摘要
采用CAE技术对SCR催化转化器在实际开发过程中的设计方案进行评估和优化。利用CFD技术对产品的空气动力学关键特性进行评估,对催化转化器进气管开孔密度减半的方案进行了1、1/3、2/3高度比的模拟计算,提出了用载体中截面速度均匀性系数和流量平衡性进行分析的方法,说明存在一个最佳的密度减半的开孔高度。利用FEA技术对产品进行动力学模态分析,根据计算结果对结构进行针对性的改进。研究结果表明:优化方案后提高了产品刚度,避免了共振破坏现象的发生。
Evaluation and optimization of SCR converter schemes under development and design process was conducted using CAE technology. Assessed key aerodynamic characteristics using CFD, and simulation-calculated converter inlet pipe hole density half-reduced schemes with 1,1/3 and 1/2 height ratios, a analysis method using substrate section velocity uniformity coefficient and flow balance was put forward. Analyzing result indicated that existed an optimal holing height for these schemes. By FEA method dynamic modal analysis and improvement according to the results, the product rigidity is raised, resonance damage phenomenon being avoided.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2013年第5期45-49,共5页
Chinese Internal Combustion Engine Engineering
基金
江苏省科技成果转化专项资金项目(BA2012045)
