几种紧凑回热面传热和流动的实验和数值研究

运用计算流体动力学方法,建立单元控制体模型,对回热器主要型面(不锈钢锯齿型面、CC型一次表面)的传热及流动特性进行了数值模拟,并与实验结果进行对比,结果表明,数值结果与实验结果吻合的较好.在此基础上,研究了CC型面结构参数等对传热流动性能的影响,并且通过j/f的大小比较了不同结构参数下CC型面以及不锈钢锯齿型面的表面性能,为回热器的优化设计提供依据.

Numerical and experimental study on flow and heat transfer performance of some compact surface recuperators

A unit control model was established using computational fluid dynamic(CFD) method,while the heat transfer and fluid flow performances on primary surface of recuperator(stainless steel serrated fin and cross corrugated(CC) primary surface) were simulated numerically and also compared with the experimental results.The results show good consistency between numerical simulation and experimental data.To this end,the effect of CC surface structural parameters on heat transfer performance was discussed,and then the heat transfer and flow characteristics were compared for different structural scales and surface arrangements,thus providing a basis for design optimization of recuperators.