How much does fluid temperature affect the flow resistance loss of a fluid?
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For a 2000-meter long pipe, if the temperature of the fluid drops by 5°C, does its frictional loss generally change significantly?
As the temperature of a fluid decreases, its viscosity increases, its density also increases slightly, and the pressure drop increases a bit as well. https://bbs.hcbbs.com/thread-1764891-1-1.html
In engineering calculations, the pressure drop caused by temperature changes can be ignored, right?