|
[Sponsors] |
May 13, 2000, 19:06 |
PMARC-12 question
|
#1 |
Guest
Posts: n/a
|
I have been playing around with a copy of pmarc-12 I bought from COSMIC some time ago. I have never fully figured it out yet. The manual assumed that you were already familar with pmarc and was not very good at providing real-world examples on how to use it. Does anyone know of a web page that contains some example model files?
Better still, can someone answer a question about low-order panel method programs and their use of wake planes? I am trying to model a bi-plane design and am confused on whether each wing needs a wake plane attached to the trailing edge (including the tail section). I am concerned that having multiple co-planar wake planes will give false results. Also, there was no mention of having a vertical wake plane for the vertical tail section. Do you need one? (I need this to model yaw stability.) Thanks. mlewis at ipsa.net (change the ' at ' to '@' to make an email address. I get enough spam already.) |
|
May 14, 2000, 12:35 |
Re: PMARC wake sheets
|
#2 |
Guest
Posts: n/a
|
I had used PMARC several years ago, and my understanding was that you needed to have a set of wake panels off of each and every lifting surface. Thus I imagine your tail surface should also have a wake sheet.
Since PMARC is a potential flow solver, the circulation generated by each of your wings/tails must be offset by a wake sheet, which carries the opposite circulation, thus preserving irrotational flow. The input is a little burdensome with its host of namelists I agree. Maybe the program's authors (Ashby, et.al.) have something on the NASA Ames site which will help? Good luck. |
|
May 17, 2000, 15:13 |
Re: PMARC-12 question
|
#3 |
Guest
Posts: n/a
|
Yes, you need to define a wake off of each wing as well as the elevator. You do not need a wake off of the rudder unless you are modeling rudder deflection and/oe a yaw condition.
Dave P |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
question about uds | tanven | FLUENT | 2 | July 5, 2015 12:22 |
Unanswered question | niklas | OpenFOAM | 2 | July 31, 2013 17:03 |
Question about Table applicaiton. | universez | OpenFOAM Running, Solving & CFD | 0 | January 12, 2010 21:31 |
CHANNEL FLOW: a question and a request | Carlos | Main CFD Forum | 4 | August 23, 2002 06:55 |
question | K.L.Huang | Siemens | 1 | March 29, 2000 05:57 |