contínuo para auxiliar na construção e validação de um modelo matemático da solidificação de tarugos de aço. Uma vez que há na literatura diversas formulações para os coeficientes de transferência de calor na refrigeração primária (molde) e secundária (zona de sprays), foram realizadas análises -a luz dos critérios metalúrgicos -dos resultados simulados com nove combinações dessas formulações, sendo possível, ao final, determinar qual combinação melhor modela o processo (ou máquina) em estudo. Palavras-chave: Lingotamento contínuo; Solidificação; Modelamento; Critérios metalúrgicos. CONSTRUCTION AND VALIDATION OF A CONTINUOUS CASTING SOLIDIFICATION MODEL USING METALLURGICAL CRITERIA AbstractThe need for high levels of competitiveness in the steel industry has led to increasingly use of solidification models by those who use continuous casting. During the construction of these models, it is necessary to validate the model results by comparing them with field results from the continuous casting machine being studied. Thus, this work aims to use quality and process metallurgical criteria to assist the construction and validation of a steel billet continuous casting solidification model. Once technical literature has many formulations for the heat transfer coefficients (mould and spray colling), one has analised the model results using nine combinations of these formulations and it was decided which combination resulted in the more accurate model of the process studied.

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A rapid GPU-based heat transfer and solidification model for dynamic computer simulations of continuous steel casting

Cited by 34 publications

References 33 publications

Modeling of heat flow using commercial and authorial software on the example of a permanent magnet motor

Modeling of heat flow using commercial and authorial software on the example of a permanent magnet motor

Stress analysis in solid-liquid parts of solidifying castings

Utilização De Critérios Metalúrgicos No Lingotamento Contínuo Para Construção E Validação De Um Modelo Matemático Da Solidificação

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