Recent content by levi415

Thanks, boneh3ad. I actually did derive the above equation from the original where P1+0.5*rho*v1^2 = P2+0.5*rho*v2^2. Since A1v1 = A2v2, I solved for v2 and substituted back into the original. I think my error was... as I was ignoring the sign of my deltaP, I was subtracting from the wrong side...

I'm having problems with what seems like a simple Bernoulli exercise where I can plug in all known variables but not get an answer (using Excel). If I reduce my system down, it would be exactly like a venturi/pipe flow problem except that flow is in the direction of small pipe to large pipe...

Thanks for suggestions; they've prompted me to research areas that I wouldn't have known about. Finally, I've decided to go with the Couette's flow suggestion. I think using Reynold's Lubrication Equation would more closely simulate the hardware I'm using but after some reading, I just don't...

I didn't ask explicitly but is this a proper approach? If not, are there some other equations I can use? I am using the classic friction equation (friction force = coeff of friction x normal force) for the boundary lubrication condition only. Thanks.

I'm working on a project at work that requires some tribology/fluids calculations that I don't know if are applicable to me or not. For this scenario, one of the tests will require me to assume hydrodynamic lubrication where oil is completely separating the 2 surfaces. I have a sliding...