DFG Project PF 394/13–1

Numerical and experimental investigation of flow and particle movement in thin slab moulds

Incre­asing demands on the cos­ts and qua­li­ty of con­ti­nuous cast pro­ducts are the moti­va­ti­on to con­ti­nuous­ly opti­mi­ze the con­ti­nuous cas­ting pro­cess. Inno­va­ti­ve pro­ces­ses such as thin slab con­ti­nuous cas­ting lead to lower cos­ts and signi­fi­cant­ly lower ener­gy con­sump­ti­on. For fur­ther opti­mi­sa­ti­on of the cas­ting pro­cess with regard to jet qua­li­ty, pre­cise know­ledge of the flow and move­ment of con­ta­mi­na­ting par­tic­les is important. In this appli­ca­ti­on, the ana­ly­sis of the flow in the thin slab mould is to be car­ri­ed out expe­ri­men­tal­ly on a 1:1 water model in the labo­ra­to­ry (IOB) and nume­ri­cal­ly with the aid of coar­se struc­tu­re simu­la­ti­on (AIA). On the water model, the IOB deter­mi­nes sta­tio­na­ry and tran­si­ent velo­ci­ty fields of the water flow by means of laser-opti­cal mea­su­ring methods. For the simu­la­ti­on of the tran­si­ent gra­vi­ty die flow and the descrip­ti­on of the par­tic­le move­ments coar­se struc­tu­re simu­la­ti­ons are neces­sa­ry, which are car­ri­ed out at the AIA. A Lagran­ge model is used for the deter­mi­na­ti­on of par­tic­le resi­dence times and the move­ment of par­tic­les. The pro­ject part­ners IOB and AIA coor­di­na­te the expe­ri­men­tal and simu­la­ti­on para­me­ters, wher­eby the expe­ri­men­tal data ser­ve to vali­da­te the coar­se struc­tu­re simu­la­ti­ons. The results ser­ve to increase the under­stan­ding of the pro­cess and thus the tar­ge­ted fur­ther deve­lo­p­ment of the process.

Logo DFGThe pro­ject was fun­ded by the Deut­sche For­schungs­ge­mein­schaft (DFG) under the refe­rence num­ber PF 394/13–1.