[CFXer]

Hello!

I'm trying to simulate the picture's structure.

At inlet, two inlet are considered whose velocity is around 6 m/s.

And the flow is go through the cuboid core structure.

By using k-epsilon and SST turbulence model, I earned streamline.

In k-e model, its residual comes down below even 1e-7, I thought it might be converged.

But the streamline is so weird. Like picture 3, the streamline of the fluid is circulate at the center of inlet header.

In my opinion, it should collide at center like ficture 1.

I also used SST model, but its tendency was same.

Monitoring residual status, like picture 2 and 4, its residual comes down first and bouncing up and comes down again.

Before its bouncing, its streamline is collide at center, but after bouncing it becomes circulate.

I don't know what's the problem with my simulation. I think it's not well fitted to real physics.

Please anybody help me.