Uploaded August 2019 | Updated September 2026, 2 weeks ago
This is the next elementary flow after uniform flow. We will start with the velocity potential (without derivation), and then compute the Cartesian velocity components. We will then go through a script to compute the flow-field due to a source/sink, and compute the circulation around an arbitrary curve.
==== RELEVANT VIDEOS ====
Incompressible Potential Flow
- youtube.com/watch?v=Zo5XIcX8s2Q
Uniform Flow
- youtube.com/watch?v=jCTTDclJZEk
Uniform + Source/Sink Flow
- youtube.com/watch?v=zIvpN9f9dAA
Vortex Flow
- youtube.com/watch?v=61jvr3rtmLE
Uniform + Vortex Flow
- youtube.com/watch?v=SoMuRp5v16w
==== RELEVANT LINKS ====
Blog post about incompressible potential flow
► joshtheengineer.com/2019/05/05/introduction-to-incompressible-potential-flow
Blog and code for source/sink flow
► joshtheengineer.com/2019/08/25/elementary-flow-source-sink-flow
GitHub: Panel Methods
► github.com/jte0419/Panel_Methods
===== REFERENCES =====
Note: the links are Amazon affiliate links. If you do happen to want to buy the book and use the link below, it helps me out a little.
► Fundamentals of Aerodynamics, Anderson
amzn.to/3emVuXU
► Foundations of Aerodynamics, Kuethe and Chow
amzn.to/2yMg1Vi
► Theory of Wing Sections, Abbott and Doenhoff
amzn.to/2wvZyUt
► Fundamental Mechanics of Fluids, Currie
amzn.to/2RpX2q4
► Elements of Gasdynamics, Liepmann and Roshko
amzn.to/2XrZjoo
This is the next elementary flow after uniform flow. We will start with the velocity potential (without derivation), and then compute the Cartesian velocity components. We will then go through a script to compute the flow-field due to a source/sink, and compute the circulation around an arbitrary curve.
==== RELEVANT VIDEOS ====
Incompressible Potential Flow
- youtube.com/watch?v=Zo5XIcX8s2Q
Uniform Flow
- youtube.com/watch?v=jCTTDclJZEk
Uniform + Source/Sink Flow
- youtube.com/watch?v=zIvpN9f9dAA
Vortex Flow
- youtube.com/watch?v=61jvr3rtmLE
Uniform + Vortex Flow
- youtube.com/watch?v=SoMuRp5v16w
==== RELEVANT LINKS ====
Blog post about incompressible potential flow
► joshtheengineer.com/2019/05/05/introduction-to-incompressible-potential-flow
Blog and code for source/sink flow
► joshtheengineer.com/2019/08/25/elementary-flow-source-sink-flow
GitHub: Panel Methods
► github.com/jte0419/Panel_Methods
===== REFERENCES =====
Note: the links are Amazon affiliate links. If you do happen to want to buy the book and use the link below, it helps me out a little.
► Fundamentals of Aerodynamics, Anderson
amzn.to/3emVuXU
► Foundations of Aerodynamics, Kuethe and Chow
amzn.to/2yMg1Vi
► Theory of Wing Sections, Abbott and Doenhoff
amzn.to/2wvZyUt
► Fundamental Mechanics of Fluids, Currie
amzn.to/2RpX2q4
► Elements of Gasdynamics, Liepmann and Roshko
amzn.to/2XrZjoo
![Explained: NACA 4-Digit GUI Part 8/10 [MATLAB]](https://i.ytimg.com/vi/eW8eEJtwRqA/mqdefault.jpg "Explained: NACA 4-Digit GUI Part 8/10 [MATLAB]
This is the eighth video in my 10-video series on coding a program in MATLAB to compute, display, and save a NACA 4-digit airfoil.
IN THIS VIDEO:
We code the radio button for showing the camber line of the airfoil. We also code the Exit button.
Radio Button Video:
https://goo.gl/E4Owva
Exit Button Video:
https://goo.gl/aarwmW
IN THIS SERIES:
Part 1/10 : https://goo.gl/9UBgbo
Part 2/10 : https://goo.gl/jRRcYJ
Part 3/10 : https://goo.gl/rSVLHo
Part 4/10 : https://goo.gl/HwHB39
Part 5/10 : https://goo.gl/AlDne8
Part 6/10 : https://goo.gl/7n1QP7
Part 7/10 : https://goo.gl/nTGleR
Part 8/10 : https://goo.gl/ez247P
Part 9/10 : https://goo.gl/8mXYcc
Part 10/10: https://goo.gl/ovBlbW")
![Explained: Populate a Listbox [MATLAB]](https://i.ytimg.com/vi/esZVttsTQ9I/mqdefault.jpg "Explained: Populate a Listbox [MATLAB]
This video explains how to select files from a folder and make those file names visible in a listbox.")
![Explained: Continuity Equation for Axisymmetric Conical Flow [Taylor-Maccoll]](https://i.ytimg.com/vi/f79k_ZWtCdc/mqdefault.jpg "Explained: Continuity Equation for Axisymmetric Conical Flow [Taylor-Maccoll]
The continuity (conservation of mass) equation was derived in a previous video. Since the Taylor-Maccoll problem is formulated in spherical coordinates, the conservation equation needs to be recast in terms of spherical coordinates. A few of the assumptions discussed in the previous assumptions video are used to simplify the equation to a useful form for this problem.
The links to relevant videos can be found here.
Continuity Equation
http://www.youtube.com/watch?v=uXPRyYAHvZk
Taylor-Maccoll Assumptions
http://www.youtube.com/watch?v=HIDeIZO0z-8")
![Explained: Sound Suppression Water System [Space Shuttle]](https://i.ytimg.com/vi/fc1WokD1A1c/mqdefault.jpg "Explained: Sound Suppression Water System [Space Shuttle]
The acoustic waves generated from the space shuttle as it lifts off have the potential to damage both the launch structure as well as the shuttle itself. Water is used to absorb some of this energy to ensure a safe launch.
After seeing a different view in a video, it appears that the SSME exhaust hole water nozzles shoot water horizontally across the hole from the sides. The nozzles look like theyre located towards the top of the exhaust hole.
A couple videos that have excellent footage of the structure can be seen below. Note: I would turn down your volume a little before clicking the links because youve probably turned it up to watch my videos.
http://www.youtube.com/watch?v=ezVOSfbKNJ0
http://www.youtube.com/watch?v=dTAjGiZvI9k
This video is pretty spectacular too.
https://www.youtube.com/watch?v=mjrpuG2HOuI")
![Explained: Irrotational Condition [Taylor-Maccoll]](https://i.ytimg.com/vi/g4vnuSHBokU/mqdefault.jpg "Explained: Irrotational Condition [Taylor-Maccoll]
Croccos equation (under our given assumptions) led to an expression regarding the irrotationality of the flow. That is, the flow is free from rotation. Expanding the expression that the curl of the velocity field is zero, another expression relating the velocities flow can be obtained.")
