基于CFD的流体力学数据模拟与实验研究

武汉科技大学本科华业论文摘要本研究基于计算流体力学(CFD)方法，采用STAR-CCM+软件构建机械能转化实验与管内流体流动阻力实验的简化数值模型，系统分析管内流体速度分布、压降特性、阻力损失等流体流动规律。通过对比传统实验数据与模拟结果，验证数值模拟的有效性。模拟结果显示，C℉D模拟的流体流动特性与实验基本相符，且在数值计算上与实验测定值较一致，同时模拟中模型与参数的选择也会影响模拟结果的可靠性。研究结果表明，C℉D技术可以有效再现传统实验结果，其可视化的数据输出功能可直观展示流场细节，有效解决传统实验观测盲区问题。在实验教学中引入C℉D数值模拟可以构建“理论学习、计算模拟和实验教学”三位一体的教学模式，改变传统实验教学的思维模式，提升实验教学质量。关键词：C℉D模拟：管内流体流动阻力：机械能转化：实验教学武汉科技大学本科华业论文AbstractIn this study,based on the computational fluid dynamics(CFD)method,STAR-CCM+software is used to construct a simplified numerical model ofthe mechanical energy conversionexperiment and the fluid flow resistance experiment in the pipe,and systematically analyze thefluid flow laws such as velocity distribution,pressure drop characteristics,resistance loss andso on in the pipe.The effectiveness of numerical simulation is verified by comparing thetraditional experimental data with the simulation results.The simulation results show that theCFD simulation of the fluid flow characteristics and experiments are basically consistent withthe numerical calculations and experimental measurements are more consistent,while thesimulation of the model and the choice of parameters will also affect the reliability of thesimulation results.The results show that CFD technology can effectively reproduce the traditionalexperimental results,and its visual data output function can intuitively show the details of theflow field,effectively solving the problem of traditional experimental observation of the blindspot.The introduction of CFD numerical simulation in experimental teaching can build a three-in-one teaching mode of "theoretical learning,computational simulation and experimentalteaching",which can change the traditional thinking mode of experimental teaching andimprove the quality of experimental teaching.Key words:CFD simulation;Fluid flow resistance in pipe;Mechanical energy conversion;experimental teaching武汉科技大学本科华业论文目录1绪论1.1研究背景与意义1.2国内外研究现状.21.3流体力学基本理论.21.4C℉D技术的发展历程、软件工具及其现实应用.31.5本文主要研究内容.42流体力学基础实验与CFD模拟.52.1流体机械能转化实验2.1.1传统实验方法2.1.2CFD模拟流程建立82.2管内流体流动阻力实验102.2.1传统实验方法102.2.2CFD模拟流程建立..e113流体力学基础实验与模拟研究123.1机械能转化实验结果与分析...-..123.1.1实验数据与模拟条件设定123.1.2流速实验数据与模拟结果123.1.3压力实验数据与模拟结果」143.1.4阻力系数测定与模拟对比183.2管内流体流动阻力实验结果与分析193.2.1实验数据与模拟条件设定193.2.2流速实验数据与模拟结果203.2.3压力实验数据与模拟结果203.2.4直管摩擦系数与模拟对比213.4CFD模拟流程的优化223.4.1模型优化.22武汉科技大学本科毕业论文3.4.2参数优化253.5结合CFD技术的实验流程改进263.6本章小结274结论28参考文献29致谢31IV