Hoonpong, P., P. Promthaisong, and S. Skullong. “Experimental study of thermal performance in a tubular heat exchanger using inclined perforated vortex rings”. Journal of Research and Applications in Mechanical Engineering 8, no. 2 (November 10, 2020): 148–157. accessed April 22, 2026. https://ph01.tci-thaijo.org/index.php/jrame/article/view/240333.