Problems for Stepped Spillways Modelling

Najam_us_Saqib_Fraz · May 11, 2020, 12:39

Thank you for the reply.Actually my model height is 1m,and width is 300 cm.My model have 13 steps with first 5 steps having different heights.For this I chosed 10 mm mesh size.I have a smallest step of height 20 mm.What size would you recommend and what model should I use to get it right.I am trying to draw the pressure profiles on different steps.

elyasmin · May 11, 2020, 18:41

Quote:

Originally Posted by Najam_us_Saqib_Fraz

Thank you for the reply.Actually my model height is 1m,and width is 300 cm.My model have 13 steps with first 5 steps having different heights.For this I chosed 10 mm mesh size.I have a smallest step of height 20 mm.What size would you recommend and what model should I use to get it right.I am trying to draw the pressure profiles on different steps.

Check if you can see the steps properly after favoring the solid.

Najam_us_Saqib_Fraz · May 12, 2020, 02:55

Yes..I favored the solid.There are first few steps (1 or 2 ) whose shape looks a bit distorted.I am trying to reduce the mesh size but as I reduce the mesh size the flow starts to jump over the steps. In fact it must skim,but with the finer mesh it starts to jump and do not follow the flow pattern.

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May 11, 2020, 12:39		#21
Najam_us_Saqib_Fraz New Member Najam us Saqib Join Date: May 2020 Location: Islamabad Pakistan Posts: 5 Rep Power: 6	Thank you for the reply.Actually my model height is 1m,and width is 300 cm.My model have 13 steps with first 5 steps having different heights.For this I chosed 10 mm mesh size.I have a smallest step of height 20 mm.What size would you recommend and what model should I use to get it right.I am trying to draw the pressure profiles on different steps.

May 12, 2020, 02:55		#23
Najam_us_Saqib_Fraz New Member Najam us Saqib Join Date: May 2020 Location: Islamabad Pakistan Posts: 5 Rep Power: 6	Yes..I favored the solid.There are first few steps (1 or 2 ) whose shape looks a bit distorted.I am trying to reduce the mesh size but as I reduce the mesh size the flow starts to jump over the steps. In fact it must skim,but with the finer mesh it starts to jump and do not follow the flow pattern.