getting 0m/s velocity at velocity inlet of 350 m/s

cheap_person · November 24, 2024, 04:17

hi there!
hope you all are doing well.

I am performing a simple fluid flow cfd simulation of chamber. where i want to see how air is flowing.

surprisingly, In result at inlet, i am getting 0 m/s but i applied 350m/s in velocity inlet boundary condition.

I've already run a lot of simulation; I was getting correct value of velocity.
but, from last couple of simulation i am getting wrong value.

please! share me your solution or thoughts,
your every word really means to me a lot.

sending positive vibe!
cheap person

FFF-5-Setup-Output2.jpg

FFF-5-Setup-Output.png

ghorrocks · November 24, 2024, 05:13

Please attach your output file.

cheap_person · November 24, 2024, 07:11

sir, there was no such notification and written in the console. i remember.

However, I am sharing the screenshot.
in reality, I don't know where it is placed. could you please help me out if that file is necessary?
i tried to find the file navigation problem but failed.

i was waiting for your reply in my last forum, where I asked my problem that is still not solved by this time.
My old cfd- online forum

hope you will reply me there as well.

Thank you, Sir Glenn, for always being here for helping us.

ghorrocks · November 24, 2024, 17:19

The output file is the text file shown in solver manager. It will be named <FILE>_001.out or something like that.

It contains your simulation setup, physics, how convergence has progressed and many other details. We can diagnose most problems from that file.

So please find the output file and put it as an attachment to the forum. If the output file is too big then snip it down small enough to attach.

cheap_person · November 25, 2024, 14:14

i couldn't find the output file.

but i ran this simulation again.
and copy pasted the console text in txt file that i am providing

Opaque · November 25, 2024, 14:39

You are posting in the wrong forum.

cheap_person · November 25, 2024, 22:47

Quote:

Originally Posted by Opaque

You are posting in the wrong forum.

Hello sir opaque again!
How are youuu doing?

Ummm, should I post this in main CFD forum?
Could you please explain how it is different from the others?

So that, I can post in right forum from next time?

ghorrocks · November 25, 2024, 22:53

You are doing the simulation in Fluent. So post it on the Fluent forum: https://www.cfd-online.com/Forums/fluent/

Gert-Jan · November 26, 2024, 06:37

One of the many reason why I prefer CFX over Fluent........... it has an output file.

cheap_person · November 27, 2024, 02:21

thanks to you all to correct me.

by the next I will ensure that I will be posting in correct forum.

November 24, 2024, 04:17	getting 0m/s velocity at velocity inlet of 350 m/s	#1
cheap_person Member cheap person Join Date: Mar 2024 Location: New Delhi, India Posts: 34 Rep Power: 2	hi there! hope you all are doing well. I am performing a simple fluid flow cfd simulation of chamber. where i want to see how air is flowing. surprisingly, In result at inlet, i am getting 0 m/s but i applied 350m/s in velocity inlet boundary condition. I've already run a lot of simulation; I was getting correct value of velocity. but, from last couple of simulation i am getting wrong value. please! share me your solution or thoughts, your every word really means to me a lot. sending positive vibe! cheap person FFF-5-Setup-Output2.jpg FFF-5-Setup-Output.png

November 24, 2024, 05:13		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	Please attach your output file. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

November 24, 2024, 17:19		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	The output file is the text file shown in solver manager. It will be named <FILE>_001.out or something like that. It contains your simulation setup, physics, how convergence has progressed and many other details. We can diagnose most problems from that file. So please find the output file and put it as an attachment to the forum. If the output file is too big then snip it down small enough to attach. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

November 25, 2024, 14:39		#6
Opaque Senior Member Join Date: Jun 2009 Posts: 1,880 Rep Power: 33	You are posting in the wrong forum. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

November 25, 2024, 22:53		#8
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	You are doing the simulation in Fluent. So post it on the Fluent forum: https://www.cfd-online.com/Forums/fluent/ __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

November 24, 2024, 07:11		#3
cheap_person Member cheap person Join Date: Mar 2024 Location: New Delhi, India Posts: 34 Rep Power: 2	sir, there was no such notification and written in the console. i remember. However, I am sharing the screenshot. in reality, I don't know where it is placed. could you please help me out if that file is necessary? i tried to find the file navigation problem but failed. i was waiting for your reply in my last forum, where I asked my problem that is still not solved by this time. My old cfd- online forum hope you will reply me there as well. Thank you, Sir Glenn, for always being here for helping us.

November 26, 2024, 06:37		#9
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,928 Rep Power: 28	One of the many reason why I prefer CFX over Fluent........... it has an output file. karachun likes this.

November 27, 2024, 02:21		#10
cheap_person Member cheap person Join Date: Mar 2024 Location: New Delhi, India Posts: 34 Rep Power: 2	thanks to you all to correct me. by the next I will ensure that I will be posting in correct forum.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Specifying a prescribed velocity inlet	SadBoySquad	OpenFOAM	20	February 9, 2022 07:40
Multiphase flow - incorrect velocity on inlet	Mike_Tom	CFX	6	September 29, 2016 02:27
How to define a fixed velocity for a given mass flow rate on inlet	mqasimali	FLUENT	2	April 12, 2013 18:24
UDF problem : inlet velocity in cyl. coord. system	Jongdae Kim	FLUENT	0	June 15, 2004 12:21
Terrible Mistake In Fluid Dynamics History	Abhi	Main CFD Forum	12	July 8, 2002 10:11