Dimensionless Base of Experimental Investigation of Thermogasdynamic Parameters in a Twisted Flow with Combustion

Criterion analysis and experimental study of combustion mechanisms in a bidirectional swirling flow and their relationship with pollutants emission

“…Additional criteria will be compiled on the basis of dimensionless complexes, characterizing the geometric similarity of the flow section of the passage restricting the reactive swirling flow. In the works, 20,24 based on the studies of vortex tubes and bidirectional burners, as well as a synthesis of calculated and experimental data, it is shown that it is advisable to choose two relevant parameters from various combinations of and .…”

“…It is important to say that creating the bidirectional flow is one of the main properties of the swirling flow. The literature survey allows us to state that bidirectional swirling flows are characterized by a well‐developed stabilization area at the interface of flows moving in opposite directions, whereas the peripheral flow provides for convective wall cooling 23,24 …”

“…The literature survey allows us to state that bidirectional swirling flows are characterized by a well-developed stabilization area at the interface of flows moving in opposite directions, whereas the peripheral flow provides for convective wall cooling. 23,24 In bidirectional flows, a coaxial motion may be decomposed into two distinct flows: an outer annular flow directed toward the headwall of the combustor, and an inner core flow directed toward the end wall. 25 Both flows are swirling and rotate in the same direction but their axial velocity components are opposite in sign.…”