Can we say roughly that the stagnation pressure is the source of the vorticity? If it is, then can we think of the leading edge vorticity as a conveyor belt that self diffuses due to shear forces?
It is a pressure gradient (change) along the wall that causes vorticity, not just a pressure (like a stagnation pressure). However, you are correct in that the stagnation pressure is a high pressure, and pressure decreases downstream from there. So... it does lead to a pressure change along the wall, which is what produces vorticity. I am not so keen about the conveyor belt analogy, though. Thank you for your comment. Please tell your friends and colleagues about my TH-cam channel where there are more than 460 free videos about the Bible, fluid mechanics, science, math, statistics, air pollution, and other topics. I would greatly appreciate it.
@@johncimbala I thought since vorticity is a rotation, the shear stress it induces around itself transports flow. That since angular momentum is conserved, the vorticity the leading edge creates is ultimately the cause of the adverse pressure gradient, which then propagates through the energy cascade until the K scale.
@@rolandotillit2867 The energy cascade is for turbulent flows. This is simple laminar flow. Also, there is not a vortex at the leading edge - it is just a source of vorticity.
@@rolandotillit2867 Keep in mind that this is graduate level fluid mechanics - much harder and deeper than undergraduate fluids (for which I also have an entire course on TH-cam).
Can we say roughly that the stagnation pressure is the source of the vorticity? If it is, then can we think of the leading edge vorticity as a conveyor belt that self diffuses due to shear forces?
It is a pressure gradient (change) along the wall that causes vorticity, not just a pressure (like a stagnation pressure). However, you are correct in that the stagnation pressure is a high pressure, and pressure decreases downstream from there. So... it does lead to a pressure change along the wall, which is what produces vorticity.
I am not so keen about the conveyor belt analogy, though.
Thank you for your comment. Please tell your friends and colleagues about my TH-cam channel where there are more than 460 free videos about the Bible, fluid mechanics, science, math, statistics, air pollution, and other topics. I would greatly appreciate it.
@@johncimbala I thought since vorticity is a rotation, the shear stress it induces around itself transports flow. That since angular momentum is conserved, the vorticity the leading edge creates is ultimately the cause of the adverse pressure gradient, which then propagates through the energy cascade until the K scale.
@@rolandotillit2867 The energy cascade is for turbulent flows. This is simple laminar flow. Also, there is not a vortex at the leading edge - it is just a source of vorticity.
@@johncimbala My mistake, I'm trying to run before I can walk.
@@rolandotillit2867 Keep in mind that this is graduate level fluid mechanics - much harder and deeper than undergraduate fluids (for which I also have an entire course on TH-cam).