微燃气轮机环型回热器数值模拟及实验研究.pdfVIP

上海理工大学学报 32 2 J. University of Shanghai for Science and Technology Vol. 32No. 2 2010 :1007- 6735(2010)02- 0191- 05 1 1 1 1 2 刘彩赢 , 徐之平 , 张磊 , 张伟荣, 王崇俊 ( 1. , 200093; 2. , 100074) : 基于层流的假设运用计算流 动力学方法对微型燃气轮机环型回热器交错波纹原表面通道 两侧流 耦合换热与流动特性进行数值模拟及实验研究. 结果表明,数值计算结果和实验结果之间 的误差在允许的范围内. 在此基础上,通过改变通道结构进一步研究其传热及流动特性, 为回热器 设计提供参考. : 环形回热器; 层流; 交错波纹原表面 : TK 124 : Numerical and experimental study on flow and eat transfer performance of annular primary surface recuperator in microturbine 1 1 1 1 2 LIU Ca-i ying , XU Zh-i ping , ZH NG Lei , ZH NG We-i rong , W NG Chong-jun ( 1. School of Energy and Power Engineering, University of Shanghai for Science and Technology , Shanghai 200093, China ; 2. The 31st Research Institute of C SIC, Beijing 100074, China) Abstract: A model of cross wavy(CW ducts was established by using computational fluid dynamic method, and the flow and heat transfer characteristics of annular primary surface recuperator in mi- croturbine were simulated numerically under the laminar flow condition and investigated experi- mentally. The results show good consistency between numerical simulation and experimental data. Furthermore, the effect of geometrical parameters of CW surface on heat transfer performance was discussed, and then the flow and heat transfer characteristics were compared for different structural parameters of CW. The study provides a basis for design optimization of recuperators. Key words: annular recuperator ; laminar flow ; cross wavy prim ary surface ( ) 25% ~ . [2- 3] [4]