The Friction Coefficients and the Nusselt Number from an Educational Point of View

교육적 측면에서의 마찰계수와 누셀트 수

In the present study, the friction coefficients (Fanning and Moody coefficients) and the Nusselt number is reviewed from an educational point of view. It is discussed that these dimensionless numbers can be treated with two lengh scales. Also, the similarity between the momentum and heat transfer is discussed based on the length scales.