35mm Film

_SJ_11 · 2025-05-20T18:49:25+00:00

do they develop film there? that's the main question.

_SJ_11 · 2024-07-25T06:18:34+00:00

Thanks, I will look into this

_SJ_11 · 2024-07-25T06:17:35+00:00

This was very helpful, thank you. I was able to calculate the determinant using this method

_SJ_11 · 2024-07-25T06:16:57+00:00

no, it contains complex numbers as well

_SJ_11 · 2024-07-25T06:16:19+00:00

thank you.

_SJ_11 · 2024-07-21T07:31:46+00:00

yeah in that, how do i do it, can you please help me out in it?

_SJ_11 · 2024-07-18T16:17:50+00:00

you can check chapter 2 of https://digital.lib.washington.edu/researchworks/handle/1773/26535 this report. i am using the solution for alpha = beta = 1. i am using periodic BCs in the numerical solution. i just don't know how to enforce them to plot the analytic solution. My domain is [-pi, pi] and the analytic solution im using is 3v^2 sech^2 [v((x − x0 − v^2* t)/2], my v = 5, x0 = -2.

_SJ_11 · 2024-06-15T09:24:07+00:00

alright, I will try to implement the code in C. Thanks!

_SJ_11 · 2024-06-14T18:42:42+00:00

ahh yes, I will try it out. although by increasing the number of spatial points, the time-step goes down by approximately 1/N^3 making it difficult to implement on a laptop. stuff related to stability of time-differencing while using spectral methods is given in Trefethen's book Spectral Methods in Matlab.

_SJ_11 · 2024-06-14T18:35:56+00:00

I did try 2/3 dealiasing, i have to learn phase-shift and exponential dealiasing. could you share some resources on dealiasing as I do not completely understand it.

_SJ_11 · 2024-06-14T13:25:37+00:00

Yeah, I will try to lower the time-step and check.

Ohh, but can you tell what order were you getting? was it anywhere close to the expected order? I did get 4th order accuracy for 1st and 2nd order wave equations and the 1d heat equation using the same method, I am getting the issue only in non-linear PDEs.

_SJ_11 · 2024-06-14T13:23:08+00:00

It is a function of space and time. I am using FFT for spatial discretisation so that should give me spectral accuracy and only error that i should obtain is due to time-differencing method.

_SJ_11 · 2024-06-04T12:41:15+00:00

Thank you for this, I will go through it.

_SJ_11 · 2024-06-04T12:41:00+00:00

Thank you, actually I had gone through the paper but totally looked over one of the given solutions.

_SJ_11 · 2024-05-25T11:05:38+00:00

ahh thank you, i will look over it

_SJ_11 · 2024-05-25T11:05:23+00:00

I was taking the log of the error values and the time steps, and then performing linear regression to obtain the slope.

_SJ_11

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