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Showing results 1 to 9 of 9 Search took 0.00 seconds. Search: Posts Made By: DanFrederiksen

Forum: Main CFD Forum September 3, 2010, 10:36

Replies: 18 Programming own CFD, noone supports vortex rings? Views: 2,394 Posted By DanFrederiksen would it kill you to try? you know you want to :... would it kill you to try? you know you want to : ) also a couple of other interesting test cases. the golf ball. if the sim can't demonstrate the dramatic reduction in drag from the dimpels then...

Forum: Main CFD Forum September 2, 2010, 14:45

Replies: 18 Programming own CFD, noone supports vortex rings? Views: 2,394 Posted By DanFrederiksen I suspected you meant something contextually... I suspected you meant something contextually specific rather than the more general meaning of vortex ring. these are vortex rings: http://www.youtube.com/watch?v=XJk8ijAUCiI and I was just wondering...

Forum: Main CFD Forum September 2, 2010, 12:11

Replies: 18 Programming own CFD, noone supports vortex rings? Views: 2,394 Posted By DanFrederiksen you keep saying inviscid. are you saying a smoke... you keep saying inviscid. are you saying a smoke ring somehow manages to remove all viscosity or that the phenomenon can only be replicated in simulation if viscosity is set to zero? you may not live...

Forum: Main CFD Forum September 2, 2010, 11:13

Replies: 18 Programming own CFD, noone supports vortex rings? Views: 2,394 Posted By DanFrederiksen well perhaps I am a bit pushy when rightly... well perhaps I am a bit pushy when rightly impatient but I did read and comprehend this sentence of yours "While I have never performed a simulation of a vortex ring". isn't Biot-Savart an...

Forum: Main CFD Forum September 2, 2010, 10:39

Replies: 18 Programming own CFD, noone supports vortex rings? Views: 2,394 Posted By DanFrederiksen how disappointing. I'm just getting into CFD... how disappointing. I'm just getting into CFD and you claim to be very established and have software of your own yet you conclude that it's my responsibility to test this archetypal phenomenon. are...

Forum: Main CFD Forum September 1, 2010, 19:01

Replies: 18 Programming own CFD, noone supports vortex rings? Views: 2,394 Posted By DanFrederiksen perhaps you should try it? perhaps you should try it?

Forum: Main CFD Forum September 1, 2010, 14:28

Replies: 18 Programming own CFD, noone supports vortex rings? Views: 2,394 Posted By DanFrederiksen ok. can your own software do it? have you ever... ok. can your own software do it? have you ever seen a vortex ring in simulation that wasn't specially designed to simulate vortex rings? do you understand how a vortex ring can travel stably?

Forum: Main CFD Forum September 1, 2010, 11:28

Replies: 18 Programming own CFD, noone supports vortex rings? Views: 2,394 Posted By DanFrederiksen no I meant as a macroscopic phenomenon. can for... no I meant as a macroscopic phenomenon. can for instance Fluent produce a stabil 'smoke' ring if starting conditions are right? with no cheating or special case bullshit

Forum: Main CFD Forum September 1, 2010, 10:56

Replies: 18 Programming own CFD, noone supports vortex rings? Views: 2,394 Posted By DanFrederiksen Programming own CFD, noone supports vortex rings? I plan to implement a CFD for some car aerodynamics experiments if I can and I was wondering what the right physics model is and I thought about smoke rings. is it really true that the existing...

Showing results 1 to 9 of 9

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