Euler works - Runge-Rutta not - Why? Options  Email this topic  Watch this topic  Print this topic » Normal Threaded

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OchkovVF		#1 Posted : 31 December 2023 06:02:28(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 338 Was thanked: 26 time(s) in 25 post(s)		Help please Rocket-s-Euler.sm (88kb) downloaded 7 time(s).
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Jean Giraud		#2 Posted : 31 December 2023 10:24:42(UTC)
Rank: Guest Groups: Registered Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)		EK45 was Deified by Mathematica Working code included. Jean Rocket-s-Euler.sm (123kb) downloaded 5 time(s).
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OchkovVF		#3 Posted : 31 December 2023 20:49:44(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 338 Was thanked: 26 time(s) in 25 post(s)		Thanks. I have corrected myself Rocket-s-Euler-RK.sm (88kb) downloaded 0 time(s). New question Why this not works Rocket-s-Euler-RK-full.sm (89kb) downloaded 3 time(s).
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StvMath		#4 Posted : 31 December 2023 22:44:31(UTC)
Rank: Advanced Member Groups: Registered Joined: 26/07/2022(UTC) Posts: 35 Location: UK Was thanked: 22 time(s) in 19 post(s)		Your RK does work! Your Euler doesn't because you have defined the acceleration term to have two input variables, but only call it with one in the Euler routine! Rocket-s-Euler-RK-full.sm (90kb) downloaded 13 time(s). Edited by user 31 December 2023 23:18:57(UTC)  | Reason: Not specified
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1 user thanked StvMath for this useful post.		on 31/12/2023(UTC)
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OchkovVF		#5 Posted : 31 December 2023 23:02:35(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 338 Was thanked: 26 time(s) in 25 post(s)		Originally Posted by: StvMath Your RK does work! Your Euler doesn't because you have defined the acceleration term to have two input variables, but only call it with one in the Euler routine! Tanks! Send me please the corrected file.
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StvMath		#6 Posted : 31 December 2023 23:22:06(UTC)
Rank: Advanced Member Groups: Registered Joined: 26/07/2022(UTC) Posts: 35 Location: UK Was thanked: 22 time(s) in 19 post(s)		Originally Posted by: OchkovVF Originally Posted by: StvMath Your RK does work! Your Euler doesn't because you have defined the acceleration term to have two input variables, but only call it with one in the Euler routine! Tanks! Send me please the corrected file. I've now added the corrected file to my earlier reply.
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1 user thanked StvMath for this useful post.		on 31/12/2023(UTC)
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