/diy/ - Do It Yourself

>>601095
This stuff is one reason we are have the problems we do with STEM jobs now a days.
>"If the math don't prove it must be wrong."
It is like we made math and now expect the physics to follow our designs. Physics does not care what the math says, this is why tweaking still works so well because real world events will keep happening regardless what we write down on paper. This is not to dismiss the power math has as a tool, but at some point you got to go out a do things as we never seem to get every variable perfect. As you and others have painfully demonstrated, be neglecting things like the ratio of air friction to flow speed and how gas flow self optimizes to the path of least resistance.

Take this case, it is true the first particles will not be optimally aligned thus costing more energy. But this is a gas we are talking about, once the internal pressure rises the particles will realign as a new flow pattern forms dramatically reducing such losses. Meanwhile the speed the particles pass through filter is lower thanks to the larger filtration surface area. This lower speed means that the losses to air friction are dramatically reduced. It more then make up for it if the unit is turned on for more then a few seconds at a time. This is why many modern filters have mini triangles, the cost of miss alinement is very low compared to the rewards of a larger surface area.