TY - JOUR
T1 - Experimental analysis of turbulent structure of viscoelastic fluid flow in downstream of two-dimensional orifice
AU - Tsurumi, D.
AU - Kawada, S.
AU - Kawase, T.
AU - Tsukahara, T.
AU - Kawaguchi, Y.
N1 - Publisher Copyright:
© 2012 Begell House, Inc.
PY - 2012
Y1 - 2012
N2 - We performed PIV measurements on the turbulent orifice flows of water and of viscoelastic fluid in two orthogonally different planes, namely, x-y and x-z plane: x, y, and z are the streamwise, wall-normal and spanwise directions, respectively. In the orifice flow of the viscoelastic fluid, a 150-ppm cationic surfactant CTAC (cetyltrimethyl ammonium chloride) solution, spanwise Kelvin-Helmholtz vortices emanating from the orifice edge were damped and wall-normal turbulent motions were greatly suppressed. On the other hand, high-speed fluid streaks in the separated shear layer were found to be almost similar to the water flow by the x-z-plane observation, implying the existence of streamwise vortices in the shear layer.
AB - We performed PIV measurements on the turbulent orifice flows of water and of viscoelastic fluid in two orthogonally different planes, namely, x-y and x-z plane: x, y, and z are the streamwise, wall-normal and spanwise directions, respectively. In the orifice flow of the viscoelastic fluid, a 150-ppm cationic surfactant CTAC (cetyltrimethyl ammonium chloride) solution, spanwise Kelvin-Helmholtz vortices emanating from the orifice edge were damped and wall-normal turbulent motions were greatly suppressed. On the other hand, high-speed fluid streaks in the separated shear layer were found to be almost similar to the water flow by the x-z-plane observation, implying the existence of streamwise vortices in the shear layer.
UR - http://www.scopus.com/inward/record.url?scp=85073490286&partnerID=8YFLogxK
U2 - 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2440
DO - 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2440
M3 - Conference article
AN - SCOPUS:85073490286
SN - 2377-2816
VL - 2012-September
SP - 2367
EP - 2376
JO - Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer
JF - Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer
T2 - 7th International Symposium On Turbulence, Heat and Mass Transfer, THMT 2012
Y2 - 24 September 2012 through 27 September 2012
ER -