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One observation from hours on this site already, a lot of the links no longer work, I would say half or more, and that's a terrible thing to lose that knowledge. Maybe something can be done about this going forward. Regards, Dallara Hi Dallara. You can check out my collection of PJ materials at htt...

It seems to me that you need to increase the resolution and remove the end caps. Otherwise, it turns out that you have a reflection where it shouldn't be.
In any case, compared to serious CAEs like Ansys, it's all a toy, nonsense.

What is the trick to getting geometry into the wave simulator? I've tried filled geometry and outlined, in jpg and png, gray and black. I just get a blue field. I just draw everything I want in any CAD, save it as .png, then use, for example, photoshop's "magic eraser" do delete background. https:/...

Can you please add the elliptical rotated 90deg? See attachments. You can create anything you want here: https://wavesimulator.starfree.app And, of course, play with different shapes manipulating the waves. This is not the only wave simulator. Google showed me more than one online version, and I be...

Just cone end is also cool. But parabola is still the best if to force someway a detonation center to be in it's focus. I'll think about how to achieve this using some geometric manipulations, something like in the attached .pdf🤔 What a pity that you have to do work at work! (by the way, if you need...

We've also theorized around here what the geometry might be like if that end of the duct came to a conical point, changing the sex of the acoustic wave that hits it (but not the pressure wave, I imagine). When I say acoustic wave, I mean maybe wrongly the velocity wave, and the pressure wave I like...

Hi Tufty. Yes, this is an age-old conflict of interests between theory and practice. I realized this, first working as a worker in factories, and then as a design engineer, when a technologist or a worker beat me with my own pack of drawings when the product is not assembled, because I did not provi...

Guys, what do you think about palabolic reflectors for a dead-end parts of Enics-Type I've posted and another PJ's ? See the attachments and links: https://www.youtube.com/watch?v=BEjLEHTWaFk https://www.geogebra.org/m/QEcTJmfE Will it be enough just to make a backwall this way or for more efficienc...

Hi, A good few years ago I had a very talented research assistant who I had to let go due to lack of funding to keep her on. She was Gang Li and went to work for Ricardo on the south coast of England. Before she left I had her construct a 2-D model of a Schmidt-tube (using axial coordinates). The m...

Hello Everyone, there will be a log of my and my comrades' attemts to build a valveless engines. My name is Alexander, I am a postgraduate student of turbine engineering. Maybe the pulsejet will be a subject of my Ph.D. FIrst of all: I collect a huge collection of documets/articles/photos/textbooks/...