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Showing results 1 to 5 of 5 Search took 0.00 seconds. Search: Posts Made By: FMDenaro

Forum: Main CFD Forum September 23, 2015, 09:08

Replies: 13 At what Reynolds number, can viscoisty of water be ignored in an open channle flow. Views: 1,958 Posted By FMDenaro the Re number can be written as (U/L) * L^2/ni,... the Re number can be written as (U/L) * L^2/ni, U/L is homogeneous to the gradient of the velocity. Re-> inf can be due to ni->0 for finite U/L, or U/L-> inf for finite value of ni.

Forum: Main CFD Forum September 23, 2015, 06:45

Replies: 13 At what Reynolds number, can viscoisty of water be ignored in an open channle flow. Views: 1,958 Posted By FMDenaro be carefull, in confined flow is somehow... be carefull, in confined flow is somehow arbitrary a subdivision in internal (viscous) and external (inviscid) flow conditions...It strongly depends on what you are looking for...

Forum: Main CFD Forum September 23, 2015, 04:35

Replies: 13 At what Reynolds number, can viscoisty of water be ignored in an open channle flow. Views: 1,958 Posted By FMDenaro No, for flow over a wall, the boundary layer... No, for flow over a wall, the boundary layer thickness diminuishes as the viscosity diminuishes but it still exist. Using the inviscid hypothesis (Euler equation) leads to unphysical stress analysis...

Forum: Main CFD Forum September 23, 2015, 04:25

Replies: 13 At what Reynolds number, can viscoisty of water be ignored in an open channle flow. Views: 1,958 Posted By FMDenaro It is well known from the old Prandtl theory that... It is well known from the old Prandtl theory that very low viscous flows can be treated as inviscid everywhere except from a small bounday layer near to a wall where viscous forces are always...

Forum: Main CFD Forum September 23, 2015, 03:21

Replies: 13 At what Reynolds number, can viscoisty of water be ignored in an open channle flow. Views: 1,958 Posted By FMDenaro Using the Euler equations (zero viscosity... Using the Euler equations (zero viscosity assumption) in channel flows is actually a very bad assumption...what do you want to simulate?

Showing results 1 to 5 of 5

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