[bs] Finite Difference Time Domain by Professor Sina Ataollah Khorasani

Picture of  Professor  Sina Ataollah Khorasani  (taken from google+)

From: Andri Husein <andri84@yahoo.com>

To: Sina Ataollah Khorasani

Sent: Thursday, 30 August 2012, 5:06

Subject: Finite Difference Time Domain in Matlab

Dear Professor S. Khorasani

I do hope Professor S. Khorasani is fine.

Allow me to introduce myself. I am Andri Husein, graduate student at University of Sebelas Maret, Surakarta, Indonesia.

I am currently studying for the FDTD simulation of metamaterials. I get your FDTD code from the site, but have not managed to run it. Here is the output from the matlab command history. 

%%%%%%%%%%%%%% Matlab Command History %%%%%%%%%%%

(C) Copyright 2005

Sharif University of Technology

School of Electrical Engineering

All Rights Reserved

Computing the bandstructure via FDTD

Direction GX ??? Error using ==> fprintf

Invalid file identifier. Use fopen to generate a valid file identifier.

Error in ==> SaveComponent at 17

fprintf(Output,'T: %.10f dt: %.10f dT: %.10f Total Steps: %d\n',T,dt,dT,nT);

Error in ==> SaveField at 23

SaveComponent(fname,Data,nT,dTT,dt,T)

Error in ==> RunFDTD at 46

SaveField(USave)

Error in ==> ScanPath at 24

RunFDTD

Error in ==> BandStructure at 54

ScanPath(kxrng,kyrng,fname);

Error in ==> Go at 22

BandStructure

Error in ==> emfdtd at 23

Go

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

I really hope Professor S. Khorasani pleased to inform our fault location? Thank you very much.

Regards,

Andri Sofyan Husein

*****

Re: Finite Difference Time Domain in Matlab

FROM: Sina Ataollah Khorasani

TO: Andri Husein

Message flagged Thursday, 30 August 2012, 12:33

1) Please download the latest version from here: EmFDTD

2) Study README.TXT before running. I guess you have not.

3) You must make an 'Output' folder first inside the directory where your MATLAB code has been unzipped. Otherwise, the MATLAB code will generate the error message you are asking. For instance, let's say your code is unzipped here:

C:\EmFDTD\

Then you have to create the following folder before running the program:

C:\EmFDTD\Output\

Good luck

****

Re: Finite Difference Time Domain in Matlab 

FROM: Andri Husein

TO: Sina Ataollah Khorasani

Dear Professor Sina Ataollah Khorasani,

I finally have managed to run the fdtd-program from Professor Sina Ataollah Khorasani and get some impressive picture in attach. Thanks a lot :).

I am also interested to understand the physical meaning of fdtd program that Professor  Sina Ataollah Khorasani made. If Professor Sina Ataollah Khorasani permit, may I ask journals using this computational method ?  

Thanks and Regards,

Andri Sofyan Husein