So, for a cyclic corrosion test system, I need a nozzle or arrangement of nozzles that provides a flow rate of 45ml-140ml of salt solution per hour to an area 60cm square. All commercial nozzles I've been able to find with non-flat spray patterns have much higher flow volumes. Does anyone know if a specialty supplier for this type of equipment?

Also, I need to ensure that the area is saturated as evenly as possible - what sort of FEA or simulation program would be best for analyzing the distribution of mass/fluid in a spray arrangement?

  • $\begingroup$ If you want droplets, you'll need a fluidics based distributor like a windshield washer nozzle that operates for a few seconds every minute. Otherwise you can use a mister in a fan box. I think four windshield nozzles in a big box would do pretty well. You may need to swap out the nozzles and clean them pretty often though. $\endgroup$
    – Phil Sweet
    Sep 22 '19 at 8:21

Why not just use a standard salt spray cabinet ? I am sure it can use different salts other than sea salt. Those we had were roughly 4 ft. cubes which may be big for your work , but may have future uses. And a standard unit results are easy to compare to literature and/or publish. And as a standard unit it would have some resale value. I don't remember the particular manufacturer but it was some years ago and they have probably changed names.

  • $\begingroup$ The project is to design and construct the test apparatus, so that's not really a viable option. $\endgroup$ Sep 22 '19 at 18:06
  • $\begingroup$ Designing it to conform to a standard remains a good design choice, however. $\endgroup$ Sep 23 '19 at 13:12
  • $\begingroup$ That is the plan - but I'm not sure what kind of apparatus the desktop-size modules use for the spraying. At this point, I'm thinking we'll need to either look into cannibalizing replacement parts for a COTS unit or destining from scratch. $\endgroup$ Sep 24 '19 at 0:10

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