Recent content by Trenthan

Hey guys/ girls and thanks in advance Okay this may seem like the dumbest question on the planet. But i figure i better ask before i waste the lecture's time of booking a consult. Whats the derivative of y(x) = e^{5ix} where 5i is a complex number both the partial and standard...

All good Using the Crank-Nicholson approach, and than applying Newtons law, which involves taking the jacobian etc and solving for the residue to be zero works. Thanks for your time and help lanedance

we have been instructed to use Crank-Nicholson for some stupid reason in our design brief. Im looking up other methods iterative techniques such as Newtons method which may be applied within the method... Any suggestions or thoughts...?

unfortunately its not, we are modelling a pendulum which is lubricated well** :(

Homework Statement I haven't done this for several years and have forgotten. Kicking myself now over it since it looks like something so simple but i cannot figure it out... I need to break this second order ODE into a system of first order ODE's in matrix form to use within a crank...

Working in two dimensions at the moment. Using the potential field consisting of a sink. source, and the circle theorem to model circular obstacles within it. Taking the derivative of the potential field results in the velocities. dw/dz = u + i*v I than use Eulers method to determine...

Hey Guys/Girls and thanks in advance Not quite sure this is in the correct forum since its not a homework question, more private study and curiosity lolz! Im trying to evaluate the curvature along the streamline within a hydrodynamic potential field (fluid flow). I have no issue calculating...

Hey guys, this isn't a course work question more independent study to improve something I'm working on for my course, to increase computation time. It may be in the wrong thread but the others state to post independent study in the homework section so its here. Placed it in maths since its...

Hey guys, girls stupid question Whats the actual formula for elongation of a tie rod \delta = \frac{FL_{O}}{EA} or \delta = \frac{FL}{EA} When searching the net, I've found some use the tie rod length "L" Others use the original length of the tie rod LO (In my lecture notes the...

Potential Flow Field around an Ellipse** Ey guys Just wondering if anyone knows of any theory's that can be used to create a potential field around an ellipse in non uniform flow? I would have used a full Rankine body, but that requires uniform flow so it won't work in non uniform flow...

btw TY IssacNewton ! huge help yep that's it, how would i simply it down to atan(x/(y^2)^(1/2))/(2*(y^2)^(1/2)) - x/(2*(x^2 + y^2)) ? The tan bit i can easily do but the last term... (Only asking since to complete the remainder which i use this to create my complex velocity...

how would i transform that into x/(2*(x^2 + y^2)) since that's what I am looking for :S well where would i start in order to do that, mat-lab was right matches no.10 off the site u posted :)

bit of playing around got me to there, with abit more i got down to this, (see attached) the first arc tan looks good, when combined with the other arc tan which u found, (i just ignored that bit for now) i get the "atan(x/(y^2)^(1/2))/(2*(y^2)^(1/2)) " from matlab its the 2nd term...

x=y\tan(\theta) havent done these for quite some time going through the year 12 textbook atvm hoping we covered it than. If not uni notes next Quick question we take the diff of above with respect to theta ot y? ive made the substitution etc and now have this ugly thing in terms of...

make the substitution x=y\tan(\theta) this will simplify it... Wouldn't it be x = y/tan(theta) ? If not where did that relationship come from?