%0 Journal Article
%T Study of Rectangular Underexpanded Microjets
%A Shota Yoshimi
%A Shinichiro Nakao
%A Yoshiaki Miyazato
%J Open Journal of Fluid Dynamics
%P 122-131
%@ 2165-3860
%D 2023
%I Scientific Research Publishing
%R 10.4236/ojfd.2023.132010
%X The underexpanded microjet emerging from a rectangular convergent nozzle with a high aspect ratio at the nozzle exit is investigated numerically using the Reynolds-averaged Navier-Stokes (RANS) simulation with the Menter¡¯s shear stress transport (SST) <i>k</i>-<i>¦Ø</i> turbulence model. The simulation is performed at the nozzle pressure ratio of 5.0 to produce a strong shock and it is validated by a comparison with a rainbow schlieren picture of the microjet. The three-dimensional structure of the shock-containing rectangular microjet is demonstrated using the isopycnic surface and bright-field schlieren representations.
%K Microjets
%K Rainbow Schlieren
%K RANS Simulation
%K Rectangular Nozzle
%K Shock Waves
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=125254