The Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry,South China University of Technology,Guangzhou 510640,China;
The Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry,South China University of Technology,Guangzhou 510640,China;
The Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry,South China University of Technology,Guangzhou 510640,China;
The Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry,South China University of Technology,Guangzhou 510640,China;
compound heat transfer,spaced twisted-tape,converging-diverging tube,swirl flow;