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### The open sourcegrid computingsolution

March 29, 2023, 12:14:35 AM

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### AuthorTopic: I need some help  (Read 4301 times)

#### no_body

• Posts: 1
##### I need some help
« on: May 04, 2008, 09:42:38 PM »

:oops:
hi
thanks alot for the efforts that you spend in this domain

really i need some help in jppf implementation for N-bodies project
as the following
The Antimatter Simulation program calculates the motion of a number of antiprotons moving in a two-dimensional plane. The antiprotons have equal, negative charges
The Antimatter Simulation program maintains each antiproton's position and velocity.
the program calculates the total force on each antiproton (repulsive forces from all other antiprotons plus repulsive forces from the sides of the trap), updates the velocity based on the force, and updates the position based on the velocity and force:

V' = V + F Δt

P' = P + V Δt + 1/2 F Δt2

where F is the vector force on the antiproton, V is the antiproton's vector velocity before the time step, V' is the antiproton's vector velocity after the time step, P is the antiproton's vector position before the time step, P' is the antiproton's vector position after the time step, and Δt is the size of the time step. (These formulas represent the first few terms in the Taylor series expansions for velocity and position as a function of time.)

and thanks amillion :oops:
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