Recent content by renormalize

Is it possible your old tires featured ContiSeal? ContiSeal is a technology developed by Continental designed to seal a damaged tire tread. In case of penetration by foreign objects such as nails, there is no need for immediate roadside tire changes, and holes remain sealed even if the...

I understand your desire. But Physics Forums is not really the platform for a free-wheeling, "back and forth" discussion intended to develop something new (like a homework answer, an experiment, or a piece of hardware like your plotter) from scratch. Instead, we expect you to have already...

Personal theories and the use of AI are explicitly prohibited here on Physics Forums, per its usage rules: https://www.physicsforums.com/threads/physics-forums-global-guidelines.414380/ ChatGPT and AI-generated text Posting AI-generated text without attribution is categorically disallowed and...

You don't need to reinvent everything from scratch. Instead, search for instructional videos like this one: DIY Arduino Based CNC XY Plotter Withouth 3D Printer/Aluminium Rails. Fully Custom Build. This is 100% homemade with minimal tools and items required.

Although LaTeX is still working fine for thread posting, for me it's broken again in a direct message. Inserting LaTeX code into a DM works OK for the first preview but editing and previewing again gives a broken equation that can't be further edited and is even hard to delete. And if I generate...

A hypersphere is a 3-dimensional space (a hypersurface embedded in 4D spacetime) and so it does not include the 4th dimension of time. See, e.g., https://en.wikipedia.org/wiki/3-sphere.

"this acceleration"--what "acceleration"? Please define what you're referring to specifically. "increase overall output"--"overall output" of what quantity? And "increase" relative to what baseline?

OK, good. I think that we are in agreement: we both accept the predictions of standard fluid dynamics (like the Betz limit that bounds the maximum energy that can be extracted by any wind turbine).

Enthalpy is just a particular form of energy that is characteristic of certain configurations of matter. And energy in total is conserved. What's your point?

I am unsure of your point. Have there been "other explanations" proposed to explain velocity increase?

I don't think that's the right interpretation. The flow-speed plots in fig. 6 of my post #26 show lower speeds (blue) everywhere around the building compared to the higher incoming freestream speed (yellow/green). But what you can say is this: if you have a turbine of finite aperture-width...

The energy "released" by the temperature-fall is exactly balanced by the energy required to increase the flow-velocity. Bernoulli's equation for a compressible fluid (like air) can be written ##v^2/2+C_pT=\text{constant}##, where ##C_p## is the specific heat of the fluid. So simple conservation...

Did you search the title in Google Scholar for a free PDF as I suggested? What did you find?

You can look at videos online, like this for example: