火箭煤油减阻剂的研究进展  

Research progress of drag reduction agent for rocket kerosene

作　　者：孙彬 陈雪娇 孙海云[2] 郭永胜[1] 方文军[1] SUN Bin;CHEN Xuejiao;SUN Haiyun;GUO Yongsheng;FANG Wenjun(Department of Chemistry,Zhejiang University,Hangzhou 310058,China;Beijing Institute of Aerospace Testing Technology,Beijing 100074,China)

机构地区：[1]浙江大学化学系,浙江杭州310058 [2]北京航天试验技术研究所,北京100074

出　　处：《火箭推进》2024年第5期23-32,共10页Journal of Rocket Propulsion

基　　金：国家自然科学基金(22127802)

摘　　要：在火箭煤油中加入减阻剂是提高其在管道中的流动能力和降低能耗的有效手段,具有成本低、工艺简单、效果显著和可靠性高等特点。综述了减阻剂的种类、添加量、相对分子量、管径、流体流速、雷诺数、流体温度和热流密度等工况参数对火箭煤油减阻和换热特性的影响,从分子动力学模拟和计算流体动力学模拟两个方面介绍了火箭煤油减阻剂对减阻和换热数值模拟的研究进展,实验研究和数值模拟结果都指出了减阻与传热恶化相矛盾的核心科学问题亟待解决,总结了黏弹性聚合物的减阻率提升机制、聚合物分子断裂和解聚的减阻率退化机制,进一步从实验研究、数值模拟和机理探究这3个角度指出减阻研究的发展方向,期望为新型高效减阻剂的开发和应用提供参考。Adding drag reduction agent to rocket kerosene is an effective means to improve its flow capacity in pipelines and reduce energy consumption,which is characterized by low cost,simple process,significant effect and high reliability.In this paper,The type,addition amount and relative molecular weight of drag reduction agent,as well as the working condition parameters such as pipe diameter,flow rate,Reynolds number,fluid temperature and heat flow density on the drag reduction and heat transfer characteristics of rocket kerosene are reviewed.The progress of numerical simulation of the drag reduction and heat transfer by rocket kerosene drag reduction agent is introduced from the aspects of molecular dynamics simulation and computational fluid dynamics simulation.Both experimental studies and numerical simulation results have pointed out the core scientific problem of drag reduction in contradiction to heat transfer deterioration that urgently needs to be solved.The enhancement mechanism of drag reduction of viscoelastic polymer and the degradation mechanism by molecular scission and de-aggregation of polymer are summarized.The direction of drag reduction research are further pointed out from the aspects of experimental studies,numerical simulations and mechanism investigations.The aim is to provide necessary reference information for the development and application of novel drag reduction agents with high-efficiency.

关 键 词：火箭煤油 聚合物 减阻率 减阻剂 作用机制 

分 类 号：O63[理学—高分子化学]