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Prediction method for dendritic crystal growth in static molten steel based on parallel computing

A technology of parallel computing and prediction method, applied in the field of metallurgical continuous casting, can solve problems such as waste of computing resources, low efficiency, time-consuming efficiency, etc., and achieve the effects of improving computing efficiency, reducing computing time, and avoiding high costs

Pending Publication Date: 2020-04-10
NORTHEASTERN UNIV
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Problems solved by technology

The existing method of predicting dendrite growth in static molten steel uses serial calculations for the divided calculation domains, and executes one instruction at a time. The calculation process becomes time-consuming and inefficient, which is a waste of computing resources.

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  • Prediction method for dendritic crystal growth in static molten steel based on parallel computing
  • Prediction method for dendritic crystal growth in static molten steel based on parallel computing
  • Prediction method for dendritic crystal growth in static molten steel based on parallel computing

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Embodiment Construction

[0063] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0064] In this embodiment, the method for predicting dendrite growth in static molten steel based on parallel computing of the present invention is used to predict the dendrite growth of a low-carbon peritectic steel sample in a steel plant during the production process. like figure 1 Shown, the prediction method of dendrite growth in the standing molten steel based on parallel computing of the present invention, comprises the following steps:

[0065] Step 1: Collect physical property parameters and proportion data of each component of the steel to be studied; the physical property parameters include liquidus slope, melting point temperature, and molar volume.

[0066] In this embodiment, the carbon content of the low-carbon peritectic steel sample is 0.83 at.%, and the pseudo-binary phase diagram of the steel sample is as follows Figure 4 ...

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Abstract

The invention relates to the technical field of metallurgy continuous casting, and provides a prediction method for dendritic crystal growth in static molten steel based on parallel computing. The method comprises the following steps: collecting physical property parameters of to-be-studied steel and proportion data of each component; calculating a control equation of a phase field and a solute field according to the collected physical property parameter data and a phase field method model: writing multi-thread program codes based on parallel calculation, distributing a phase field variable and a concentration calculation process of an i-th node to an i-th thread, and setting a boundary condition and a control condition; enabling the n threads to execute the multi-thread program codes based on parallel computing at the same time, and enabling the i-th thread to output the phase field variable and concentration of the i-th node to an (n + 1)-th thread; and enabling the (n + 1)-th threadto convert the phase field variables and concentrations of the n nodes into an image form to obtain the growth process of dendrites in the static molten steel. According to the method, the growth process of the dendritic crystal in the static molten steel can be reproduced, and the dendritic crystal growth prediction accuracy and calculation efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of metallurgical continuous casting, in particular to a method for predicting dendrite growth in static molten steel based on parallel computing. Background technique [0002] The continuous casting production process of steel is a process in which the molten steel is gradually solidified and formed under the action of cooling. When the molten steel flows through the crystallizer and cooled in the cooling zone, the molten steel solidifies from a liquid phase to a solid phase. The starting point of solidification is the crystal nucleus. After the crystal nucleus in molten steel is formed, it first grows in a spherical shape, but this spherical growth will soon become unstable, and eventually several preferential growth directions will be formed along the dominant growth direction. The crystal grains are composed of Spherical growth transforms into dendritic growth, which eventually grows into dendrites. Duri...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16C60/00G06Q10/04G06Q50/04G06F9/50
CPCG16C60/00G06Q10/04G06Q50/04G06F9/5027G06F2209/5018Y02P90/30
Inventor 罗森王鹏刘光光王卫领朱苗勇
Owner NORTHEASTERN UNIV
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