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Modeling Processes of Emergence and Growth of Fractal Structures and Chamber Defects of Thermal Power Units 火电机组分形结构及腔室缺陷产生与发展的建模过程
Pub Date : 2023-06-07 DOI: 10.21122/2227-1031-2023-22-3-231-243
T. V. Ryzhova, D. N. Bukharov, S. M. Arakelyan
The paper considers modeling the emergence and growth of possible fractal structures and defects on the inner surface of the chambers of thermal power units, which allow control and regulation of the development of such stochastic dynamic processes. We are talking about the use of modeling procedures for the given analysis, which are quite universal in the framework of certain approaches. A general qualitative consideration of the modeling of processes such as the deposition of materials on a solid surface of various complex configurations, and the occurrence of its fracturing and defects of fractal types, is given. In the first part, we consider an analogy between the processes of the emergence and growth of fractal structures and chamber defects with laser processes of controlled deposition of substances on the surface of a solid body and the growth of its fracturing. A number of models have been developed for the emergence and growth of fractal inhomogeneities of various types and configurations on a solid surface with identification of the possibility of their preliminary monitoring at the initial stage of their appearance. At the same time, both various surfaces in the form of coatings and the formation of fracturing and cluster zones of inhomogeneities and defects have been analyzed. The emphasis in the course of research has been made both on the analysis of their regulated structure, and also on the dynamics of the growth of fracturing and cluster zones of heterogeneities and defects in a certain direction. At the initial stage, the indicated process of formation of fractures and cluster zones of inhomogeneities and defects in space was monitored with different scaling: nano- and microscales. This study has been carried out within the framework of an analogy under the following conditions: firstly, given control over the cha-racteristics of similar objects in the corresponding laser experiment; secondly, the presence of a real possibility of ensuring their formation on the inner surfaces of the chambers in contact with the working substance; thirdly, the possibility of such structures influencing on the efficiency of various types of thermal power units in the context of achieving the desired direction and/or undesirability of changing the indicators and characteristics of units taking into account the laws of technical thermodynamics.
本文考虑对火电机组腔室内表面可能的分形结构和缺陷的出现和发展进行建模,从而可以控制和调节这种随机动态过程的发展。我们正在讨论对给定分析的建模过程的使用,这在某些方法的框架中是相当普遍的。对材料在各种复杂结构的固体表面上的沉积,以及其破裂和分形缺陷的发生等过程的建模进行了一般性的定性考虑。在第一部分中,我们将分形结构和腔室缺陷的产生和生长过程与固体表面受控物质沉积的激光过程及其破裂的生长过程进行类比。对于固体表面上各种类型和构型的分形不均匀性的出现和增长,已经开发了许多模型,并确定了在其出现的初始阶段对其进行初步监测的可能性。同时,对涂层形式的各种表面以及不均匀性和缺陷的破裂和团簇区的形成进行了分析。在研究过程中,既有对其调控结构的分析,也有对裂缝、非均质和缺陷聚集带在一定方向上的生长动态的研究。在初始阶段,以不同的尺度(纳米尺度和微观尺度)监测空间中裂缝和不均匀性和缺陷簇区形成的指示过程。本研究是在类比的框架下进行的,在以下条件下:第一,在相应的激光实验中,对相似物体的特征进行控制;其次,确保在与工作物质接触的腔室的内表面上形成它们的真正可能性;第三,考虑到技术热力学定律,这种结构在实现所需方向和/或不希望改变机组的指标和特性的情况下,影响各种类型热电机组效率的可能性。
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