hydraulic stirling

[fullofhotair]

Beta or gamma design with flywheel above. Instead of connecting rods you use hydraulic lines. The timing could be controlled by a two part flywheel. One part stationary ,the other part the turning flywheel. Valve holes would line up to open and close fluid flow. On the power stroke ,the top of the power piston would doubles as a hydraulic pump.This would turn a motor in the flywheel. As the flywheel turned holes 90 degrees off would line up, send the fluid down to a hydraulic piston that is connected to the the displacer.It would all work just like the connecting rods, but using a noncompressable fluid. The advantages are obvious.No bent rods.The useable part of the stirling engine could be move twisted or stretched in any design permitted by the lenght of the hydraulic lines.It could be moved around a room like a skill saw with an electrical cord.

[fullofhotair]

I have done some homework on basic hydraulics.There is a whole new vocabulary to learn. A hydraulic motor is an actuator.A hydraulic piston is called the cylinder.There are open and closed systems. I believe the advantages might be greater than I thought.
2-1. Basic Systems
The advantages of hydraulic systems over other methods of power transmission are-
Simpler design. In most cases, a few pre-engineered components will replace complicated mechanical linkages.
Flexibility. Hydraulic components can be located with considerable flexibility. Pipes and hoses instead of mechanical elements virtually eliminate location problems.
Smoothness. Hydraulic systems are smooth and quiet in operation. Vibration is kept to a minimum.
Control. Control of a wide range of speed and forces is easily possible.
Cost. High efficiency with minimum friction loss keeps the cost of a power transmission at a minimum.
Overload protection. Automatic valves guard the system against a breakdown from overloading.
The main disadvantage of a hydraulic system is maintaining the precision parts when they are exposed to bad climates and dirty atmospheres. Protection against rust, corrosion, dirt, oil deterioration, and other adverse environmental conditions is very important. The following paragraphs discuss several basic hydraulic systems.

Arent these all pluses we would like to have in a stirling engine.The flywheel could be turned horizontal and put right on top of the engine. The flywheel could be a saw blade or grinding wheel and be used like a pneumatic tool .The engine could be in one room and you could be in another room with the power head.

[Ian S C]

I think you might find its a bit more complicated than you think, hydraulics seem simple on a diagram, maybe you could use a free piston engine to drive a hydraulic pump, but you are going to have more friction in seals, and tight pistons in the pump. Sorry can't see any advantage, but good for throwing in another idea. Ian S C

[zohaa3492]

Great library - would it be possible to use it to solve navier stokes equations and transient cases in fluid dynamics?