Physical (water) modeling of metal flow isa useful adjunct to mathematical modeling in developingour understanding of continous casting of steel and DC(or EM) casting of aluminum. Results from physicalmodels can ,for example, be used to test mathematicalmodels. The research described in this poster is aproject where particle image velocimetry (PIV) is usedto gather data on large water models of casters. PIV hasproven to be an efficient tool in these applications;velocities can be measured simultaneously over a wholeplane of the fluid. Ensemble averaging of the velocitiesyields time averaged velocities in the case of turbulentflow. Results include the significant effect of argoninjection at the submerged entry model on flow in themold region of the steel caster, the sensitivity of theflow in the sump of the aluminum caster to misplacementof the distributor bag or to partial blockage of theoutflow "windows" of the bag, and the effect of nozzlemis-alignment. The physical modeling has beenaccompanied by mathematical modeling using FIDAP andthere is reasonable agreement between the PIVmeasurement and predictions of FIDAP. Furtherinformation and results are available athttp://www.mse.berkeley.edu/faculty/Evans/Projects/PIV/piv.html
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