Recent content by johnt447

Sorry if this is in the wrong section but i have a problem, I have no experience with stochastic equations well analytically anyway. The equation i have is the following; \frac{dv}{dt} = - \alpha v+ \lambda F+\eta Where alpha lambda and F are constants, v is a variable (speed in this...

Thanks for the replies and that webstie to check DE is really useful.

Hey Not done this in ages and just can't figure it out, i need to solve the equation; \frac{dv}{dt}=-\alpha v+\lambda F Where alpha,lambda and F are constants. I'm so used to solving differential equations numerically i think I have forgotten how to do it analytically:P My first attempt...

Thanks managed to get it sorted earlier today when i said gradient i wasn't meaning the grad function but like the gradient of how speed is changing with y similar to y/x is a gradient of a line

Thanks for the reply but how do i go around finding a dimensional velocity profile? What do i plug in my x value to in order to get a dimensional velocity? (Also what is the te velocity gradient?) Do you mean use \eta=y\sqrt{\frac{V_{\infty}}{\nu x}} where i would just put in a value of x and...

Blasius equation help :( Hello so I'm working on the blasius solution for incompressible viscous flow. So far I have solved for f' and successfully plotted a graph of flow speed against \eta. So from what I understand this is correct I got a gradient of velocity from 0 to the flow speed. Now i...

There is no reason why a orbit can't be a perfect circle. For this to happen the orbiting body has to be traveling at the right speed so for the right speed to be attained by a natural occurring body like a planet is very unlikely