Personally, I am back to my original answer. Your design end point is to support some weight that requires a certain mass flow rate. I would work up that require output mass flow rate and work backwards to determine your input requirements.
Need more data:
Have you determine whether the expansion of the gases is either of the following:
isothermal - p/? = constant
isentropic or adiabatic - p /?^k = constant
polytropic - pV^n = constant
Is the input area ands the output area the same? If not, what are their areas.
Do you have a...
I would use the output pressure to calculate air density and volumetric flow rate, because this would nullified the pressure drop across the porous material.
Furthermore, the output condition is probably a better indicator of the porous material performance
When I was in Tool Design we used diamond pins when we could allow some float in one direction and need to be tightly controlled in the perpendicular direction. Also, we used diamond pins when there was a potential mismatch in CTE's between mating parts. I personally never had an occasion...
Approach I always used is moment distribution analysis
See attached filehttp://files.engineering.com/getfile.aspx?folder=fdf56d91-eecc-4e8c-961b-0058eddabd7e&file=MOMENT_DISTRIBUTION_ANALYSIS_OF_BEAM.XLS
Here are some more, I believe you find helpful. They are from an online textbook I've been studying.
Citation as Goosse Hugues., P.Y. Barriat, W. Lefebvre, M.F. Loutre and V. Zunz, (date of view). Introduction to climate dynamics and climate modeling. Online textbook available at...
I found the source for the melt attachment checkout pages 32 through 35
http://www.iac.ethz.ch/education/bachelor/climate_systems/notizen/The-Cryosphere.pdf
Thank you for this thread
At home now where tons of my research on the Arctic is available.
The following is from Bitz, Cecilia M. & Shawn J. Marshall; 2011; Modeling of the Cryosphere, in the ENCYCLOPEDIA OF SUSTAINABILITY SCIENCE AND TECHNOLOGY, section on Climate Change Modeling and...
If you have not already, you should checkout http://nsidc.org/seaice/processes/albedo.html
Also, checkout
http://www.gi.alaska.edu/~eicken/he_teach/GEOS615icenom/albedo/albedo%20and%20climate.htm
Because you have seven components in your stackup and not all components will be at your maximum or minimum tolerance at the same time, I suggest you perform root sum square on your positive and minus tolerances. You may find the attached excel file helpful.
In addition, you may want to...
I believe the attached figure will answer all your questions about surface finish and how it affect relative cost and tolerancing. It should be noted, that the surface finish exists within the tolerance range...
The best book I ever found on Machine Design is
Deutschman, Aaron D., Walter J. Michels, and Charles E. Wilson; Machine Design, Theory and Practice; Macmillan Publishing Co., Inc.; New York, NY 10022; 1975
