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-   -   problems in synthetic jet flow simulation (http://www.cfd-online.com/Forums/fluent/109987-problems-synthetic-jet-flow-simulation.html)

jackxu December 2, 2012 10:12

problems in synthetic jet flow simulation
 
Hi,
I'm working on the simulation of synthetic jet flow.

my model and boundary conditions:
http://p13.freep.cn/p.aspx?u=v20_p13...38405705_0.jpg

mesh details:
http://p13.freep.cn/p.aspx?u=v20_p13...46179994_0.jpg


In this case I used Spalart-Allmaras viscous model and kept other items unchanged.

contours of velocity :
http://p13.freep.cn/p.aspx?u=v20_p13...48472869_0.jpg
current_time = 0.25s(25 periods)

http://p13.freep.cn/p.aspx?u=v20_p13...51031610_0.jpg
current_time = 0.2525s(25.25 periods)

Comparing the two pictures above, I find that the jet flow is almost sucked in during the next period. Has I got the synthetic jet flow or just a failed result?:confused:
I'm confused about whether I designed a proper model. And do I have to set other parameters besides the viscous model? (I'm a starter in CFD)
Has anybody ever got experiences in synthetic jet flow simulation? Please give me some suggestions.
Thanks for any replies!

djgdskmkcmm@gmail.com


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