Kongkaitpaiboon, V., Ruengpayungsak, K., & Wongcharee, K. (2018). Influence of inclined circular-ring turbulators on thermohydraulic characteristics. Journal of Research and Applications in Mechanical Engineering, 3(2), 45. retrieved from https://ph01.tci-thaijo.org/index.php/jrame/article/view/140037