Abstract

A model of nonstationary homogeneous nucleation of boron oxide vapor in chemically reacting gas mixtures is developed. The model is used to perform a numerical study of homogeneous nucleation of boron oxide vapor in Laval nozzles with different geometric configurations. Typical sizes of boron oxide condensation nuclei and their concentrations are determined. The potential barrier of nucleation, nucleation rate, and nucleation delay time are estimated. Important qualitative features of homogeneous nucleation evolution along the nozzle are identified. Based on the data obtained, recommendations for the application and further development of the model are developed.

中文翻译：

---

熔体喷嘴氧化硼蒸气均匀成核的数值研究。

摘要

建立了化学反应混合气体中氧化硼蒸气的非平稳均相成核模型。该模型用于对不同几何构型的Laval喷嘴中氧化硼蒸气的均匀成核进行数值研究。确定了氧化硼缩合核的典型尺寸及其浓度。估计了成核的潜在势垒，成核速率和成核延迟时间。确定了沿喷嘴均匀成核的重要定性特征。基于获得的数据，为模型的应用和进一步开发提出了建议。