Investigation of water and saline solution drops evaporation on a solid substrate

Investigation of water and saline solution drops evaporation on a solid substrate

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Experimental investigation water and saline solution drops evaporation on a solid substrate made of anodized aluminum is presented in the paper.Parameters characterizing drop profile have been obtained (contact angle, contact Dog Kibble diameter, height).The specific evaporation rate has been calculated from obtained values.It was found that water and saline solution drops with concentration up to 9.1% evaporate in the pinning mode.

However, with increasing the salt concentration in the solution up to 16.7% spreading VESTS SUIT mode was observed.Two stages of drop evaporation depending on change of the evaporation rate have been separated.