Nozzle and droplets

Fatalis · February 24, 2010, 18:08

Hello, i am a newcomer in this forum and also just recently studied FLUENT, so i think i am going to need a lot of help from the good people of this forums

My project is quite simple, where a nozzle with pressure of 10 bars eject water mist to a room of 2 x 1 m with 1 atm pressure.

My problem is how do you make the water of continuous phase inside a nozzle disperse and become droplets at the nozzle's exit.

Also i was hoping to get a wide range of water mist ejected into the room, do i need to change the geometry of the nozzle?

Thanks for the attention and i am looking forward to your answers.

bugra · February 26, 2010, 18:57

hi,
i study on the same problem, but i want to know only the dispersion of water in room, i've writen a lot in this forum but i couldn't get more help.

i use vof model in order to solve this problem (because i only want to see the dispersion). it's working but i know for example at 3 bars, the water must arrive 9 mt forward from nozzle (by means of experiments). but in fluent solution, it seems to go about 1 mt forward. i couldn't understand what is wrong.

if u wish to know about how to solve my problem, i can tell you about the case.

regards...

Bugra

mesumon203 · February 26, 2010, 22:22

Hi i am trying to solve the same problem but with DPM Method. i wanna get help from you peoples.

Fatalis · February 26, 2010, 23:36

thanks for the replies,

for Bugra, i would like to know you're problem specifically and how you use the VOF in this problem. I've been reading some manuals and some of them points out at DPM, however i have never used it before.

Also i have been wondering if i put the tip of the nozzle inside of the room, will that make any difference? because in my case, the tip of the nozzle is at the exact boundary of the room.

February 24, 2010, 18:08	Nozzle and droplets	#1
Fatalis New Member Anonymous Join Date: Feb 2010 Posts: 2 Rep Power: 0	Hello, i am a newcomer in this forum and also just recently studied FLUENT, so i think i am going to need a lot of help from the good people of this forums My project is quite simple, where a nozzle with pressure of 10 bars eject water mist to a room of 2 x 1 m with 1 atm pressure. My problem is how do you make the water of continuous phase inside a nozzle disperse and become droplets at the nozzle's exit. Also i was hoping to get a wide range of water mist ejected into the room, do i need to change the geometry of the nozzle? Thanks for the attention and i am looking forward to your answers.

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February 26, 2010, 18:57		#2
bugra Member B. Selenbas Join Date: Dec 2009 Posts: 37 Rep Power: 16	hi, i study on the same problem, but i want to know only the dispersion of water in room, i've writen a lot in this forum but i couldn't get more help. i use vof model in order to solve this problem (because i only want to see the dispersion). it's working but i know for example at 3 bars, the water must arrive 9 mt forward from nozzle (by means of experiments). but in fluent solution, it seems to go about 1 mt forward. i couldn't understand what is wrong. if u wish to know about how to solve my problem, i can tell you about the case. regards... Bugra

February 26, 2010, 22:22		#3
mesumon203 New Member S.M.Sumon Join Date: Feb 2010 Location: s.korea Posts: 19 Rep Power: 16	Hi i am trying to solve the same problem but with DPM Method. i wanna get help from you peoples.

February 26, 2010, 23:36		#4
Fatalis New Member Anonymous Join Date: Feb 2010 Posts: 2 Rep Power: 0	thanks for the replies, for Bugra, i would like to know you're problem specifically and how you use the VOF in this problem. I've been reading some manuals and some of them points out at DPM, however i have never used it before. Also i have been wondering if i put the tip of the nozzle inside of the room, will that make any difference? because in my case, the tip of the nozzle is at the exact boundary of the room.