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*To*: tesla-at-pupman-dot-com*Subject*: Re: Tesla simulation software project*From*: "boris petkovic" <petkovic7-at-yahoo-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)*Date*: Tue, 06 Jun 2000 12:11:11 -0600*Approved*: twftesla-at-uswest-dot-net*Delivered-To*: fixup-tesla-at-pupman-dot-com-at-fixme

Hi Paul, > > The Program in question should be able to > simoulteneosly solve > > large set of diff. eqs. arising from 1000s of > elements of > > secondary network scheme. > > tsim.c does so, but only for the steady state AC > equations, > so its just a big matrix of complex coefficients. ----- Aaah,steady state.. *maybe good for CW mode operating funs* ..and True TC is ,naturally, pulse excited device. Read:Transients are our concern. ------ > > > (In first place,I'm refering to overall > > inductive and capacitive coupling of every each > turn > > towards others and turns to ground capacities ). > > Turn to ground: yes; turn to immediate neighbour > turns: yes; > longer range turn to turn: no - this is a defect and > I dont > know how significant it is. ----- I asked.It is not so significant and, is usually overcome by the trick of increasing originaly "turn to immediate neighbour turn capacity" by factors between 1 and 3 (depending on coil structure). With coil having more turns the trick works better. ------ > > Graphical presentation of secondary response to > Any > > given excitation waveform for each point (turn) of > > winding in time and space should be also an output > > Some time ago I put together a time domain > simulation of > 100 segments, but it was too much even for a 12 > processor > cluster. ------ And that is what I was affraid of. ----- For now I would be very happy to > successfully model > the steady state AC input impedance ------ In other words you would like to predict Q of structure (in spark unloaded case) or I misinterpret you here? I see another problem here since you mentioned only wire resistance I^2R looses if I remember correct counting for damping effects? No sparking coils are quite a good radiators of EM waves and posess certain radiation resistance which is comparable with wire losses.How do you include this one in your model ? ------ > > There are no significant programming problems in > this project. ----- ? Based on pure circuit theory I can write also a "brutal force method" program which would deal with simoultanes solving of set of thousands of diff. eqs. for points of the winding in time ,using common usual math. methods for solving such set of eqs for given boundary ,innital conditions (I hope I used proper word). The programming problem being adressed to computer to accomplish the task (time for instance:days,months ,years?). Thus ,in that context I see significant programming problem there. ------ The challenge lies in understanding the > physics of the system and in choosing acceptable > approximations in those areas that are beyond our computational > effort. > ----- Indeed. Regards, Boris __________________________________________________ Do You Yahoo!? Yahoo! Photos -- now, 100 FREE prints! http://photos.yahoo-dot-com

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