Retraction Note: The application of non-uniform magnetic field for thermal enhancement of the nanofluid flow inside the U-turn pipe at solar collectors

• Sida Li,
• Liudan Mao,
• As’ad Alizadeh,
• Xin Zhang,
• S. Valiallah Mousavi

Affiliations

Sida Li

Key Laboratory of Crop Harvesting Equipment Technology of Zhejiang Province, Jinhua Polytechnic

Liudan Mao

Chongqing Water Conservancy & Electric Power Construction Survey & Design Research Institute Hangzhou Branch

As’ad Alizadeh

Department of Civil Engineering, College of Engineering, Cihan University-Erbil

Xin Zhang

Zhejiang Tongjing Technology Co. Ltd

S. Valiallah Mousavi

Department of Mechanical Engineering, Technical and Vocational University (TVU)