Analysis, development and optimization of engineering systems in the area of power, process and environmental engineering can only be successful if fundamental physical phenomena within machines and devices are well understood, as well as effective and innovative numerical methods combined with experimental methods are developed and regularly improved. In this field of research transport phenomena in fluids and solids with  emphasis on multi-component multi-phase reactive flows present the main experimental and computational challenges. In the field of advanced numerical models for computation of twophase flows further development and advanced application of novel interaction models for numerical simulation of dilute dispersed two-phase flows by the Lagrange-Euler approach will be conducted, including particle-fluid, particle wall and particle-particle interaction for the case of non spherical particles. In the Eulerian part (fluid flow) development of a novel point source particle-fluid interaction model in the context of the Boundary Element Method will be developed, which can be applied to momentum transfer as well as heat and mass transfer from particles. The developed particle models will be implemented in detailed studies of transport phenomena in process flows, including particle coating devices, spray and fluidized
bed dryers as well as in pulmonary delivery of drugs. Numerical models of unsteady and inhomogeneous transport problems in fluid flows will be extended to nanofluid flow modelling in porous media. In environmental engineering transport of particles in fluid flows will be in the centre of the investigation, especially modelling of sedimentation in a secondary clarifier of a wastewater treatment plant and modelling of sediment transport in estuaries and other types of surface water flow. In thermal engineering research will focus on development of computational model for full scale numerical simulation of the process of vial lyophilization, development of numerical techniques for solving direct and inverse problems in dynamic thermography and development of novel controlled cooling/heating testing device for validation of the novel computational tools. The field of reactive flow dynamics of combustion processes will be covered with the development of numerical model of combustion process of solid fuels in appliances with separation of air and fuel supply, models of the heterogeneous transformation of solid fuel into gaseous products, as well as with study of mechanisms for the production of pollutants. Possibilities of using new additives to diesel and alternative fuels to improve the characteristics of high-pressure fuel injection systems within the common rail engines will be studied experimentally and numerically. In studies of cavitation in hydraulic machines Pelton turbines will be studied with a special emphasis on the prediction of cavitation erosion as well as prediction of cloud cavitation in water turbines and pumps.