Talk:Hydraulic jump

message: This discussion could do with a comparison between a hydraulic jump and a shock wave and in so doing, it could expand on the increase in entropy of the flow downstream of the jump. —BenFrantzDale 03:38, 12 October 2005 (UTC)
thread_title:  Comparison with shock wave 

message: The explanation section still needs to be improved.  Also, I find the graph impossible to read;  I can't tell what the labels on the x and y axis are.  The text says there is a circle in the graph.  Maybe it means a curve?  --Coppertwig 18:56, 5 February 2007 (UTC)
thread_title:  explanation could use some fixing up 

message: In the section "Analysis of the hydraulic jump on a liquid surface" under subtitle "Height of the jump" i suspect that using Bernoulli's Principle will lead to the correct equation for the jump height.
I solve the equations manually according to the article and the ratio h1/h0 didn't show.
I am studying fluid dynamics using the book by Streeter,Wylie and Bedford and it show that apply the momentum equation and continuty lead to ratio h1/h0 (same as given in wikipedia) and by solving this equations manually the correct ratio h1/h0 is found.
So what i want to stress is that
1) Momentum equation not bernoulli principle lead to h1/h0 2) the ratio h1/h0 is correct in the article (only the method to arrive to it that is wrong) 3) Actually bernoulli equation (energy equation) is used in the book to find the losses in the jump
Thanks
ShadySaad 17:26, 29 July 2007 (UTC)
thread_title:  I think there is a mistake in the article 

message: The approach flow to the jump is not laminar.  Will the author kindly correct this?
Thanks,
Steve Burges August 10, 2009  —Preceding unsigned comment added by 128.95.45.186 (talk) 00:16, 11 August 2009 (UTC)
thread_title:  Figure 7 Contains an error 

message: The current section on recreational uses of hydraulic jumps focus on natural phenomena. However, if I am understanding the article properly, man-made water parks use hydraulic jumps in their wave pools/tanks. My only experience is at the original Schlitterbahn in New Braunfels, Texas, which has a circular tank into which a large quantity of water is dumped periodically, generating waves for patrons to enjoy. Is this a hydraulic jump? If so, would someone with more knowledge than me please add it to the article? thank you 165.91.64.202 (talk) 04:27, 2 April 2010 (UTC)
thread_title:  possible addition to "recreational" section 

message: This article has been improved since it was tagged as being too technical for most readers to understand back in April of 2008. It seems reasonably understandable now. If nobody objects in the next seven days, I am going to remove the tag. If anyone thinks the tag belongs, please point out specific areas where I can improve the article to make it more understandable. Thanks!  Guy Macon  03:52, 21 February 2011 (UTC)
replies: text: Tag removed. Guymacon (talk) 07:01, 1 March 2011 (UTC)
thread_title:  Too technical for most readers to understand? 

message: I propose to merge Hydraulic jumps in rectangular channels into here. Since that article is mainly an essay written to satisfy some course requirements. And a hydraulic jump in a rectangular channel is the most basic type of hydraulic jump. -- Crowsnest (talk) 14:12, 11 November 2011 (UTC)
thread_title:  Merger from Hydraulic jumps in rectangular channels 

message: "some energy irreversibly lost through turbulence to heat" is impossible and in violation of basic laws of thermodynamics.
The sentence, in fact, says its not really lost but converted from kinetic energy to heat. Just semantics or poor wording, but should be changed, IMO.  — Preceding unsigned comment added by 24.246.168.46 (talk) 03:50, 30 August 2012 (UTC)
thread_title:  Basic physics error here 

message: The first formula is wrong, the delta needs to be removed. Furthermore, the article can be writtem much more clear.  — Preceding unsigned comment added by Arnout.klinkenberg (talk • contribs) 14:05, 4 November 2012 (UTC)
thread_title:  Another basic physics error here 

message: Substituted at 18:34, 29 April 2016 (UTC)
thread_title: Assessment comment

message: The example of water in a kitchen sink was proven last year not to be caused by gravity, see https://www.thechemicalengineer.com/news/circular-hydraulic-jump-not-caused-by-gravity/ --86.12.160.194 (talk) 11:06, 8 April 2019 (UTC)
thread_title:  Kitchen sink image 

message: "Hydraulic jumps" are referenced and linked to in the explanation for the Diablo wind, but the only explanation of the atmospheric version is a simple acknowledgement that they can occur, as well as an example (the target of which, oddly, doesn't use this term).
There's also an allusion to their use by Gliders in Hydraulic_jump#Recreational -- but that page doesn't mention hydraulic waves, but Lee wave, which itself mentions hydraulic jumps, but doesn't link here (nor are Lee Waves linked to from here).
Given the complexity of the main discussion, it would be nice if this section was expanded enough for folks jumping in from how it affects winds across mountain tops, perhaps with a nice diagram?  (It also isn't clear from why this is a sub-section within "Internal wave hydraulic jumps".)
Cross-linking with Lee Waves would also maybe be a good idea?
MrRedwood (talk) 22:06, 23 June 2019 (UTC)
thread_title:  Expand/clarify "Atmospheric hydraulic jumps" 

message: Edits in 2018 by @Rajesh cambridge on "The hydraulic jump in a sink" appear to be promoting a paper that was written by the editor. I'm not enough of an expert in this field to appropriately edit the page, but I think this warrants review by someone more knowledgeable. Jevandezande (talk) 15:38, 21 November 2022 (UTC)
thread_title:  Self-promotion of primary literature