Modelling of breakup processes in transient Diesel fuel sprays

瞬态柴油喷雾的分解过程建模

• 批准号: EP/F069855/1
• 负责人: Sergei Sazhin
• 金额: $ 34.25万
• 依托单位: University of Brighton
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2009
• 资助国家: 英国
• 起止时间: 2009 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF069855%2F1
• 关键词: Modelling; breakup; processes; transient; Diesel

This proposal is concerned with the development of new mathematical models for transient Diesel fuel jets, taking into account their instabilities and acceleration, in a form suitable for implementation into computational fluid dynamics (CFD) codes. The distinction between convective, absolute and global instabilities and the effects of cavitation on the formation of Diesel fuel sprays will be taken into account. The latter effects are expected to appear via the modification of the boundary conditions for jets at the exit of the nozzle. Effects of boundary disturbances on the breakup of the jet will be studied experiementally using a three dimensional laser vibrometer. The jet acceleration is expected to lead to partial stabilisation of the jet. The effects of jet acceleration and jet instabilities will be used to develop a new stochastic model for the primary spray breakup in a form suitable for implementation into CFD codes. This stochastic model will be implemented into a customised in-house version of the KIVA-2 CFD code. This code will be used for modelling fluid dynamics, heat transfer and combustion processes in Diesel engines. The results of the modelling will be validated against in-house experimental data. This will open the way to implement new models to other CFD codes, including commercial ones.

该建议涉及瞬态柴油燃料喷射的新的数学模型的开发，考虑到它们的不稳定性和加速，以适合于实施到计算流体动力学（CFD）代码的形式。将考虑对流、绝对和全局不稳定性之间的区别以及空化对柴油燃料喷雾形成的影响。后者的影响，预计将出现通过修改边界条件的喷嘴出口处的射流。利用三维激光测振仪对边界扰动对射流破碎的影响进行了实验研究。预计射流加速将导致射流的部分稳定。射流加速度和射流不稳定性的影响将用于开发一种新的随机模型，以适用于CFD代码的形式用于初级喷雾破碎。该随机模型将在KIVA-2 CFD代码的定制内部版本中实施。该代码将用于模拟柴油机中的流体动力学、传热和燃烧过程。将根据内部实验数据对建模结果进行验证。这将为其他CFD代码（包括商业代码）实现新模型开辟道路。

项目成果

Transient unstable jets: mathematical analysis and applications

瞬态不稳定射流：数学分析与应用

• 发表时间: 2010
• 期刊: 5th International workshop on multi-rate processes and Hysteresis (MURPHYS), University of Pecs, Pollack Mihaly Faculty of Engineering (Hungary). Book of Abstract
• 作者: Healey J.J.

Jet and Vortex Ring-Like Structures in Internal Combustion Engines: Stability Analysis and Analytical Solutions

内燃机中的射流和涡环结构：稳定性分析和解析解

• DOI: 10.1016/j.piutam.2013.04.025
• 发表时间: 2013
• 期刊: Procedia IUTAM
• 作者: Sazhin S

Modal and non-modal stability of round viscous jets

圆形粘性射流的模态和非模态稳定性

• 发表时间: 2012
• 期刊: Conference proceedings (not a journal article)
• 作者: Boronin, S.A.

Investigation of the internal dynamics of diesel nozzles by time-resolved laser doppler vibrometry

通过时间分辨激光多普勒测振法​​研究柴油喷嘴的内部动力学

• 发表时间: 2012
• 期刊: ICLASS 2012 - 12th International Conference on Liquid Atomization and Spray Systems
• 作者: Crua C.

Transient unstable round jets: mathematical analysis and

瞬态不稳定圆形射流：数学分析与

• 发表时间: 2011
• 期刊: Book of Abstracts for 22nd International Symposium on Transport Phenomena, Delft November 8-11, 2011
• 作者: Boronin, S.A.,