HR: 0800h
AN: A41D-0737    [Abstracts]
TI: correction to numerica advection of moments of the particle size distribution in eulerian model
AU: * chang, l
EM: lschang@bnl.gov
AF: brookhaven national lab., 815E, 75 rutherford, upton, ny 11973,
AU: schwartz, s
EM: ses@bnl.gov
AF: brookhaven national lab., 815E, 75 rutherford, upton, ny 11973,
AU: mcgraw, b
EM: rlm@bnl.gov
AF: brookhaven national lab., 815E, 75 rutherford, upton, ny 11973,
AU: lewis, e
EM: elewis@bnl.gov
AF: brookhaven national lab., 815E, 75 rutherford, upton, ny 11973,
AB: Quadrature method of moments(QMOM) offers a alternative more efficient than sectional methods and more accurate than modal methods. If QMOM is incorporated into eulerian model, invalid moments set are produced by nonlinear transport methods when valid moments are transported as seperate tracers. A non-negative least squares (NNLS) soultion eliminates the problem without requiring modification of the transport algorithm. The evaluation of NNLS for two representative advection schemes in one dimension was done for 10E4 test cases.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting