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Artificial Force Generation - Fluid Pressure & Buoyancy examples
Topic: Are you optimistic ?
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Yes, but you can only make an approximation as Rainer & I did some time ago - you have to create your own formula that changes the pressure force with depth, or surface area for example, & set a datum somewhere on/in the apparatus so that the changing variables have something to refer too - it's not that easy but is a reasonably accurate approximation - the formula force approach shortfalls are that the force works in one direction unlike real fluids that apply a differential force [with depth representing pressure] on every face of the container or vessel - in this case we had the force pushing down on the bottom of the bucket container & as depth of fluid increased [by dipping a float into it] the pressure at the bottom of the bucket increased accordingly, making the pressure force asymmetric relative to its opposing bucket mechanism on the other side of the wheel - where it got complicated was that you had to have a complimentary buoyancy force also acting on the pivot of the float.

After Rainer built it he was trolling thru the WM2D tutorials & found something very similar to what he'd built in the 'oil rig' tutorial, so that was a good cross check against his approach to a mathematical approximation to fluid pressure & buoyancy - I suggest you start with the same tutorial to learn about the variables you will encounter in trying to duplicate the effects of fluids & gravity.

Here is the relevant thread post to see the force tools used [red] - go to bottom of post & open the sim then click on the buoyancy & pressure forces to see the formulas etc - also included is a picture of the sim in question [one of many].

http://www.besslerwheel.com/forum/viewtopic.php?p=38774#38774

Posted By: Fletcher
In Topic: Are you optimistic ?