SIMPLE Solver Being Unstable in a Laminar Flow over a Cylinder | OpenFOAM
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Пікірлер: 4
@jojodasjojo6 ай бұрын
isn't this the reason golf balls have dimpels?
@Codeynamics
6 ай бұрын
Yes you are right
@pro100vald6 ай бұрын
Your flow is really close to the walls. This will never be stable. Shrink down the ball a few times and then you`ll see nice laminar trail.
@Codeynamics
6 ай бұрын
In fact the instability is due to the Reynolds number of the flow. The same geometry would be stable in a slightly lower Reynolds number. But yeah. as you said the walls could be farther. But my main motive was to achieve instability. so it actually helps.
Пікірлер: 4
isn't this the reason golf balls have dimpels?
@Codeynamics
6 ай бұрын
Yes you are right
Your flow is really close to the walls. This will never be stable. Shrink down the ball a few times and then you`ll see nice laminar trail.
@Codeynamics
6 ай бұрын
In fact the instability is due to the Reynolds number of the flow. The same geometry would be stable in a slightly lower Reynolds number. But yeah. as you said the walls could be farther. But my main motive was to achieve instability. so it actually helps.