Saleh Mahdi, Q., & Shokor Golam, A. (2019). NUMERICAL INVESTIGATION OF HEAT TRANSFER ON LAMINAR FLOW IN CIRCULAR TUBE FITTED WITH CONICAL SPRING INSERTS AND NANOTECHNOLOGY. JOURNAL OF ENGINEERING AND SUSTAINABLE DEVELOPMENT, 22(02 Part -2), 146-160. Retrieved from http://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/505