Events, courses, reports, miscellany...
This page contains events of interest, as well as miscellaneous data, programs and reports written by Michel Louge.
As an example of application of granular materials, here is a movie showing an innovative process for producing ultra high strength concrete pipes.
Bill Nye's '77 Solar Noon Indicator over Rhodes Hall
Bill Nye "the Science Guy", Mechanical Engineering class of
1977, dedicated a unique clock that he donated to Cornell for the facade of Rhodes Hall at a ceremony
on August 27, 2011. Beside simply telling the time of day, this clock
illustrates the difference between legal and solar time by letting
light illuminate a disk at the precise time when the sun culminates
overhead. In memory of his parents, Bill Nye personally designed the
clock and its light guide. See Bill Nye's lecture here.
In 2009-2011, Michel Louge led the group of students (Avraham Aisenberg, Erin Boschert, JB Rajsky, Steven Shine and Ian Werris) who designed the microcontroller that lets light through the Electric Time monumental clock. The microcontroller calibrates time with a GPS and opens a Solatube dimmer letting sky light shine at Solar Noon, per calculations in this worksheet.
Tamara Linsdtrom of YNN Ithaca/Cortland produced this piece on Bill Nye's creative project (August 24, 2011). Alyson Martin filed this report for the Ithaca Journal of August 24. Daniel Aloi wrote this article for the Cornell Chronicle. Channel 9 News in Syracuse posted this piece on its website. Byron Kittle, of the Cornell Daily Sun wrote this article on Bill's dedication. Joe Wilenski of the Cornell Chronicle reported dedication day in this pictorial article and posted a video of Bill Nye's visit.
From left to right and top to bottom: Bill Nye '77 "the Science Guy" personally directs tests of the Solatube system
above the roof of Rhodes Hall on March 27, 2008. The Solar Noon
controller team works with Bill on October 19, 2009, and later enjoys
Chef Harold Evans' table at North Star. Electric Time
and Cornell Facilities raise the clock on August 3, 2011. The Solar
Noon indicator is fully-operational on August 18, 2011. Note the
contrast between the indicator with closed dimmer valve (left) and open
valve (right). JB Rajsky poses on the roof and near the clock. Michel Louge shows the Solatube
Fresnel lens that collects ambient light for the clock face. He poses
in front of the clock on August 19, 2011 at Solar Noon. Bottom: Bill
Nye'77 shares details of his parents' WWII history in front of the
display case in the Rhodes Hall lobby.
This workbook uses solar
ephemeris to calculate the fraction of radiation collected by PV solar
panels at a fixed orientation in 2011. For subsequent years, follow
instructions therein to download the new ephemeris, or look for updates on this page. Subsequent workbooks for 2012 and 2013.
This zipped document contains
several Matlab and other files to implement simple models for Otto and
Diesel engines. This worksheet
contains a fit of the properties of water. Michel Louge currently serves as advisor to the Cornell Baja SAE team.
Dynamics of student-designed machines in MAE2250
"Mechanical Synthesis" at Cornell: Wind-pump and air cart
This file outlines
the dynamics of wind pumps designed by sophomores in MAE 2250, see movie. This
Matlab program implements the
corresponding ODEs. These Matlab, PowerPoint and Excel files describe the
dynamics of an aircart, see movie.
Position papers and presentations
This short paper on "The surprising relevance of a continuum description to granular clusters" in press for the "Focus on Fluids" section of the Journal of Fluid Mechanics discusses the significance of the article of Mitrano, P. P., Zenk, J., Benyahia, S., Galvin, J., Dahl, S. & Hrenya, C., Kinetic theory predictions of clustering instabilities in granular flows: beyond the small Knudsen regime. J. Fluid Mech. 738 (2014), R2. The abstract of this short review follows:
M.Y. Louge: The surprising relevance of a continuum description to granular clusters
homogeneity. In turbulent clouds, industrial reactors and geophysical
flows, discrete particles arrange in clusters, posing difficult
challenges to theory. A persistent question is whether clusters can be
modeled with continuum equations. Recent evidence indicates that
suitable equations can predict the formation of clusters in granular
flows, despite violating the simplifying assumptions upon which they
This 2003 position paper summarizes research challenges for gas-solid suspensions. It was written for a workshop organized by the US DOE at the University of Illinois in May 2002.
Link to Michel Louge's presentation to Cornell's Environmental Law Society Workshops Program entitled "Are Technological Solutions an Excuse for Inaction?" on September 30, 2010.
US patents 5459406
and 5546006 are licensed to
Their practical use is to measure the density, velocity or other
physical parameters affecting dielectric suspension properties (e.g.,
humidity) of granular suspensions. Their principal advantage is to
possess a small measurement volume of know extent, and to be deployable
through conductive walls held at the ground voltage. Applications have
included catalytic cracking, lost-foam casting, stratigraphy of the
snow pack, sand dunes,
snow avalanches, etc.
Michel Louge's PhD thesis "Shock Tube Study of Cyanide Species Kinetics and Spectrocopy" contains information on kinetics and spectroscopy of species involved in the fuel-nitrogen mechanism of nitric oxide formation. It also provides fortran source codes for the spectrocopy of CN and NCO molecules.
The shock tube of the High Temperature Gasdynamics Laboratory, picture taken circa 1981.
This zipped file contains FORTRAN source codes for calculating chemical kinetic mechanisms. Compile intp.f to create interactively subroutines containing the mechanism with rate constants contained in the file DABA.LIB. (This file should probably be updated with more recent rate constants...). Then, run the program kin.f with its subroutine created by intp.f. Examples for CO and OH mechanisms are provided in two separate folders.
Louge, M.Y. and Hanson, R.K.: “Shock Tube Study of NCO Kinetics,” Twentieth Symp. (Int.) on Combustion, The Combustion Institute (1984) pp. 665-672.
Louge, M.Y. and Hanson, R.K.: “High Temperature Kinetics of NCO,” Combustion and Flame 58, 291 (1984).
Louge, M., Hanson, R., Rea, E., and Booman, R.: “Quantitative High Temperature Absorption Spectroscopy of NCO at 305 and 440 nm,” J. Quant. Spectr. Radiat. Transfer 32, 353 (1984).
Louge, M.Y. and Hanson, R.K.: “Shock Tube Study of Cyanogen Oxidation Kinetics,” Int. J. Chem. Kinet. 16, 231 (1984).
Roth, P., Louge, M.Y. and Hanson, R.K.: “O- and N-Atom Measurements in High Temperature C2N2 + O Kinetics,” Combustion and Flame 64, 167 (1986).
Louge, M.Y. and Hanson, R.K.: “Shock Tube Study of the High Temperature Absorption Spectroscopy of CH at 431 nm,” Shock Waves & Shock Tubes, Stan-ford Press, (1986) pp. 827-33.
This worksheet documents a bug in Excel involving order of operations.