Hello detonation "you look great"
Moderator: Mike Everman
-
- Posts: 346
- Joined: Tue Dec 14, 2010 7:31 am
- Antipspambot question: 125
- Location: india
- Contact:
Hello detonation "you look great"
Atlast completed my Msc in aerospace propulsion course writing my final thesis gonna submit it in a month.
Hello everyone after nearly six months iam posting a new topic and finally i got some time to spend here in the forum. I would like to discuss about the integration of detonation engines into conventional turbojet or turbofan engine. The discussion is whether placing the detonation engine either outside the CC(In the bypass duct) or to replace the current combustor by detonation combustor. Which is better. Anyone interested.
Hello everyone after nearly six months iam posting a new topic and finally i got some time to spend here in the forum. I would like to discuss about the integration of detonation engines into conventional turbojet or turbofan engine. The discussion is whether placing the detonation engine either outside the CC(In the bypass duct) or to replace the current combustor by detonation combustor. Which is better. Anyone interested.
-
- Posts: 346
- Joined: Tue Dec 14, 2010 7:31 am
- Antipspambot question: 125
- Location: india
- Contact:
Re: Hello detonation "you look great"
single detonation cycle meshed in ICEM and simulated in ansys fluent. Probably tomorrow i will complete the simulation Looks like the cj velocity matches my simulation.
- Attachments
-
- deto.png (3.83 KiB) Viewed 16180 times
-
- Posts: 346
- Joined: Tue Dec 14, 2010 7:31 am
- Antipspambot question: 125
- Location: india
- Contact:
Re: Hello detonation "you look great"
The formation of detonation front..
The first pic is mach num followed by temp, density and static pressure
The first pic is mach num followed by temp, density and static pressure
-
- Posts: 346
- Joined: Tue Dec 14, 2010 7:31 am
- Antipspambot question: 125
- Location: india
- Contact:
Re: Hello detonation "you look great"
18000 iterations over reached mach 2.33 so the wave is accelerating as expected and started to form detonation wave. Updates will be given further.
-
- Posts: 346
- Joined: Tue Dec 14, 2010 7:31 am
- Antipspambot question: 125
- Location: india
- Contact:
Re: Hello detonation "you look great"
Thank you, yes iam planning to make. In order to get good results from prototype i will first make several tries with simulation then we will proceed to do the prototype. I nearly got the result in simulation 36200 iterations over and now the wave is accelerating ti C-J detonation wave velocity. Can you help me with the prototype???? if yes i will be very happy because iam not much experienced in fabrication stuff and electronics...metiz wrote:Pretty cool. Any plans for a prototype?
-
- Posts: 346
- Joined: Tue Dec 14, 2010 7:31 am
- Antipspambot question: 125
- Location: india
- Contact:
Re: Hello detonation "you look great"
The point at which the detonation wave is created can be seen clearly in this pic. Exactly at 40 microseconds.... The calculated CJ velocity was about 1779m/s the simulation results shows the wave velocity as 1760m/s.
-
- Posts: 346
- Joined: Tue Dec 14, 2010 7:31 am
- Antipspambot question: 125
- Location: india
- Contact:
Re: Hello detonation "you look great"
Results with higher order solution methods and higher order chemical reaction mechanism. Calculated cj velocity was about 1805m/s and the numerical results is about 1820m/s.
The pics are the pressure, temp and mach num.
The pics are the pressure, temp and mach num.
Re: Hello detonation "you look great"
which software do you use?
-
- Posts: 346
- Joined: Tue Dec 14, 2010 7:31 am
- Antipspambot question: 125
- Location: india
- Contact:
Re: Hello detonation "you look great"
Ansys fluent 14.0daab wrote:which software do you use?
-
- Posts: 346
- Joined: Tue Dec 14, 2010 7:31 am
- Antipspambot question: 125
- Location: india
- Contact:
Re: Hello detonation "you look great"
Used 75 step reaction mechanism and 19 species. Done some simulations for varying ambient condition(indirectly varying the altitude). The pics are for 1atm and 0.8atm ambient condition.
-
- Posts: 346
- Joined: Tue Dec 14, 2010 7:31 am
- Antipspambot question: 125
- Location: india
- Contact:
Re: Hello detonation "you look great"
Currently iam checking the effects of using con di nozzle at the exit, implementing diffuser and various other parameters. I will update here soon...
Re: Hello detonation "you look great"
Interesting work, does the software allow different tube geometry. Maybe something like this: