Recent content by nrobidoux

I was aware of friction... but not of force 2. Thank you.

The toolstring has several angled surfaces that eventually reach 3.125". Might be something like: 45 deg from 0 - 2" diameter 1' - 2" 60 deg from 2" - 2.75" diameter 25' - 2.75" 90 deg 2.75" - 2" 2" - 2" (goes here) 90 deg 2" - 3.125" 20' - 3.125" Steps down 3.125" - 2.75" 5' - 2.75" 45 deg...

It's a potential business thing hence the secrecy. But another thread fished more info out of me. Pics weren't enough to get the principle across, LoL. Well I think they were trying to go past that and see if the actual use case would provide any more info... no. I'd like to avoid creating a...

Essentially. Just take what's on the bench in the above picture of the work area and add on similar diameter items until 60' is reached. In the other picture above... what is most true for B? Where pink is the pushing area. That's really what I'm trying to figure out. "Because it's fluids"...

Have to work with that is available. :) The question is depicted in the new attachment below. What is more representative of reality for the posing area for Cylinder B?

It's not a picture of the system but of the idea being explored. The reality is currently this part is made of rubber and can be used to assist the movement of the tool string. That is not its primary purpose... and rubber wears down fast. Also the rubber part is not designed to minimize wear...

The rubber is crushed also... but it has the give in it to survive. If it wasn't clear on my original post that was my first inclination: solid part like the original. Then my mind got involved and asked is it easier on the material if a smaller thickness was used and to accommodate that...

This part exists. Rubber works great a few times. Then you need a new part. It also has the hole centered. Not offset. That's really where the wear comes from. Plus we need an insert to narrow down the ID of the rubber part to fit on the shaft properly. Be nice to just print-n-go so to speak...

Provide greater surface area to push the tool string downhole. "More effective" means using less water to achieve the same speed. So "perform identically" means the ideas for Cylinder B do nothing.

This is a project I gave myself at work, really just to improve things. It didn't come from above but from myself. However I went the route of biological and computer sciences not engineering. Without going into excruciating detail essentially a plastic "tube" will be going into an oil well...

Because my little work project involves fluids I thought this the best topic to post under. I took the route of biological sciences and computer science. This area is out of my league at the moment I'm not sure the amount of time that would be required to get the material applicable to this...

I always seem to get into "big" projects these days and need to whip out some math that has a lot of cobwebs. I'm not too worried about injuring myself... but I don't want to inadvertently have something break over a vehicle bed / trailer. I think most of the system components are good... I...

Thanks Greg. Apparently the problem was the wording in the original problem. I received full credit for my answer... well almost. Apparently I needed some widget nodes in my graph and not handle c with any other code besides max-flow used on that graph.

Homework Statement You've periodically helped the medical consulting firm Doctors Without Weekends on various hospital scheduling issues, and they've just come to you with a new problem. For each of the next n days, the hospital has determined the number of doctors they want on hand; thus, on...

I do have the textbook. The lecture and the book are greek to me. So I'll go over them a few times, watch other Youtube videos about the topic, etc. When I look at the homework, with few exceptions, I'm like, "Huh?!?" And then I start pounding the square peg in the round hole. Given enough time...