CFD Online Logo CFD Online URL
Home > Forums > General Forums > Main CFD Forum


Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   January 14, 2014, 07:27
New Member
Ajala Olumuyiwa
Join Date: Jan 2014
Posts: 2
Rep Power: 0
paulriz43 is on a distinguished road
Hi everyone, please am new to using forums help but I need help seriously, I only don't know if I will get it here.
I am an Agricultural student writing his final year project on tree air-assisted crop sprayer, am working on a component part just as my other mates, am working on the air blast mechanism which is a fan which is going to have a duct which other part will be mounted on.
I thought it will be kind of easy working with those FAN LAWS but it looks like it not applicable or It is just not working for my own case, working from the reynolds number is large thereby making my RPM too to be unnecessarily large, 16720 rpm!!! Also the torque and the power too is not right making my shaft diameter to even be larger than the size of my cylindrical duct.
I know am missing it but I don't know where, those material have consulted couldn't provide me with the answers I needed.
Will appreciate anyone with any info that can be of help.
Am working on a duct of 1 m DIA
Need to develop a fan that can produce air that can reach a distance of 18 m
Calculating the effective length of the duct I got it to be 2.53 m
The inlet of the duct will be 1 m DIA but the outlet will be semi-circular, giving the outlet a rectangular view from the plan, which gives a lenght of 1 m and assumption of the breadth to be 0.4 m was made.
paulriz43 is offline   Reply With Quote

Old   March 6, 2014, 02:31
New Member
Join Date: Mar 2014
Posts: 2
Rep Power: 0
raja.shekaran2000 is on a distinguished road
Can anyone having the mathematically solved example problem for navier stokes equation , to find Pressure and velocity at specific time. IF so please post me immediately and also Stream vorticity approach to find pressure and velocity.

raja.shekaran2000 is offline   Reply With Quote


aerodynamics, angle of attack, angle of climb, fan laws

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
simpleFoam parallel AndrewMortimer OpenFOAM Running, Solving & CFD 12 August 7, 2015 18:45
Install OF 1.6.ext on Arch based distribution miro2000 OpenFOAM Installation 4 October 9, 2013 14:39
Question about momentum thickness Reynolds number Anna Tian Main CFD Forum 2 March 4, 2013 10:45
Applications of Reynolds Number Nadeem99 Main CFD Forum 0 December 10, 2012 02:10
Low Reynolds number K-Omega modeling Athar Zaidi Main CFD Forum 0 October 31, 1999 13:59

All times are GMT -4. The time now is 15:25.