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1、? COMSOLNEWSA T E C H N I C A L C O M P U T I N G M A G A Z I N ECOMSOLNEWS? ?A T E C H N I C A L C O M P U T I N G M A G A Z I N EADVANCED MAGNET LAB: DIRECT DOUBLEHELIX MAGNET ?METELLI: AUTOPART DESIGN ?COVER STORY PAGE 6CovToC+AIntro? ? ?The number of appl i cati on exampl es from the COMSOL user
2、 communi ty i s soari ng: We saw a record-breaki ng 350 pa- pers presented at the annual user conf er-ences. Whi l e we coul dnt fit every paper i nto thi s magazi ne, you can access al l 350 papers through the Mul ti physi cs Communi ty web si te, I n thi s i ssue of COMSOL News, we col - l ected
3、presentati ons from the 2009 user conf erences that we f ound most i nspi ri ng. Our favori te exampl es of si mul ati on at work span the uni verse of engi neeri ng and sci - ence. They range from cool i ng super mag- nets i n the CERN Large Hadron Col l i der to how NASA extracted water from the M
4、oon, to more practi cal uses of model i ng such as i nj ecti on mol di ng of medi cal i mpl ants and creati ng the perf ect sound from l i ne-array l oudspeakers. We hope that you enj oy thi s edi ti on of COMSOL News and that youl l find these sto- ri es as much of an i nspi rati on i n your work a
5、s we have i n ours. To experi ence the mul ti physi cs commu-ni ty first hand, we woul d l i ke to i nvi te you to the 2010 COMSOL Conf erences. You wi l l get a first l ook at the COMSOL API , attend over a dozen mi ni courses, and connect wi th f el - l ow users. Learn more at conference2010.Bern
6、t Ni l sson Sr . VP of Marketi ng COMSOL, I nc.CONTENTS / COMSOL NEWS 2010MULTI PHYSI CS? ? Anal ysi s of Room Acousti cs? ? Sonomagneti cs Anal ysi s? Devel opment of Mosqui to TrapLI GHTI NG? Mul ti physi cs Model i ng i n Di scharge Li ghti ngAEROSPACE? Mi crowavi ng Moondust wi th COMSOLRESERVOI
7、 R NAVI GATI ON? Model i ng Tool s f or Formati on Eval uati on and Reservoi r Navi gati onMEDI CAL? Si mul ati ng Energy-Ti ssue I nteracti ons f or I mproved Pati ent Outcomes? Mi xed Pol ymers Form Uni que One-Pi ece Medi cal I mpl antMAGNETI CS? Desi gni ng New Magnet Technol ogy A Mul ti physi
8、cs Chal l enge? Cool i ng of the Largest Magnet i n the Worl d at CERNAUTOMOTI VE? Model i ng Conti nual l y I mproves Advanced Materi al s f or Automobi l es? Si mul ati on Software Makes Maj or Contri buti ons to Mul ti pl e Aspects of Auto-Part Desi gn and Manuf acturi ngCONSUMER PRODUCTS? Si mul
9、 ati on Hel ps Devel op Better Househol d ProductsACOUSTI CS? Excel l ent Sound to Every Seat i n the House? ? COMSOL Acousti cs Modul e Fi ni te El ement Model i ng f or I nf rasound Propagati onNUCLEAR ENERGY? Model i ng Nucl ear Fuel Behavi or f or Enhanced Reactor Perf ormance and Saf ety? Nordi
10、 c Researchers Model Deep Geol ogi c Reposi tory of Nucl ear WasteBATTERI ES? Model i ng Thermal Runaway f or Saf er Li thi um I on Batteri esMANUFACTURI NG? Model i ng Fi nds the Mi ni mum Energy f or the Best Wel dGUEST EDI TORI AL? Hi gh Perf ormance Computi ng f or the Masses?A corona discharge
11、is used to study fundamental ignition processes in high-efficiency lamps.PHOTO COURTESY OF DR. HELMAR ADLER, OSRAM SYLVANIA RESEARCH AND DEVELOPMENT. 2010, al l ri ghts reserved. COMSOL NEWS i s publ i shed by COMSOL, I nc. and i ts associ ated compani es. COMSOL and COMSOL Mul ti physi cs are regi
12、stered trademarks of COMSOL AB. Other products or brand names are trademarks or regi stered trademarks of thei r respecti ve hol ders.We wel come your comments on COMSOL NEWS; contact us at newscomsol . com. ? ?/? C O M S O L N E W S 2 0 1 0 Advanced Magnet LabAl taSi m Technol ogi esB these cur-ren
13、ts and fiel ds propagate mechani cal l y wi th the acousti c wave. Figure 1. Radial component of acoustic velocity for source 500m below sea level.The speed of sound i s consi dered to be dependent on the depth, and the ocean i s treated as a conducti ng medi um. CovToC+AIntroC O M S O L N E W S 2 0
14、 1 0 /? ?MULTI PHYSI CS ALTASIM TECHNOLOGIES, COLUMBUS, OHIO?JEFFREY CROMPTON, SERGEI YUSHANOV, KYLE KOPPENHOEFER, ALTASIM TECHNOLOGIES, COLUMBUS, OH at night heat is released at the temperature of the human body caus- ing evaporation of the attractant, thus mimicking the scent, moisture, and tem-pe
15、rature profile of a sleeping human. Mosquitoes are attracted into the cone where they are trapped for disposal. AltaSim Technologies used COMSOL Multiphysicsto analyze fluid flow and thermal distribution in the trap and subsequently optimize the temperature and flow velocities to trap mosquitoes. The analytical approach provided rapid verification of the technology and al- lowed optimization of
