Question: 1. 5 points (a) Define the following terms with its mathematical description. i. Streamlines ii. Pathlines iii. Streaklines iv. Vortex lines v. Circulation. (b) 4

 1. 5 points (a) Define the following terms with its mathematical

1. 5 points (a) Define the following terms with its mathematical description. i. Streamlines ii. Pathlines iii. Streaklines iv. Vortex lines v. Circulation. (b) 4 points The velocity field for fully-developed steady incompressible laminar flow in a circular pipe is Vz = Umax - BZ ) , Ve = 0, where r denotes the radial distance from the pipe's center and R denotes the pipe's radius. Determine the radial velocity field vr(r, z), if umar is constant

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