Recent content by genergy

"Reynolds Effect" is what I think of when I think of all that happens around the "Reynolds Number" ( https://en.wikipedia.org/wiki/Reynolds_number ) which seems to be a weird quantity when it is supposed to have different effects at different velocities. How can you have a constant quantity when...

https://www.cfd-online.com/Forums/main/11682-magazine.html Seems like there is not a lot online but there are a LOT of software products! http://www.ticktutor.com/top-10-computational-fluid-dynamics-cfd-softwares/ It is interesting to see what are described as "Fluid Inventions"...

The resistance is not only when an object is falling it is ALSO WHEN IT IS FLOATING UP... negative floating...look at how fast a 20 percent buoyant sphere SHOULD be moving...with one quarter g upward acceleration ("-0.25) g.

How do you engineer an optimum velocity when any increase in velocity means significantly more parasitic energy loss?

Velocity is a 6X Energy Drain. The Faster an object moves in water the more energy resistance: the energy drain is 6 times the V.

Look at a simple 2D CFD and you see turbulence, friction, and energy in a new way. 3D is even more impressive.

When using Computational Fluid Dynamic (CFD) modeling you are able to see incredible complexity in water energy transfer. The Thermodynamic energy transfer occurs at much higher velocity so it does not apply in most of the cases I am looking at. What are the other parasitic energy transfers that...

In a compressed air space there is a suspended mass with 10 cubic meters volume. The pressure vessel is 20 atm. The suspended mass is suspended 100 meters over water that is kept at bay by the air pressure inside the vessel. The moment the mass is released its potential energy converts to...

Of course, it is even more disconcerting because you know the more agitated that you get the more oxygen you burn.

Ouch! I had no idea of Stoke's Law limitation! Can you please direct me to some specific formulas?

I have been doing some other work on the more advanced equations. I was hoping to get a "Ballpark" estimate of the acceleration. Do you think that the Reynolds Number will be out of line or is there some other reason that I cannot use this as a First Estimate?

I used the calculation off of this page at Hyper Physics; http://hyperphysics.phy-astr.gsu.edu/hbase/lindrg.html I plugged the variables into Excel and ran the formula. Now that it is in Excel, (theoretically if I did not make any mistakes copying) I can adjust the size of the radius and...

I used 39 seconds. Does that seem good?

This was the last attempt that I made before posting the thread. I think that I am applying what you said but I am not quite sure. Does this method accomplish the Energy Density method of calculating Buoyant energy? Buoyant Force Calculator Gravity ("g") Force...

Here is another way that I tried where I copied the formula from the web; Net Gravitational Acceleration g' -0.315072129 m/s2 1-p'/p -0.032128514 m/s2 Object Density p 996 kg/m3 Fluid Density...