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rotating Domain, interpase problem

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Old   October 20, 2005, 12:20
Default rotating Domain, interpase problem
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carlos
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Hi guys, Im simulating the rotor of a wind-power-plant. My last simulations all terminated with errors, because there is coming a strong vortex in the whole body. This vortex is in the wrong direction of the normal wake-vortex by wind-power-plants. In the beginning of the Solver-run, the vortex is very small but after ten iterations he is rising very fast. It is a three-blade-rotor, so Im simulating only 120 degrees in a rotating Domain.The symmetrie-planes are connected with an interphase (Periodic,rotational,GGI).The round Plane which connects the symmetrie-planes ist a free-slip-Wall. It seems as if the symmetrie Planes wont work right, but I made a lot of simulations like this an they work. So if anybody can help I will be very greateful.

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Old   October 20, 2005, 18:43
Default Re: rotating Domain, interpase problem
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Glenn Horrocks
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Hi,

The problem is probably in your setup. Are you using periodic boundaries at the ends of the 120 degree segment? What are your entry and exit conditions?

Glenn Horrocks
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Old   October 21, 2005, 04:25
Default Re: rotating Domain, interpase problem
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Carlos
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The two sidewalls with the 120 degree angle to each other are connected as Interphaseeriodic connection method: GGI periodicy: rotational

The entry is an inlet Frame type: stationary normal speed: 10 m/s

The exit is an outlet (I also tried opening) with relative pressure 0 Pa

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Old   October 23, 2005, 18:17
Default Re: rotating Domain, interpase problem
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Glenn Horrocks
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Hi,

What do you mean by "The round Plane which connects the symmetrie-planes ist a free-slip-Wall"? Do you mean the outer radius of the domain is a free-slip wall?

Glenn Horrocks
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