Phase transition, droplet dynamics and efficiency predictions in high-speed vapor flows

高速蒸汽流中的相变、液滴动力学和效率预测

• 批准号: 238656-2006
• 负责人: Gerber, Andrew
• 金额: $ 1.75万
• 依托单位: University of New Brunswick
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=366033
• 关键词: Phase; transition; droplet; dynamics; efficiency

This proposal is a continuation of research efforts in multiphase Computational Fluid Dynamics (CFD) emphasizing nonequilibrium phase transition in high-speed gas/liquid systems.  Nonequilibrium phase transition in power production systems has a significant impact on efficiency due to irreversible thermodynamic losses.   With renewed global efforts to improve the efficiency of power plants, and in this manner reduce dangerous emissions (i.e. those impacting global warming), an emphasis on improved design of power plant components that operate with significant levels of irreversibility is now on-going.  The use of CFD as a design tool is commonplace for almost all fluid transport components in large-scale power production. However CFD models for phase transition in high speed vapor flows is an area of active research, particularly for application in industrial settings where flows are highly three-dimensional with a wide range of phase transition behavior.  This proposal supports this on-going research emphasis.   The research is also supportive of NSERC's strategic mechanical engineering research emphasis in advanced computational technologies.  The general nature of the computational models developed will be applicable to the development of alternative energy systems, also a strategic research area in mechanical engineering.

该建议是多相计算流体动力学（CFD）研究工作的延续，强调高速气/液系统中的非平衡相变。由于不可逆的热力学损失，发电系统中的非平衡相变对效率有显着影响。 随着全球重新努力提高发电厂的效率，并以这种方式减少危险排放物（即影响全球变暖的排放物），重点是改进发电厂部件的设计，这些部件的运行具有显著的不可逆性。CFD作为设计工具的使用对于大规模发电中几乎所有的流体输送部件都很常见。然而，高速蒸汽流中相变的CFD模型是一个活跃的研究领域，特别是在工业环境中的应用，其中流动是高度三维的，具有广泛的相变行为。 这项研究也支持NSERC的战略机械工程研究重点在先进的计算技术。开发的计算模型的一般性质将适用于替代能源系统的发展，也是机械工程的战略研究领域。