Oleksandr Cherednichenko, Mykhaylo Tkach, Oleksandr Mytrofanov, D. Kostenko
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摘要

本文讨论了采用热化学燃料处理的船舶动力装置过程数学建模方法研究的方法学方面。考虑了结构和功能块中物理和化学过程的研究结果,模拟了热力学循环的各个环节。以物质流和能量流的形式将模块与链接相结合,使得对电源模块数学模型的完整方案进行建模成为可能。由于热化学燃料处理系统柴油-燃气轮机联合发电综合体过程的多样性和复杂性,在建模时,分别确定动力设备的特性,然后将得到的结果合并,并以物质流和能量流的形式将模型结合起来。使用Aspen Plus物理和化学过程建模系统创建了燃气涡轮发动机、回收电路和热化学燃料处理单元的数学模型。利用CHEMKIN软件包对内燃机工作过程进行建模。事实证明,作为热化学燃料处理的动力模块的一部分,热机的通用数学模型需要调整所选的基本特性。因此,结构功能块和块群的数学模型包含了通过目标函数验证后建立模型的算法。提出的算法为现有或未来的燃气涡轮发动机和内燃机提供了数学模型的验证。这些算法为采用热化学燃料处理的柴油-燃气轮机发电机组设备参数的正确调整提供了可能。基于CHEMKIN软件包的内燃机工作循环数学模型为初步评估工作缸内的能量转换效率提供了机会。基于CHEMKIN软件包对内燃机运行周期数学模型的充分性进行了评价,结果表明所得结果与实验数据吻合较好。根据该模型得到的计算数据的最大均方根误差在8.5%以内。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Математичне моделювання процесів в дизель-газотурбінних енергетичних комплексах з термохімічною обробкою палива
This paper discussed the methodological aspects of the study using methods of mathematical modeling of processes in ship power plants with thermochemical fuel treatment. The results of the study of physical and chemical processes in structural and functional blocks, simulating individual links of the thermodynamic cycle, are considered. The combination of blocks with links in the form of material and energy flows makes it possible to model the complete scheme of the mathematical model of the power module. Due to the diversity and complexity of the processes in the combined diesel-gas turbine power complex with a thermochemical fuel treatment system, when modeling, the characteristics of the power equipment were determined separately, followed by merging the results obtained and combining the models with links in the form of material and energy flows. Mathematical models of a gas turbine engine, a recycling circuit, a thermochemical fuel treatment unit were created using the Aspen Plus physical and chemical processes modeling system. Working processes in the internal combustion engine were modeled using the CHEMKIN software package. It has been proven that the universal mathematical models of heat engines, which are part of the power module with thermochemical fuel treatment, require adjustment of the selected basic characteristics. Therefore, mathematical models of structural-functional blocks and groups of blocks contain algorithms for setting up models when they are verified by objective functions. The proposed algorithms provide verification of the developed mathematical models in terms of existing or prospective gas turbine engines and internal combustion engines. These algorithms provide the possibility of correct adjustment of the equipment parameters of diesel-gas turbine power complexes with thermochemical fuel treatment. The mathematical model of the internal combustion engine operating cycle based on the CHEMKIN software package provides an opportunity to conduct a primary assessment of the efficiency of energy conversion in the working cylinder. The results of evaluating the adequacy of the mathematical model of the ICE operating cycle based on the CHEMKIN software package showed a satisfactory agreement between the obtained results and experimental data. The maximum root-mean-square error of the calculated data obtained on the basis of the model is within 8.5%.
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