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Heat Transfer Performance Improvement of Twisted Tubes with Different Starts by Combination of Dimples

Tao Wang¹, Zhen Tian¹, Chen Gao¹, Quanfu Gao¹, Kewei Song^1,*

1 Lanzhou Jiaotong University, Lanzhou, 730070, China

* Corresponding Author: Kewei Song. Email: