A few years ago Hackaday featured a laminar project ... in parallel inside a 4″ PVC pipe. The water input is a 3/4″ garden hose adapter, perpendicular to the flow of the output nozzle.

Now, instead of using water in your pipes, replace it with honey. Assuming you could provide a large enough pressure, even for fast flow the motion would remain laminar. If you do not wish to do this ...

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In the rear section of the wing, the design maintains smooth airflow (laminar flow) by creating a favorable pressure gradient, similar to natural laminar flow. This approach combines different ...