确定气动前翼阻力系数的数学模型与自然模型的比较分析

Y. Nosova, Oleg Avrunin, N. N. Shushlyapina, Ibrahim Younouss Abdelhamid, Alofy Bander Aly Saed
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引用次数: 0

摘要

本文对计算机头气动阻力系数的数学模型和全尺寸模型进行了比较分析。这项工作的目的是评估数学模型和自然模型在确定空气动力学鼻阻力系数方面的充分性,以评估根据计算机断层扫描诊断数据研究上呼吸道内部结构的真实个性化模型的几何和功能特征,从而开发一种计算机规划鼻外科干预方法的可能性。根据3D打印获得的全尺寸模型的实验测试结果,可以通过获得相应给定气流流速下的压降值-总损失来计算气动前端阻力系数的值。在这种情况下,气动鼻阻力系数值之间的差异不超过15%,其原因是与计算鼻腔气动模型的方法有关的方法误差,特别是不可能考虑到所有局部干扰及其相互影响,以及实验测试中全尺寸模型的空气通道塑料表面的特性。
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Comparative Analysis of Mathematical and Natural Models in Determining the Coefficient of Aerodynamic Nose Drag
The paper presents a comparative analysis of mathematical and full-scale models in determining the aerodynamic nose drag coefficient. The aim of the work is to assess the adequacy of mathematical and natural models in determining the aerodynamic nose drag coefficient to assess the possibilities of developing an approach for computer planning of rhinosurgical interventions based on the study of the geometric and functional characteristics of real personalized models of the internal structure of the upper respiratory tract according to the diagnostic data of computed tomography. According to the results of experimental tests of a full-scale model obtained by 3D printing, it is possible to calculate the value of the aerodynamic nose drag coefficient by obtaining the pressure drop values - total losses for the corresponding given air flow rates. The discrepancy between the values of the aerodynamic nose drag coefficients in this case did not exceed 15% and is explained by methodological errors associated with the approaches in calculating the aerodynamic model of the nasal cavity, in particular, the impossibility of taking into account all local disturbances and their mutual influence, and the properties of the plastic surface of the air channels of the full-scale model during experimental tests.
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