计算力学学报2025，Vol.42Issue(5)：714-721,8.DOI:10.7511/jslx20240612002
基于多可信度代理模型的导弹气动数据生成技术研究
Research on missile aerodynamic data generation technology based on multi-credibility proxy model
摘要
Abstract
A surrogate model is a new research idea direction of aerodynamic data generation.A traditional surrogate model relies on a large number of high-precision simulation sample points and their responses values to ensure the accuracy of the model.A multi-credibility surrogate model can reduce the computational cost while maintaining a certain accuracy by integrating multi-layer high and low credibility models,which is of great significance for reducing a missile development cycle.In this paper,the influence of different numbers of low-confidence sample points on the multi-confidence model and the optimal ratio of high-low-confidence sample points are studied,and a multi-confidence sampling method suitable for aerodynamics data is proposed.It is applied to the construction of three multi-credibility surrogate models in the prediction of missile aerodynamic data,among which the Co-Kriging model has the best comprehensive prediction effect.The recommended ratio of high and low confidence sample size is between 1∶4 and 1∶3.关键词
气动数据/多可信代理模型/高低可信度样本点比例/K-means聚类算法Key words
erodynamic data/multi-trusted proxy model/the proportion of high and low confidence sample points/K-means clustering algorithm分类
力学引用本文复制引用
付朋真,陈江涛,张培红..基于多可信度代理模型的导弹气动数据生成技术研究[J].计算力学学报,2025,42(5):714-721,8.基金项目
国家数值风洞工程项目(NNW) （NNW）
国家自然科学基金(52175214) （52175214）
国家自然科学基金委员会-中国工程物理研究院NSAF联合项目(U2230208)资助. （U2230208）
