Experimental and Numerical Investigation of Flows in Expanding Channels

Vorobieff, Peter ; Putkaradze, Vakhtang

关键词: Jeffery-Hamel flow;    wedge flow;    stability;    bifurcation;   

DOI  :  10.2172/941482
RP-ID  :  DOE/ER/46119-3 Final Report
PID  :  OSTI ID: 941482

美国|英语

来源: SciTech Connect

【 摘 要 】

We present an experimental realization of the classical Jeffery-Hamel flows inside a wedge-shaped channel. We compare the measured velocity fields with the predictions of Jeffery-Hamel theory. A detailed experimental study of bifurcation diagrams for the solutions reveals the absolute stability of the pure outflow solution and an interesting hysteretic structure for bifurcations. We also observe a multiple vortex flow regime predicted earlier numerically and analytically. Experimental studies of the stability of the flow to perturbations at the channel exit are also conducted.