### CFD-Fluent算例仿真手册2021-R1知识点详解 #### 一、CFD Fluent简介 CFD（Computational Fluid Dynamics）是一种利用数值分析和数据结构技术求解流体力学问题的方法。Fluent是Ansys公司旗下的一个高性能计算流体动力学软件，广泛应用于航空航天、汽车制造、电子设备等多个领域。Fluent以其强大的功能和易用性著称，能够模拟复杂的流动现象，包括但不限于湍流、多相流以及化学反应等。 #### 二、高超声速飞行器仿真实例解析 在“CFD-Fluent算例仿真手册2021-R1”中，关于高超声速飞行器的仿真案例是该手册的一大亮点。高超声速飞行器通常指速度超过5马赫的飞行器，这类飞行器在大气层内高速飞行时会产生极端高温和复杂的气动特性。因此，在设计过程中需要通过CFD仿真来优化其外形设计，预测气动加热情况，并评估热防护系统性能。 **具体步骤如下：** 1. **几何建模与网格划分：** - 使用Ansys Workbench中的ICEM CFD或Ansys Meshing进行几何模型的创建与网格划分。 - 考虑到高超声速流动中存在激波和边界层分离等复杂现象，需要对这些区域进行精细网格划分以提高计算精度。 2. **物理模型选择：** - 对于高超声速流动，通常采用Euler方程或Navier-Stokes方程进行模拟。 - 在处理高焓流场时，还需要考虑化学反应和非平衡效应等因素。 3. **边界条件设置：** - 设置入口速度为高超声速，出口边界可以采用超声速出口条件。 - 表面边界条件需根据实际热防护材料性质设置相应的热导率和比热容。 4. **求解设置：** - 选择合适的求解算法（如压力基或密度基）以及收敛准则。 - 对于瞬态仿真，还需设置时间步长和总仿真时间。 5. **结果后处理与分析：** - 利用Ansys Fluent自带的后处理工具或导入Ansys CFX-Post进行数据分析。 - 分析结果主要包括气动加热分布、流场结构以及压力分布等关键指标。 #### 三、等离子体及其在高超声速流动中的应用 随着飞行器速度的提高，当达到一定速度（通常为5-6马赫）时，飞行器周围的空气会被压缩至极高温度，形成等离子体鞘套。这种等离子体鞘套不仅影响飞行器的热防护性能，还可能干扰无线电信号传输，成为高超声速飞行面临的一大挑战。 **等离子体鞘套的主要特点：** - **电离程度：**等离子体由电子、离子组成，其电离程度随温度升高而增加。 - **热导率：**相比气体，等离子体具有更高的热导率，这意味着飞行器表面将承受更大的热负荷。 - **电磁屏蔽效应：**等离子体对电磁波有吸收作用，可能导致通信中断。 **等离子体鞘套仿真方法：** 1. **化学反应模型：** - 建立准确的化学反应模型，考虑电子激发、解离、复合等过程。 - 需要精确计算各种反应速率常数以及等离子体组分浓度。 2. **电磁场耦合：** - 为了研究等离子体鞘套对无线电信号的影响，需建立电磁场与流动场之间的耦合关系。 - 这涉及到电磁场求解器与CFD求解器之间的数据交换。 3. **多物理场耦合：** - 实现流场、热场、化学反应场以及电磁场之间的耦合，全面评估等离子体鞘套对飞行器性能的影响。 #### 四、结语 “CFD-Fluent算例仿真手册2021-R1”提供了丰富的案例和详细的步骤指导，对于从事高超声速飞行器设计与研发的工程师来说是一份非常有价值的参考资料。通过学习该手册中的实例，不仅可以加深对CFD理论的理解，还能掌握先进的仿真技术，从而更好地应对未来航空领域的挑战。

candence仿真手册，教你快速学会仿真过程。

sentaurus器件仿真手册

STK帮忙，很有用，了解仿真的原理，怎么调参数，好好学习

第七章 实例（无线传感器网络移动节点定位仿真）································ ····179 概述····································································································································································· 179 7.1 移动定位算法介绍··································································································································· 179 7.1.1 室内移动节点定位算法································ ································ ································ ········ 179 7.1.1.1 Active Badge 系统································ ································ ································ ··········· 180 7.1.1.2 RADAR 系统································ ································ ································ ··················· 180 7.1.1.3 Cricket 系统································ ································ ································ ····················· 180 7.1.2 室外移动节点定位算法································ ································ ································ ········ 181 7.1.2.1 基于静态定位的移动定位算法 ································ ································ ····················· 181 7.1.2.2 纯移动定位算法································ ································ ································ ············· 182 7.2 移动定位算法的 OMNeT++仿真········································································································· 183 7.2.1 MCL（Monte Carlo Localization）定位算法简介 ································ ······························· 183 7.2.2 MCL（Monte Carlo Localization）的 OMNeT++仿真································ ························ 185 7.2.2.1 建立网络拓扑································ ································ ································ ················· 185 7.2.2.2 编码阶段································ ································ ································ ························· 190 7.3.总结和发展趋势·························································

自己从官网和手册中整理的例程文件合辑，也有自己添加的注释 example 里是自己整理的四个介绍文档对应的程序以及官网例程对应的.ipynb文件 examples 里是官网提供镜像中关于NEST仿真的例程 https://blog.csdn.net/qq_39295220/article/details/108960005

Robocup 2d仿真手册（中文）包括Server的中文手册 中科大 合肥工大 的手册

PSIM官方使用手册，入门必备，精确到模块的功能及用法，为初学者提供专业的指导还等什么？！！！！！！！！！

这是omnet++WSN仿真手册，里面一步步的教你如何模拟仿真一个路由协议工作流程

Cadence_spectreRF仿真手册.pdf 给cadence初学者