航行体带泄气空泡出水非定常流动特性与机理研究

Modern naval warfare is increasingly making demands on the launch depth of missile to improve invisiblility.Exiting gas from chamber is an effective means to reduce the load and to launch deeply. The flow characteristics and interaction with vehicle of exiting gas cavity is different with natural cavity and ventilated cavity. This technical breakthrough depend on recognition and understanding of unsteady flow characteristics and fluid dynamic mechanism with exiting gas..This research project will study on crucial issues such as exiting gas cavity flow structure,its properties of hydrodynamic force by theoretical analysis,numerical simulation and mechanism experiment. The characteristics of flow structure in the cavity of exiting gas will be recognized.The influencing rule of exiting gas cavity to hydrodynamic force will be grasped, Force modeling and ballistic calculation method will be established. The numerical simulation method and responsive software will be developed together..The research results of this project will provide important basic data,theoretical bas,technical approach for research of underwater weapon in our country,and set the foundation for design and manufacture of the new generation main battle weapon.

现代海战对潜射导弹提出了增加发射深度、提高其隐蔽性的要求。空腔泄气是降低载荷进而实现大深度发射的有效手段。泄气空泡的流动特性及其与航行体的相互作用与自然空泡、通气空泡有很大不同，该项技术的突破，依赖于带泄气空泡非定常流动特性与机理的认识和把握。.本研究项目将通过理论分析、数值模拟与机理试验，对泄气空泡流动结构、流体动力特性等关键科学问题开展研究。发展泄气空泡流动研究的数值模拟方法，研制具有自主产权的计算软件。深入认识泄气空泡穴内流动结构特征；掌握泄气空泡对流体动力的影响规律，建立流体动力的模型，形成泄气空泡弹道计算方法。.本项目的研究成果将为发展我国的水中兵器的研究提供重要的基础数据、理论依据和技术手段，为海军新一代主战武器的设计和研制打下基础。

空腔泄气是降低载荷进而实现大深度发射的有效手段。泄气空泡流动特性的研究具有重要的科研价值和工程意义。本项目通过理论分析、数值模拟与机理试验，对泄气空泡流动结构、流体动力特性等关键科学问题开展研究。建立了泄气空泡流场研究的数值模拟方法；分析了泄气空泡流动结构特征，揭示了泄气空泡对流体动力的影响规律；建立了泄气空泡弹道计算方法，分析了泄气空泡弹道规律。本课题提供的流场求解数值模拟方法可以为相关型号水下发射过程流体动力设计提供研究手段。腔体泄气规律、泄气泡流场结构、及其对流体动力及水弹道的影响规律等研究成果，可为相关潜射武器的水动力、水弹道、水载荷设计提供数据支撑。