if you have a few spare minutes, lets learn about laminar flow I think there are a lot of inferences we can make based on this information. I'll start 1. the lower the speed (of air for our purposes) equates to a greater affinity for laminar flow [SUP][5[/SUP] is the mean velocity of the object relative to the fluid (SI units: m/s) is a characteristic linear dimension, (travelled length of the fluid; hydraulic diameter when dealing with river systems) (m) is the dynamic viscosity of the fluid (PaÂ·s or NÂ·s/mÂ² or kg/(mÂ·s)) is the kinematic viscosity () (mÂ²/s) is the density of the fluid (kg/mÂ³). so v is what I'm talking about, and since v is in the numerator a lower v will always equal a lower equation (Reynolds number) see 5:50 in the first video 2. A smaller diameter vessel will equal a greater affinity for laminar flow. This is L. The linear dimension the air passes over the object. Also in the numerator, so also the smaller the number the smaller the equation (Reynolds number) 3. (8:15 in the first video) the primary distribution of turbulent flow occurs between +30*-+60* and -30*- -60* relative to the direction of flow. A good place to not work or place objects. It seems (to me) that perpendicular to the flow (90*) would be the place to do your work. (coming in from the side of the work) that's my take on it anyway.