Search found 343 matches

by ganuganu
Mon Sep 10, 2018 3:01 pm
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Straight or bent design anything is ok for me.
by ganuganu
Sun Sep 09, 2018 4:16 am
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Hi Mike

That's interesting. If you could share me the geometry file,it will be easy for me to proceed with simulation.

I would require the following details from your side:
1. Fuel type
2. Injector location and size
3. CAD file in x_t,x_b,step or iges format

Thank you

Regards
Ganesh
by ganuganu
Tue Dec 19, 2017 1:54 pm
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Hi Zono'

Thank you very much.

I am beginner in OpenFOAM, have just done flow past cylinder case :D :D . It will be very interesting to see these kind of simulations in OpenFOAM, eagerly waiting for your results. All the best.

Regards
Ganesh
by ganuganu
Sun Nov 19, 2017 6:46 am
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Got some updates on the code creation, 1. 2d RANS successfully done in MATLAB. STill not yet reached to combustion coding. 2. Created a basic GUI for users to enter values and visualize answers. As of now I have written 1d, 2d inviscid and laminar flow in explicit form. Trying to build code for impl...
by ganuganu
Sat Sep 02, 2017 10:58 am
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Hey Ganesh, how is the project going? Hi Mike Got some updates, In my previous post you can see some colourful images it seems the Lax-Friedrich scheme is too dissipative. So now I have changed the scheme to Maccormack scheme (predictor-Corrector method), the results seems to be reasonable. I have ...
by ganuganu
Mon Jul 03, 2017 6:09 pm
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Hi all, Recently I have been thinking to write a CFD code specifically to simulate pulsejet engines. I started the work two weeks ago and now I have reached a starting point with fully compressible coupled Navier Stokes equation (2D and 3D analysis). Currently tweaking some of the things to match ou...
by ganuganu
Mon May 15, 2017 1:46 pm
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Another just for fun numerical simulation. This was fun creating.
https://youtu.be/VdnT-rudMb8
by ganuganu
Sun Apr 30, 2017 6:17 am
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Another valveless type numerical simulation but this time its single intake chinese type. Its really interesting to see the things happening inside the PJ.

https://youtu.be/FgFmT-_KZfA
by ganuganu
Fri Apr 28, 2017 6:27 pm
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Actually there will be a velocity motion in opposite direction during suction phase from exhaust and intake side but velocity does not show in negative value (i.e positive velocity in reverse direction). In this video the motion of colours represents the movement of mass either in froward or reverse...
by ganuganu
Fri Apr 28, 2017 5:38 pm
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Oh, that one is fun to watch! I would love to see the pressure animation as well. Does it not make sense that the velocity scale should be -300 to +300m/sec? Loses that "hot-cold" spectrum, but freezing it would allow some better interpretation. Will surely post the pressure plots in my next simula...
by ganuganu
Fri Apr 28, 2017 5:11 pm
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Numerical simulation of valveless thermojet in commercially available software.

Combustion chamber pressure: 1.3bar
Peak temp: 2200K
Thrust: 4.2pounds approx 1.95kg

Video: https://youtu.be/1l-MQX_ozCk
by ganuganu
Thu Apr 20, 2017 4:02 pm
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Yes backward inlet type is also possible in CFD. Here is another CFD simulation of a thermojet engine with 4 inlets. Please follow below link to the video,

https://youtu.be/NpSC3MzdiP4
by ganuganu
Thu Apr 20, 2017 9:30 am
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

This engine was made by me like 6 years back. Now I have simulated in CFD. Please follow below link for the video.

https://youtu.be/UXtoUmitbqE
by ganuganu
Wed Apr 19, 2017 3:30 pm
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet-computational fluid dynamics
Replies: 37
Views: 5703

Re: Valveless pulsejet-computational fluid dynamics

Mike Everman wrote:Great, I'll dig it up today. What is your time zone?
My time zone is

India Time Zone
UTC+05:30

Regards
Ganesh