Turbulent flows are powerful means for promoting many processes of chemical engineering. Through more than a century of specialists' research, various more or less complex calculating procedures for the prediction of turbulent mean flow are available. As a rule, however, these approaches do not provide an intuitive understanding of the underlying physics of flow. Therefore, an approach based on the physical property frequency is proposed which may be seen as a step towards an easier interpretation of turbulent flow phenomena. The significance of the physical property frequency is exemplified by two classical examples of theoretical fluid mechanics, namely the flow around cylindrical objects and fully developed turbulent pipe flow.