Recent content by Tanner Ross

Err, we have never discussed gage or absolute pressure in my fluid dynamics class thus far. It is asking what the pressure is as it blows in the wind back into the tunnel from the outside.

err, I just tried it again and I must have punched something wrong in my calculator when I squared 100m/s. Got a value of P2 = 83.8kPa

Homework Statement A wind tunnel is designed to draw in air from the atmosphere and produce a velocity of 100m/s in the test section. THe fan is located downstream of the test section. What pressure is to be expected in the test section if the atmospheric temperature and pressure are -20C...

Sigh, right. I knew there was supposed to be a sqroot in there.. Haven't done magnitude in a while.

All I did was what was talked about earlier. Using the points (0,0,0) and (1,-2,0) I plugged them into the vector field b then took the magnitude for the speed: V(1,-2,0) = {(1)(-2) - 2(-2)^2 - 0} = -10 speed = |-10 m/s| = 10m/s But I am guessing I am missing something to do with a sqroot

Well there was a part b which gave a different vector field b) V = xy i - 2y^(2)j + tyzk m/s answer is: 0, 8.246 m/s My answers are 0 and 10m/s

Well just did that and checked one of my answers, and its wrong so I am still missing something.

So then just plugging in the points gives me the velocity, taking the absolute value would give me the speed I am guessing? My memory of year to year physics classes goes away quickly so I don't remember much from my first year courses.

Homework Statement Determine the speed of a fluid particle at the origin and at a point (1,-2,0) for each of the following velocity fields when t = 2s. All distances are in meters and t is in seconds. V = (x+2)i + xtj - zk m/s Homework Equations V x dr = 0 dV/dt = u(dV/dx) + v(dV/dy) +...