Hello Krishna Nivedita, As somebody who has spent a lot of time rewriting MEEP for in-house developments, I assure you that MEEP is indeed FDTD. Did you use a 3D cell? Did you set up PML layers? Could you show your configuration?
Best wishes, Alex Friman On Tue, Sep 8, 2020, 08:29 Krishna Nivedita G < niveditakrishn...@iisertvm.ac.in> wrote: > Hi, > > I had installed the meep FDTD package a few months before, for an > internship project, I am currently working on. First of all, I should > confess that I am very new to FDTD simulations. > I wanted to make a simulation of a dipole source kept in ice which has a > varying refractive index. > > As a first step, I simply kept the source (continuous wave_ freq=1 ) in > middle of my cell in vacuum and tried plotting intensity as a function of > distance from the source. When I fitted it with 1/r^2 it was not fitting > (where r is the x distance from the source). > > when freq= 3 or less : the fit with 1/r^2 was not good... > when freq=4 or 5: it was fitting with 1/r^2 almost... > when freq=more than 7: it was much steeper than the fit.. > > > I averaged total power outputted over each time step hdf5 files- till some > 300 runs- to get intensity values? I am I finding intensity in a wrong way? > > Should'nt the intensity be decreasing as 1/r^2 for any frequency? What am > I doing wrong here ? Please help. > > Thanks, > -- > Krishna Nivedita G, > Int.BS-MS, > School of Physics, > IISER Thiruvananthapuram. > _______________________________________________ > meep-discuss mailing list > meep-discuss@ab-initio.mit.edu > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
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