特斯拉无叶涡轮泵制作方法

1、特斯拉无叶涡轮泵制作方法Building a Tesla Turbine from harddrive plattersPlease note that I am not a Physicist or a machinist (yet) I have been interested in Nikola Tesla for some time, and I was looking for a project to gain some experience in the machine shop My job is to provide Leeture Demonstrations， so my

2、goal was to produce a teaching tool rather than an efficient engineFor background material, Wikipedia has several good review articles about ikola Tesla, the Tesla Turbine, the BoundaryLayer Effect, and Reynolds dumber.DisksAt first I tried using CDs because of their large surface areas, but they di

3、dn't hold up too well under the milling machine. I also had a stack of platters from old and defective hard drives, but I didn，t know if the smaller diameter disks would work as wel1One problem I ran into is that some newer hard drives use ceramic disks instead of metaL They're still coated

4、with metal, but they，re thinner and a couple platters shattered when I tried to machine them:My original plan for the center hole pat tern had small holes(for threaded rods and washers for spacers), as well as large holes (for air vents)The second set of platters had radial arcs cut in them such tha

5、t the inside edge of the radial cutout is close to the outside diameter of the spacers that I removed from the hard drive assembliesThe hard drive platters were stacked and clamped to a rot ary table between two sheets of scrap aluminium but the top disk (above picture) still took some extra damage

6、The rest of the platters look much bet ter though (see the complete rotor assembly below)SpacersI decided to belazy and use the spacers that were betweenthe plattersin the original hard drive assemblies ratherthan machine my own.This increased distance (roughly 05instead of 012") may lead to tu

7、rblent flow rather thanlaminar flow but will be close enough for this project.ShaftWith the turbine platters and spacers complete, I turned a shaft from round stock The inside diameter of both the platters and spacers is 98 which is the diameter of the thick section in the middle I left the whole le

8、ngth at 98 until I knew the width of the chamber and the inside diameter of the bearings The wide part is " long which fits inside the 2 thick acrylic chamberCollarsThe collars are essentially wider versions of the platter spacers The inside diameter has to fit on the shaft, but they can，t be t

9、oo tall so they block the ventilation holes in the disks Also, they can't be too wide or they will take up too much horizontal space inside the chamber I made each collar 3 which is enough space for a #10-32 set screw to hold them (and everything else) in placeBearingsThe bearings and brass fitt

10、ings were the only new parts in this project (everything else was reused from scrap materials) These metric bearings were pulled from a box of old and used bearings and I had to machine the shaft and side panels to fit them.Rotor AssemblyThere are eleven platters and ten spacers held together by the

11、 two collars The hard drive platters are hard to keep clean so I wore gloves when assembling the rotor There should be a fair amount of pressure between the two collars or the disks will rotate about the shaft instead of with it.ChamberThe main chamber is an acrylic block machined down to " x &

12、quot;x 2". The square block was mounted in a 4-jaw lathe chuck, drilled, and then bored out The final cutout is about .07 larger than the disks The air inlet is taped for a 1/4 pipe thread and all of the other holes are taped for 1/4一20 sockethead cap screws.Side PanelsThe side panels are 47&qu

13、ot; thick acrylic and have untaped 25 holes for alignment to the main chamber. The center hole is . 6" with a 280 deep counterbore for the bearing The bearings are metric so I used the 4jaw chuck and boring bar again to try for a press fit into the side pane 1. However, I made the counterbore a

14、 few thousandths too big which allows the bearing to :rotate in the side paneLMany other Tesla Turbines that I've seen online have larger ventilation holes in the sides I was going to cut the same radial pattern from the disks in the side panels, but I decided that wasn" t necessary after a trial run with just the 6 hole.AssemblyThe two brass