In the article titled “Effect of Concentric Annular Gap Flow on Wall Shear Stress of Stationary Cylinder Pipe Vehicle under Different Reynolds Numbers” [1], there was an error in equations (8) and (9). The corrected equations are shown as follows:where λc represents the flow resistance coefficient, which is related to the material of the inner wall of the pipe and the physical properties of the fluid; represents the velocity of the annular gap flow; and represents the velocity of water in the pipe. represents the lateral area of the piped vehicle.
The error was introduced during the production process of the article, and Hindawi apologises for causing this error in the article.