Supersonic Laminar Flow Past a Blunt Fin: Duality of the Numerical Solution

Dual Numerical Solution for 3D Supersonic Laminar Flow Past a Blunt-Fin Junction: Change in Temperature Ratio as a Method of Flow Control

“…In our previous study, it was established that the dual solution occurs in some range of determining parameters, such as the Reynolds number and the Mach number, and also in different geometric configurations [15]. In the present work, we continue our investigations of the possibility of dual solution existence in the case when the temperature ratio is varied.…”

“…In the later computational study [9], it was established that the numerical solution is time dependent in certain cases investigated in [8]. Recently, in our investigations [14] it was shown that, under the conditions of study [8], a dual solution exists with two different solutions corresponding to metastable states of flow with different configurations of the vortex structure in the leading separation region; the revealed duality of the solution persists in a certain Reynolds number range [15]. At the same time, concerning the computations, the authors of [8] interpreted the obtained numerical solutions as stationary and unique for all the cases considered (Re D = 1.25 × 10 4 , 2.50 × 10 4 , and 3.75 × 10 4 ).…”

“…In the case of supersonic flow past any obstacle mounted on the streamline surface, separation of the flow occurs due to the interaction of the shock wave with the boundary layer. The complex problem of the shock wave/boundary layer interaction is of great scientific and practical importance and has been intensively studied for many years, starting from the 1950s (see, for instance, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]).…”

“…The model problem of supersonic flow past a symmetric blunt fin mounted on a plate is most often considered in the literature [5][6][7][8][9][10][11][12][13][14][15]. This type of geometry is a simplified representation of a wing-body or fin-body junction on a high-speed vehicle [16].…”

“…Distinctions in vortex structure also lead to different char acteristics of heat flux distribution. A more extended analysis of the dual solution is given in[15].…”