Question: A liquid is spilled on a flat surface. The length of the spill is 80 cm. (along x-axis) and 30 cm. in width. The

A liquid is spilled on a flat surface. The length of the

A liquid is spilled on a flat surface. The length of the spill is 80 cm. (along x-axis) and 30 cm. in width. The liquid has a vapor pressure of 190 kPa. at 25 C. The diffusion coefficient of this solvent is D = 2 x 10-7m/s. A fan is placed near the edge of the table to blow air over the surface to evaporate the liquid. The air flows with a speed of 1.5 m/s over the table. Assume that the horizontal velocity near the liquid surface changes as y Vx = 1.5- 0.01 Here y is the distance from the liquid surface. 1. Solve the problem using a self-similarity transformation. 2. What is the flux of solvent evaporating from the surface at a distance 10 cm. from the table's edge? 3. What is the total molar flow rate from the liquid surface?

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