1. The problem statement, all variables and given/known data The initial separation of the pistons is 2cm. They are submerged in water at room temperature. I need to calculate the work required to have two pistons touch, find the volumetric flux of the water as a function of time, and the force at a given time 2. Relevant equations 3. The attempt at a solution [tex]F= \int p(r,z) 2 \pi r dr [/tex] (from 0 to R) F=(3/2) (pi u *V)/(H^3) * [z^2*R^2+R^4/2-R^4/4+Po*R^2/2] This is as far as I got with it. Is my solution for force correct? I'm not sure of the integration I need to do for work and flux from here. How do I find the force as a function of time? I tried googling for lectures on axisymmetric squeezing flow, but I only found research papers on the topic that did not help me in solving this problem. What other keywords should I be searching for?