Flux density of salt problem

  • Thread starter kathyt.25
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Homework Statement


What is the flux density of salt in a horizontal tube, 10cm in length, connecting seawater (salinity 30g/L) to a tank of freshwater (salinity ~0) assuming no advection occurs?


Homework Equations


J (g/m2s) = C (g/m3) x V (m/s)


The Attempt at a Solution


C = 30g/L * 1L/0.01m3 = 3000g/m3
The calculation is obviously really simple, but I'm not sure what to use for time when calculating velocity (m/s). I'm given the length 10cm, but I'm assuming time has something to do with the statement "assuming no advection occurs". I feel like I'm overlooking some basic assumption.
 

Answers and Replies

  • #2
ehild
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What is advection? How can the salt be transferred through the tube?

ehild
 

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