Hydro Differential pressure exchange over unity system.

[see3d]

Hi Dale, that would be great.  I am actually interested in more than one set of inputs from different models, since the measurements from different people will vary in accuracy, and the sim might have an error that does not show up in all configurations.  Having measurements from you as you add layers would be a real bonus.  The more, the merrier. :-)

PS.  I put in the rough measurement into my sim for 8 x 12 size with 0.125 walls and gaps.  It spit out that to get a 1.28 inch stroke it would need about 10 pounds of input and output force to be at an efficient operating point.  It would be a lot different if the pod was not as large as shown.  I have not put the ability to vary the wall and gap sizes independently in the pod area or exit areas yet.  I will do that soon -- as if anything I ever do can be considered "soon"... LOL.  Here is a picture of my sim output.  I am sure your setup will be somewhat different, but it is a data point for consideration.

Thanks,
Dennis

[see3d]

Red-Sunset said


The Pivot lies in the ratio between the outer layer and the pod area. A pod area as big as the outer layer surface would be unity, if we ignore losses. As you make the pod smaller than the outer layer, the outer to pod area ratio will become your advantage over unity.
 
1. The pod is a cylinder. By pod area , do we mean the area of one end of that cylinder?


2. As it would be physically impossible to have a pod with an area as big as the surface area of the top of the outer riser, and still fit the pod inside he riser , can we assume that this is a theoretical question?


3. So making the pod area smaller than the area of the top of the outer riser, is advantageous in terms of gaining OU. Is there, therefore an "ideal" pod to outer ratio,  Or can we enlarge this ratio to an absurd extent, and still gain? Can Red_Sunset, or anyone please answer these questions?

Hi Neptune,

If I understand your question, it is possible to have an exit head area that is larger or smaller than the pod area or pod head area without doing anything absurd (I just put that into my sim both ways).  If the whole last layer "air" area is used, then it is even an easier ratio to achieve.  The geometry is not constrained.  As far as the exact definition of terms by Red-Sunset, he will have to confirm that.

[parisd]

Seed3,
Your Zed drawing is interesting and a bit different to what I imagined. what is the dark blue, gray, light blue and what is the orange rectangle at bottom?

[Red_Sunset]

Neptune,
1. The pod is a cylinder. By pod area , do we mean the area of one end of that cylinder?
** By “area” we mean “lift area”, on which pressure forces act to generate lift

2. As it would be physically impossible to have a pod with an area as big as the surface area of the top of the outer riser, and still fit the pod inside he riser , can we assume that this is a theoretical question?
**  Quite an interesting interpretation, it definitely does mean that he pod must fit inside the outer riser otherwise the outer riser would become the inner riser. This also means that the Travis buoyancy device is by default over-unity.

3. So making the pod area smaller than the area of the top of the outer riser, is advantageous in terms of gaining OU. Is there, therefore an "ideal" pod to outer ratio,  Or can we enlarge this ratio to an absurd extent, and still gain? Can Red_Sunset, or anyone please answer these questions?
** There are quite a few other design considerations that come into play that need to be looked at, changing the lift area ration affects the lift force. Smaller area, more OU but lower force. You will need to run this through xls to get a better feel. I have not done that

Regards, Michel

[see3d]

Seed3,
Your Zed drawing is interesting and a bit different to what I imagined. what is the dark blue, gray, light blue and what is the orange rectangle at bottom?

parsid, you must have missed my posted link to my public ZED folder with a PDF description of the ZED drawings used in my sim.  Here it is again.  This is where I will post my updates to the PDF and animations.  These are about to be updated, as the current ones are wrong in the details, but it will give you an idea of what it all means.

https://www.dropbox.com/sh/6vdnbk72ywyckns/zB501rT78P