An approach to identification of dynamic thermal and structural characteristics of gas flows running over a flat obstacle is introduced. Recognition of instant temperature fields is carried out with the help of thermal imaging using grid converting temperature that is made of thin low heat conductivity strings and an obstacle made of zinc selenide coated with carbon. The results of processing of three-dimensional arrays from thermal images succession carried out according to an algorithm allowing obtaining different dynamic flow characteristics such as drawing up a temperature pulsation frequency distribution pattern are presented. The approach demonstrated gives opportunity to reveal localization and configuration of structural formations, their specific frequencies, correspondence of substructures linear sizes. On the basis of this approach development of new wind turbine fan shapes where not only kinetic but also thermal energy of air flow interacting with the air flow receiver are transformed into electric energy is possible