News

Prof. Bisetti to deliver a 6 hr short course at the 2015 ICISS

iciss_124x1245/29/2015
Prof. Bisetti will deliver a short 6 hr course on reactive flow modelling within the 2015 International Combustion Institute Summer School (ICISS) in Combustion Fundamentals and New Technologies to be held from May 31 to June 5 at the Conservatorio delle Orfane a Terra Murata, Isola di Procida, Napoli, Italy.


Prof. Bisetti to give invited reflection at ISF-2

8/3/2014 
Prof. Bisetti has been invited to deliver an invited reflection at the 2nd International Sooting Flame (ISF) workshop, to be held Aug 2-3, 2014 in Pleasanton, CA. The ISF workshop is an international forum for research on soot formation in laminar, turbulent, and pressurized flames. Learn more at the ISF website.


Attendance to the 35th Symposium on Combustion!

news_symp8/3/2014 
Several team members will attend the  Symposium on Combustion to be held Aug 3-8, 2014 in San Francisco, CA. The group will participate with two oral presentations (Prof. Bisetti & Dr. Attili) and two work-in-progress posters (PhD students Han & Abdelgadir).


Paper on soot formation in flames

news_roysoc7/14/2014
Bisetti and coworkers have published an invited paper in the Philosophical Transactions of the Royal Society A. The paper explores how direct numerical simulation (DNS) of turbulent combustion are used to unravel complex physical mechanisms and to support improvements to engineering models for the formation of pollutants. The paper is available here.


Tribrachial flames explained!

news_pci7/12/2014 
The Symposium paper by Bisetti, Sarathy, Toma, and Chung on tribrachial flames is now in press. The paper reports the results of a campaign of two-dimensional, steady, laminar simulations of tribrachial n-heptane flames stabilized downstream aof a round jet. The calculations feature detailed finite rate chemistry and transport. The paper is available here.


On aerosol formation in mixing layers

news_pf6/25/2014
A paper by Zhou, Attili, Al Shaarawi, and Bisetti uses Direct Numerical Simulation to investigate the interaction of turbulent mixing and condensing aerosols. The DNS produced a database of aerosol and fluid statistics, which sheds light into the formation and growth of aerosols by supersaturation induced by mixing. The paper is available here.


On the interaction of turbulence and soot formation

6/21/2014 
A paper by Attili, Bisetti, Mueller, and Pitsch, submitted to the 35th Symposium on Combustion,is now in press. The paper reports on a set of DNSs of turbulent nonpremixed flames with significant soot formation. The Damkohler number of the flames is varied parametrically and the effects on soot formation are observed. The paper is available here.


Analysis of the T/NT interface in mixing layers

news_jt4/24/2014
A paper by Attili, Cristancho, and Bisetti investigates the statistics of the turbulent/non-turbulent (T/NT) interface separating the irrotational fluid from the turbulent flow regions of high vorticity in a spatially developing mixing layer.  The analysis is conducted by postprocessing results from a massive 3-billion grid point simulation of a turbulent mixing layer. The paper is available here.


New insight into non-thermal electrons in flames

news_ctm2/7/2014
A new paper by Bisetti and El Morsli investigates the kinetic parameters, collision rates, and transport properties of non-thermal electrons in flames. The paper’s approach is novel, as it combines accurate solutions to the Boltzmann kinetic equation with laminar flame calculations. The paper is available here.


A massive DNS of soot formation in turbulent flames

news_cf1/6/2014
Attili and coworkers published a new paper on Combustion and Flame detailing the results of a massive DNS of a sooting turbulent nonpremixed flame. The simulation is the largest of its kind with 500 million grid points, 50 reactive scalars, and 1.2 billion notional particles to describe soot transport. The paper is available here.


Team members to participate in this year’s APS/DFD meeting

11/19/2011
Prof. Bisetti, Dr. Attili and Dr. Zhou will be attending this year’s APS/DFD meeting to present their work on turbulent mixing and condensing droplets in turbulent wakes. They contribute with two oral presentations and one poster for the gallery of fluid motion.


RFML research featured at this year’s SC11 during the KAUST reception

11/16/2011 

Prof. Keyes mentioned our recent work on simulating a turbulent mixing in a spatially developing mixing layer as an example of the extraordinary science enabled by KAUST’s own supercomputer. Prof. Keyes presentation included the following slide featuring a beautiful rendering of a conserved, passive scalar iso-surface by KAUST’s visualization lab.

The members of the Reactive Flow Modeling Laboratory are among the largest users of Shaheen, the IBM Blue Gene/P system at KAUST. For this particular work, Dr. Antonio Attili used up to the entire supercomputer to solve the Navier-Stokes equations on 3 billion grid points. The simulation required 10M cpu-hours and produced data in excess of 100 TB.
Research on turbulent mixing processes is one of the key research areas in combustion science. The RFML team conducts active research in this area of applied physics.

http://sc11.supercomputing.org/