This mixing section has inside a first part of the section {HEAD ~ a number} of transition passages which run in the direction of {TAIL ~ flow} and ensure the smooth passing of the flow formed in the swirl generator into a tube arranged downstream 
This mixing section has inside a first part of the section { HEAD ~ a number } of transition passages which run in the direction of { TAIL ~ flow } and ensure the smooth passing of the flow formed in the swirl generator into a tube arranged downstream
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH