The interactions between a structure with its surroundings are important. A realistic prediction of the dynamic behavior of hydraulic turbines in different design conditions is very important for a reliable operation. These interactions are most important when the surrounding fluid is dense. In the design of the hydraulic turbines the dynamic response of the runner must be taken into consideration. The paper aims to present the research done so far in this domain starting with the first analysis done for simple bodies and geometries and continuing with the research done in the hydropower field. An experimental procedure to analyze the added properties in case of a Francis hydraulic turbine is presented together with the results for the analyzed case. The values obtained for added properties led to the conclusion that the procedure gives significant information, and that further investigation must be performed for various operating conditions.