Note:
This conversation took place for the last 3 days till today after the first set of converstions.
All my friend's quarries are in blue...
from snp gupta snp.gupta@gmail.com
date Sat, Aug 6, 2011 at 5:58 AM
Dear
Thank you for comments.
Please go through the attached file of equations, and please ask me any doubts / questions...
Best regards
=snp
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To snp.gupta <snp.gupta@gmail.com>
date Sat, Aug 6, 2011 at 1:40 PMsubject
I have had a look on the file you sent to me, and it seems very confusing because of the notation and the concepts, which are not written in a usual way, and does not look very formal from a mathematical point of view. However, it seems you introduce a lot of constraints on the system, so that the problem does not depend on initial values only!
Anyway, you should contact experts on N-body simulations, I am not.
Best regards,
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from snp gupta snp.gupta@gmail.com
date Sat, Aug 6, 2011 at 7:23 PM
Dear
Thank you once again for your fast reply. You always seem to understand the problem and various present day mathematical procedures. And you always doubt on your self. what i sent were the actual equations used in excel worksheet of Dynamic Universe model, as it is. They will work for you if you copy them to a sheet as written and prepare the sheet without mistakes. I want to be as accurate as possible to you.
Some equations give intermediate results, which will be used in next set of equations. Our task is to calculate x,y,z values of velocities, positions and accelerations for every point mass in the system for every time step. There will be so many equations and naturally so many variables.
Please don't imagine that there are some constraints. There aren't any.
Here some columns were designated as mass values in KG, some are initial distances in meters with respect to some reference frame of Cartesian coordinate axes etc. Every thing is expressed and explained in that booklet, i sent you. What else explanation you need? I gave the actual mathematics set in Chapter 3, which you already saw and gave your comments.
For your kind information as I told you there are no additional constraints except initial values and time steps. You look for your self. Rows are with numbers, columns are with a,b,c, d's ( alphabets).
I thought you know how to use excel.....You did not seem to understand excel notations probably.
Please try again and tell me....
Best regards
=snp
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to snp gupta <snp.gupta@gmail.com>
date Sun, Aug 7, 2011 at 11:22 AM
Dear Snp,
As I told you, I do not work on N-body simulations, so I think you should contact people working on this. I do not have enough time to check your entire model in excel. You should test simple models as N=3 and compare it with well known results.
Regards,
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from snp gupta snp.gupta@gmail.com
date Sun, Aug 7, 2011 at 1:29 PM
Dear
I already tested the Dynamic Universe Model with n= 2 and n=3, do you want me to show you...
Dear Diego, I want say one more thing, as I did not follow any body to work out these things in Dynamic Universe Model, I am getting rejected from every place, nobody want to say a good word, or they dont want to test this. Every body say it is not his work or specialization. In fact nobody worked in this line earlier.
Warm Regards
=snp
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