【Daily Question】Theoretical Foundation 2019.11.23
Thread Content
Multiple-choice question: Which of the following statements is incorrect? ( ) A. The magnitude of the flow velocity can be reflected by the density of the streamlines. B. Streamlines can only be smooth curves or straight lines. C. Only in steady flows can trajectories be used as substitutes for streamlines. D. Streamlines cannot intersect under any circumstances. Answer: D. There is more than one streamline at points where the velocity is 0 and at points where the velocity is infinite in a flow field. Hint: Extra rewards will be given to those who can explain the solution process; the answer can be found in the response!
D. Streamlines must not intersect under any circumstances
B. A streamline can only be a smooth curve or a straight line