Bubbles??

[Albrecht Von Hesse]

Can't say I've seen this before, but I've noticed since running GWX 2 that, now and then, when I torpedo a ship there is a steady stream of bubbles exiting the torpedoed area.

Looks pretty kewl. :D

[Jimbuna]

Could have something to do with the Enhanced Damage Effects :hmm:

[Albrecht Von Hesse]

Could have something to do with the Enhanced Damage Effects :hmm:

::grins::

I do keep an eye (and ear) out for all the nice little thing's you guys have added yanno. ;)

[Kpt. Lehmann]

Could have something to do with the Enhanced Damage Effects :hmm:

::grins::

I do keep an eye (and ear) out for all the nice little thing's you guys have added yanno. ;)

Well, its good to know that you aren't bothered by Jimbuna's confirmation of your comment.;)

[Wolfehunter]

:doh: doh... I must have missed that nice detail... I have to see that:p

[Jimbuna]

Just don't go crashing into any of them whales. Once annoyed it is rumoured they turn on the nrearest merchant and bite a huge chunk out of the bow :yep:
Trouble is.....you don't get the renown :nope:

[Contact]

Hi lads :rock: if the talk goes about bubbles I noticed a long time ago that electro torpedoes still releases bubbles, those can be seen underwater and on the surfaces it's invisible. I think it has to be hardcoded and unable to fix right ?

[TheDarkWraith]

Hi lads :rock: if the talk goes about bubbles I noticed a long time ago that electro torpedoes still releases bubbles, those can be seen underwater and on the surfaces it's invisible. I think it has to be hardcoded and unable to fix right ?

not hard coded. Can be removed as it's a particlegenerator creating those bubbles. Can even be replaced with something else if wanted.

[Turm]

not hard coded. Can be removed as it's a particlegenerator creating those bubbles. Can even be replaced with something else if wanted.

After all the troubles you had with the excessive explosion debris, that comment immediately made me think of torpedoes generating a trail of endless sailors as they speed towards their target :rotfl:

I know this post in no way helps towards the discussion, but anyway... :oops:

[Gezur(Arbeit)]

yes that is one thing that annoys me with SH2 and 3....the screws of ships or electirc torpedos create bubles....maybe it looks nice, but its not realistic. :down:

[bgeorgalas]

yes that is one thing that annoys me with SH2 and 3....the screws of ships or electirc torpedos create bubles....maybe it looks nice, but its not realistic. :down:

Are we sure that it is not realistic? Couldn't that bubbles be because of cavitation?

please see here because my english do not permit me to give a thorough explanation:

http://en.wikipedia.org/wiki/Cavitation

[Gezur(Arbeit)]

well as it says, the pressure must drop till the water becomes steam....the propeller must turn at very high speed and the angles of the propeller must be high enough to cause the water to become steam..... and it also says...if cavitation happens the screws get damaged by it, and can break....

maybe this can happen to electric eels but im not sure if their prop turns fast enough.

[Philipp_Thomsen]

People Should remember this quote from 688I Hunter/Killer

"conn, sonar: cavitating"

[kenijaru]

usually naval engineers are taught to avoid surfaces that might cavitate. :yep:

but if you look at all the propellers in SH3... they "cavitate", from merchants to battleships and from the IID to a Falke.

[Gezur(Arbeit)]

http://upload.wikimedia.org/wikipedia/commons/6/66/Cavitating-prop.jpg

Look at this picture...you can see its turning very fast...

From the german Wikipedia:

"Kavitation verursacht überdies Vibrationen (http://de.wikipedia.org/wiki/Vibration), die den Antrieb (http://de.wikipedia.org/wiki/Antrieb) eines Bootes oder Schiffes beschädigen, ja sogar zerstören können." (http://de.wikipedia.org/wiki/Verdr%C3%A4nger_und_Gleiter)

Translation should be like this : "Cavitation also leads to vibrations, that damage the engine of a ship or boat, or even destroy it."

Also, most propellers are created not to cause cavitation.

[Philipp_Thomsen]

Cavitation is what makes the noise, thats why you are able to listen torpedos on the hydrophone, while the uboat propellers (if below 100 rpm) you can't. Thats all about the propeller turning speed. Too fast and it will cavitate, then you can hear.

[Gezur(Arbeit)]

Sure but the Problem is that any ship at any speed shows bubbles....older sub screws caused cavitation, but the sub just had to dive a bit deeper and he could go much faster because the pressure is higher and cavitation is not possible...water-temperature also affects cavitation. so when they detected subs then they heared the engines mostly, not the screws... or the captain went fast at periscope depth...but then hes no good captain :D

[bgeorgalas]

Sure but the Problem is that any ship at any speed shows bubbles....

i think this is absolutelly normal....since, large ships have large propelers while in the open sea they create bubles no matter how fast are travelling.....Just watch the trail that a boat/ship leaves behind....

Regarding the cavitation matter: In work we use quite often a boat (5m long) driven by 40hp motor....pushing it at the max (i.e. 5.000rpm for the mottor i do not know the rpm of the propeller) we barely can make 28-30 km/h and we are cavitating a lot....so just think of a torpedo going at 35 knots....

And again if we take the famous 688 hunter killer as an example....If i am not wrong around 50ft depth you got the "conn sonnar cavitating" if you pushed your speed above 10-12knots....(for sure i remember that reaching the "top" 32 knots speed was possible without cavitating below 800ft or so) think of a torpedo travelling at 6m with 35 knots.....(take also into consideration that the torpedo has a smaller propeller that a 688 sub= more rpm to maintain the same speed)

sorry for editing but i invite you to watct this: http://www.youtube.com/watch?v=KBHVjMHx150&feature=related