I'm trying to understand some fluids concepts that don't seem to be covered in very much detail in introductory fluid mechanics textbook. Specifically, these topics include pumps (gear pumps mainly) and shear-thickening fluid behavior in pipe flows and in said pumps. Any ideas on good...
In work that I've been doing, we've come across an interesting problem. In a manufacturing process, a highly viscous, non-Newtonian fluid goes down a vertical chute and then gets pushed horizontally out the bottom by some rotating screws. Sometimes, the fluid gets pushed out the bottom, but...
I'm trying to learn more about the physics of guitars. I followed through the derivation of the transverse wave equation and that makes sense, but it seems like several of the simplifying assumptions might not apply. There are a lot of approximations with small angles and small slopes. I...
I have a signal that has several distinct peaks. I need to characterize these peaks by their max y value, their x location, and their width. I thought FWHM would be a good measure. However, these peaks are just from a data logger. They are pretty Gaussian curves. Furthermore, the curve...
Hi,
I have a situation where I have a set of n data points and want to specify k values that best approximate the values in the set. (it's an image-color reduction problem)
MATLAB has a magic algorithm using something called minimum-variance quantization that will do this (although I...
I'd like to learn more about acoustic analysis of musical instruments, but I have no idea where to even start. I've taken some acoustics courses and some fluid dynamics courses as well as structural vibrations. What I'd like to do is model an instrument and then have a numerically predicted...
@I like Serena
I tried your suggestion. It works for dL/dt, but it still gives me 0 for dL/dx, where I'm supposed to be getting 1. Any other suggestions?
I know that Mathcad only takes partial derivatives. I set up my equations using this general format:
L:= x(t)
Then, I take the derivative of L with respect to t and get the following:
dL/dt -> d/dt*x(t)
However, when I take the derivative of L with respect to x, I should get 1, but...
I have two matricies.
A is a 3x3x10. C is a 3x10. (A is a changing 3x3 rotation matrix and C is a changing velocity vector)
I want to multiply each 3x3 part of A with the respective 3x1 part of C.
I tried A.*C, but I get the following error: Error using ==> times Number of array...
We have a sensor in the lab that measures two quantities and uses two different sampling rates. All four of these vectors are saved into the same text file. How can I load this into MATLAB when it is non-rectangular?
Thanks for your help.
Our lab just got these fancy new accelerometers that I'm trying to figure out. They are triaxial, but are not yet calibrated. As I was looking into how to calibrate them, I realized that, for a given axis, I would get a different voltage reading depending on whether the axis was oriented...
I'm an ME grad student and I'm in an upper-level dynamics class. It has become apparent that I'm going to want to use a symbolic solver. I'm familiar with MATLAB, but I hear that this is not MATLAB's forte. I also have MathCad, Maple, and Mathematica available to me. Which is the best for...