Library Subscription: Guest
Second Symposium on Turbulence and Shear Flow Phenomena
June, 27-29, 2001, KTH, Stockholm, Sweden

DOI: 10.1615/TSFP2

THE EFFECT OF SCHMIDT NUMBER ON THE MIXING IN THE WALL REGION OF AN IMPINGING JET

pages 467-472
DOI: 10.1615/TSFP2.1520
Get accessGet access

ABSTRACT

Large Eddy Simulation of a semi-confined impinging jet at Reynolds number 10000 was performed. The impingement distance was varied between 2 and 6 nozzle diameters. The unsteady spatially filtered incompressible Navier-Stokes equations were solved together with a transport equation for the concentration of an inert additive using a multi-grid finite difference code with a staggered grid. The un-resolved scales of the flow as well as the sub-grid scale mixing were modelled implicitly through the truncation errors of the discretisation. The transport of 4 passive scalars with Schmidt numbers in the range 0.1 to 100 has been studied. The results show differences in mean concentration difference of up to 25%. As expected, that the major differences in scalar concentration occur where the velocity gradients are large, i.e. close to the nozzle and in the wall jet region.

Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections Prices and Subscription Policies Begell House Contact Us Language English 中文 Русский Português German French Spain