Mathematical Modeling of Cooling High-Temperature Cylindrical Workpieces

Makarov, S. S.; Dementyev, Vyacheslav B.; Makarova, E. V.

doi:10.1016/j.proeng.2016.06.734

Cited by 12 publications

(3 citation statements)

References 3 publications

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“…The anticipated model affords, in addition, an applicable foundation for a detailed analysis of the effects of the scanning form design constraints on the specifications of the hardened zone. However, many complications were documented as the major limitations of the use of the thermal analysis, such as the complexities of heat removal from the adjacent faces of the moving instrumental parts, and the shift of negative stability of the surfaces of the various coating materials, and hence favorite the mathematical modeling approach that adapts criterial equations for the determination of the boundary conditions on the understudy surfaces, instead (Jos é Manuel et al, 2017, Makarova et al, 2016. This research aims to design an outline frame for a mathematical model to explain, evaluate, and manage the nanostructure outer surfaces of the coating constituents as a consequential result of the thermal hardening method, given the critical phase of the negative stability`s lowest temperature for the working machine part.…”

Section: Introductionmentioning

confidence: 99%

Mathematical and Numerical Simulation of the Thermally Hardened Coated Machine Surfaces

AlMaliki¹

2022

IJMMT

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The productivity of manufacturing activities is highly dependent on the quality of the processing machines and the readiness of their parts at all work times. The cutting tools are among these crucial parts for many manufacturing processes and hence their outer surfaces need continuous maintenance processes such as thermal hardening and coating. The physical and thermal properties of these outer surfaces are mathematically and numerically analyzed by the application of Ohm`s and Kirchhoff`s laws during the thermal hardening process to determine the best operation schemes and governing variables that may produce the highest performance and improve the quality of these machines` moving parts. The improvement of this maintenance process via the inclusion of the Nano-materials into the coating surfaces of the understudy parts is one of the tentative outcomes of these analyses. The results reflect the high role of the usage of inline cooling systems for the removal of heat, and that the maximum temperature in the contact area of the deformation region and corresponding processing speed, have a high share in the decision of the exterior layer`s material for the hardening work tool to develop into the critical state of shift instability.

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Section: Introductionmentioning

confidence: 99%

Mathematical and Numerical Simulation of the Thermally Hardened Coated Machine Surfaces

AlMaliki¹

2022

IJMMT

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“…The evaporation in the liquid was evaluated near the surface of the high-temperature cylindrical metal body cooled by the longitudinal water flow. The heat transfer at cooling a high-temperature metal cylinder from structural steel by the flow of a gas-liquid medium was investigated with the use of a numerical algorithm [2,3]. In [4], the flow round a high-temperature solid metal cylinder with a variable cross-section by a gas-liquid medium is considered.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the non-regular mode of cooling a high-temperature metal billet by the flow of a gas-liquid medium

et al. 2018

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A mathematical model of heat transfer at cooling a high-temperature metal billet from structural steel by the flow of a gas-liquid medium in a vertical circular channel is presented. The model has been built with the use of the continuum mechanics approaches and the theory of heat-mass transfer. The non-regular mode of cooling is considered. The results of the numerical parametric investigations of the heat transfer at cooling a metal billet are obtained for a standard regime of thermomechanical strengthening on the basis of the mathematical model of conjugate heat transfer in a two-dimensional nonstationary formulation accounting for the symmetry of the cooling medium flow relative to the longitudinal axis of a cylinder. The control volume approach is used for solving the system of differential equations. The flow field parameters are computed by an algorithm SIMPLE. For the iterative solution of the systems of linear algebraic equations the Gauss-Seidel method with under-relaxation is used. Taking into account evaporation in the liquid, the intensity of the change of the rate of cooling the material of the metal cylindrical billet by the laminar gas-liquid flow is analyzed depending on the time of cooling and the velocity of the gas-liquid flow.

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“…The numerical algorithm was used for studying the cooling of the metal cylindrical workpiece from structural steel in Ref. [7].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the flow of a gas-liquid medium in a circular channel at cooling a high-temperature metal cylinder with a variable cross-section

2017

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Abstract. The numerical simulation results of the flow of a gas-liquid medium over the high-temperature metal cylinder surface in a circular channel are presented. The flow over the solid metal cylinder with a variable cross-section by a gas-liquid medium is considered. Based on the mathematical model taking into account the cooling-media-flow axial symmetry relative to the cylinder longitudinal axis, the results of the numerical simulation of the process of solving the two-dimensional nonstationary problem of the coupled heat exchange of the gas-liquid medium flow and metal cylinder are obtained. The control volume approach is used for solving the differential equation system. The flow field parameters are calculated using the algorithm SIMPLE. For the iterative solution of linear algebraic equations, Gauss-Seidel method with under-relaxation is used. The numerical calculation results are obtained for the flow hydrodynamic parameters of the gas-liquid medium at cooling the high-temperature metal cylinder by taking into account vaporization. The values of temperatures, flow velocities, and vapour distribution in the computational domain are determined. The variation intensity of the metal cylinder surface temperature depending on the gas-liquid flow velocity is analyzed.

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Mathematical Modeling of Cooling High-Temperature Cylindrical Workpieces

Cited by 12 publications

References 3 publications

Mathematical and Numerical Simulation of the Thermally Hardened Coated Machine Surfaces

Mathematical and Numerical Simulation of the Thermally Hardened Coated Machine Surfaces

Numerical simulation of the non-regular mode of cooling a high-temperature metal billet by the flow of a gas-liquid medium

Numerical simulation of the flow of a gas-liquid medium in a circular channel at cooling a high-temperature metal cylinder with a variable cross-section

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