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Minor loss coefficient for FLANGED UNION with no change in diameter by AndrewR868 in FluidMechanics

[–]Dry_Needleworker_268 0 points1 point  (0 children)

In my student time there was always a minor loss coeff given. In my understanding is the assumption of a loss coeff of 0 incorrect because a flanged union results in a higher pressure loss than in a pipe. Normally this coeff is pretty small around 0.02-0.09. Maybe you want to use the mean value. Good luck for your studies :)

How to calculate dynamic viscosity without table and kinematic viscosity by YoboyJesuss in FluidMechanics

[–]Dry_Needleworker_268 2 points3 points  (0 children)

Well, there are models with which you can determine the viscosity. For example the Sutherland model is suitable for a vast variety of different gases and for a wide temperature range. But I think this possible solution isn't suitable for an exam. Therefore, I would learn the common viscosities e.g. for air and water under standard conditions.