The mathematical and numerical simulation model of the liquid steel flow in a tundish is presented in this paper. The problem was treated

as a complex and solved by the finite element method. The single-strand slab tundish is used to continuous casting slabs. The internal work

space of the tundish was modified by the following flow control devices. The first device was a striker pad situated in the pouring tundish

zone. The second device was a baffle with three holes and the third device was a baffle without hole. The main purpose of using these

devices was to cause a quiet liquid mixing as well as give directional metal flow upwards which facilitated inclusion floatation. The

interaction of flow control devices on hydrodynamic conditions was received from numerical simulation. As a result of the computations

carried out, the liquid steel flow and steel temperature fields were obtained. The influence of the tundish modification on velocity fields in

the liquid phase of steel was estimated, because these have an essential influence on high quality of a continuous steel cast slab.