"œRoll the historical film - imagine shimmering memory clip here "“"œ
Yes I have followed your work for a long time. I remember most of those pics. I have planned to copy some of your work but can't try your new endeavor. Baby steps first.
Unfortunately, I am dyslexic so I mostly look at the pictures and didn't read all of the text. Remember, I'm a guy "¦."I don't need to look at the directions." "¦or do I?
I don't remember getting all of the feedback on how your stuff worked.
"œThe difference is that the change in direction is sinusoidal. The laminar flow's timing isn't."
It depends on where you are and when. Where you were, the reef itself didn't thin out the body of water. It was moving much like it was all in a box on casters, shifting back and forth. (ignore the surface wave in the box)
At other paces, the reef causes the water to up-well and push over the reef structure causing a longer, more sinusoidal flow "¦even though it can be laminar. What you are trying to do is ambitious and requires a lot of power as you have already calculated.
I am looking at something like the 12 by 12 idea that you talked about. "¦understanding the down sides.
Going back to the full blown idea"¦
When I am brain storming, as you know, I think outside the box. (way outside!) As I was taught, bad ideas can be improved or fixed "¦.or can spur better ideas. So when it comes to ideas, I believe in quantity not quality. That is why I will just utter whatever comes to my mine, no matter how stupid it sounds.
I guess everyone that is reading this thread has mentally explored an external, open topped box above the tank with a baffle going back and forth. This external box has been done before. Often pushing and then pulling something with the same force saves energy over two separate units pushing at a different work output as when it is pulling or just reacting to the work of the other unit.
If the baffle and the sides of a rectangular vessel was taller than the resting waterline, the waves would not wash over. You would not need seals, just a close fit, not touching the walls. Seals would assuredly wear out in no time. At least that is what I have read. On the other hand, water blow by wouldn't be that great as long as the waves didn't over flow the baffle or sides. The water that goes upward in a wave would, of course come back down and act as a capacitor so energy would not be lost.
The vessel would not have to be made of glass so you wouldn't have to worry about accumulated stress fractures and sudden catastrophic failure of the display tank. A problem would go back to piping the water to the two ends of the tank with minimal friction, also addressed earlier.
The narrow boxes at either end is the only thing that I have been able to think of over the years. Not being a fluids guy, I wonder if you would need the internal baffles. If the pressure inside the box exceeds the resistants' of the straw wall, won't the out flow be pretty close to equal without the baffles?
Now the main moving drive baffle (say, going left and right) would extend down into the vestal at a right angle. There would be a long moment or torque length produced by the long baffle so there would be a lot of stress on the slide mechanism that the drive baffle would be attached to. A geared motor could move the baffle left and right like a piston, piston rod and crank shaft in a car, only in reverse.
Again, I am probably not explaining anything that we have not all thought of before but it might cause someone to come up with a better idea.
