Please, I need good advice. Let me to show my problem closer. You can see (enclosed), how my initial magnetic field from static analysis looks. It is non-continous, because the current source is present in it. I can get the magnetic intensity Hx, Hy values only in nodes. I have regular mesh now, but I need to have irregular mesh in the future, because variety core shapes. I can create whatever text file with Hx Hy. I must say, I am not used to program in Scheme, I do little bit in C and C++. I would do executacle files, which could have as parameters x, y coordinates and to get Hx, Hy interpolation. I would deal with field intensity non-continuities. Can such executable be called from Scheme? Is this way of C executable right? Should I start this? Thanks.
Michal -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Friday, March 27, 2009 4:19 PM To: Michal Martinů Subject: Re: FIELD No, that will not work. Non constantField strength has to be defined depending on the coordinate vector v3. Ernst > Ernst, have you meant > > (define (my_Hmagx v3) > 0.643873E+03 0.250000E+02 0.500000E+01 0.000000E+00 > -0.259792E-13 0.600000E+02 0.500000E+01 0.000000E+00 > -0.159389E+03 0.320000E+02 0.500000E+01 0.000000E+00 > ) > (define (my_Hmagy v3) > 0.312191E+03 0.310000E+02 0.500000E+01 0.000000E+00 > 0.288839E+03 0.320000E+02 0.500000E+01 0.000000E+00 > 0.268434E+03 0.330000E+02 0.500000E+01 0.000000E+00 > ) > (define (my_Eelez v3) > 0.100000E-02 0.310000E+02 0.500000E+01 0.000000E+00 > 0.100000E-02 0.320000E+02 0.500000E+01 0.000000E+00 > 0.100000E-02 0.330000E+02 0.500000E+01 0.000000E+00 > ) > (init-fields) > (meep-fields-initialize-field fields Hx my_Hmagx) > (meep-fields-initialize-field fields Hy my_Hmagy) > (meep-fields-initialize-field fields Ez my_Eelez) > > ??? > It has no problem to run, but the field is not initiated. > Have a nice weekend. > > Michal > -----Original Message----- > From: [email protected] [mailto:[email protected]] > > Sent: Thursday, March 26, 2009 8:09 AM > To: Michal Martinù > Subject: Re: FIELD > > Michal, > > I used this feature to implement earths magnetic field in a calculation. > Its assumed constant over the model. > In your case the my_magx/y/z functions have to define the field > values using the vetcor v3 values. > > Ernst > ---------------------------------------------------- > > ; earth magnetic field function > (define scalem 1e-6) ; scale factor for H absolute field strengths > adaption > ; >~ 1e-7 > (define mu_0 1.2566e-6) > (define Bh 20e-6) ;Tesla horizontal > (define Bv 44e-6) ; vertical (Europe mid lat.) > (define Hh (/ Bh mu_0)) ; A/m > (define Hv (/ Bv mu_0)) > (set! Hh (* Hh scalem)) > (set! Hv (* Hv scalem)) > > (define (my_magx v3) > 0 ; here v3 depending values have to appear > ) > > (define (my_magy v3) > Hv ; here v3 depending values have to appear > ) > (define (my_magz v3) > Hh ; here v3 depending values have to appear > ) > > > (init-fields) > (meep-fields-initialize-field fields Hx my_magx) > (meep-fields-initialize-field fields Hy my_magy) > (meep-fields-initialize-field fields Hz my_magz) > > > > > __________ Informace od NOD32 3964 (20090326) __________ > > Tato zprava byla proverena antivirovym systemem NOD32. > http://www.nod32.cz > > > __________ Informace od NOD32 3969 (20090327) __________ Tato zprava byla proverena antivirovym systemem NOD32. http://www.nod32.cz
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