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Initial Guess steady vs unsteady simulations

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Old   July 1, 2016, 17:43
Default Initial Guess steady vs unsteady simulations
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Hello,

Does the initial guess has an influence on solution only in the case of unsteady simulations ?

Thank you for your answer.
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Old   July 2, 2016, 06:49
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Some fluid flows can bifurcate - this means different initial conditions can lead to different final steady state conditions. So the initial condition can flip from one final condition to another.

An example is a 2D planar venturi which is slightly too big an angle to keep the flow attached, so you get a separation. The flow will stick to either the top or bottom wall due to the Coanda effect. But which one it sticks to depends on the initial condition.
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