Sentence:  Within the frame of the Pandtl model the evident formula for the principle of rate defect in a turbulent boundary layer are obtained when unregular <WSD>inblow</WSD> takes place as well as in tubes with exhausting and <WSD>inblow</WSD>. 
Meaning of the word marked with <WSD> tags:  The act or process of blowing in or into; inflation.