Semi-Semester Effect on Learning the Navier-Stokes Equation

The data on student performance in learning the Navier–Stokes (NS) equation, in 2023, accompanied by published data, indicate that semi-semester study is not beneficial for undergraduate students in mastering the equation. Semi-semester studies in 2021 and 2023 showed lower scores in NS equation examinations than those from one-semester studies in 2020 and 2022. The errors caused by not grasping both the NS equation and the boundary condition showed the same defect in the semi-semester study for students who lost more than 5 points (out of a possible 20) on the examination. Moreover, the error ratio caused by forgetting the equation alone for all the students was approximately 20% for semi-semester study and approximately 0% for one-semester study, showing the difference between the students and the time effect of the study.