The numerical outcomes were compared with experimental results obtained on a test bench in a wind tunnel. The determined aerodynamic resistance coefficients for various cross-sections of finned pipe profiles can be used to calculate the wind force acting on individual profiles. CFD method is of great importance in designing and testing various types of hydraulic valves. In this regard, they are mainly pressure or flow control valves. Flow control valves are designed to maintain a constant flow rate regardless of the changing pressure. The proposed three-way valve [6] allows the required flow rate to be held at a supply pressure slightly higher than the load pressure. This work included building mathematical and simulation models, conducting numerical simulations in Ansys/Fluent and Matlab/Simulink environments and experimental verification of results using a valve prototype on a test bench. The main contribution of the work was to present a proposal for a new constructional solution of a valve and estimate its operational characteristics. In turn, the article [7] presents a proposal and numerical analysis of a hydraulic system consisting of one pump with constant capacity supplying many receivers in the form of hydraulic motors, using the example of a rail grinder. The proposed approach required splitting the fluid stream, which was achieved using 2-way flow control valves. As part of the preliminary CFD tests, the pressure and speed distributions of the flow control valve were obtained, and the nozzle flow coefficients were determined as a function of the valve spool position. Then, a mathematical model of the system was formulated, which was used to build a simulation model in the Matlab/Simulink environment. During subsequent simulations, the system's ability to achieve the assumed performance was verified, and operational parameters, as well as energy efficiency, were examined in the given load range. The results showed that the system was able to effectively perform the required work cycles with sufficient speed and accuracy. The works using the CFD method presented in articles [1; 2; 3; 4; 5; 6; 7] show a wide range of its applications, using a working medium in the form both gas and liquid. The obtained results allow unfavourable phenomena such as cavitation to be eliminated and new innovative solutions for valves and other equipment to be created with improved operating parameters and lowered energy consumption. We warmly thank the authors for sending original works showing new, innovative solutions for the industry. We encourage for further cooperation. New functionalities of programs such as Ansys/Fluent or ANSYS/CFX create opportunities for further development of CFD technology and the performance of increasingly complex and more accurate analyses. Writing--original draft preparation, E.L. and G.F.; writing--review and editing, E.L. and G.F. All authors have read and agreed to the published version of the manuscript. We would like to thank all authors of the articles published in the special issue \"Industrial Applications of Computational Fluid Dynamics\" for their contribution. We also appreciate the commitment of all people involved in the editing and publishing process, with special thanks to all the staff involved in this Special Issue. The authors declare no conflict of interest.