TY - GEN
T1 - Pressure fluctuations in a turbulent flow of a drag-reducing viscoelastic fluid in a sudden-expansion pipe
AU - Shin, Sehyun
AU - Cho, Young I.
PY - 1993
Y1 - 1993
N2 - The role of a viscoelastic non-Newtonian fluid on static pressure distributions and pressure fluctuations across a sudden-expansion step in a circular pipe was investigated in the present study. The expansion ration of the sudden-expansion step was 1.9, and the range of the Reynolds number based on the inlet diameter was 5,000-25,000. Tap water and aqueous solutions of polyacrylamide (Separan AP-273) were used as the Newtonian fluid and viscoelastic non-Newtonian fluid. Pressure fluctuations with the polyacrylamide solutions was much smaller than those with water, and decreased with increasing concentration of the polyacrylamide solution.
AB - The role of a viscoelastic non-Newtonian fluid on static pressure distributions and pressure fluctuations across a sudden-expansion step in a circular pipe was investigated in the present study. The expansion ration of the sudden-expansion step was 1.9, and the range of the Reynolds number based on the inlet diameter was 5,000-25,000. Tap water and aqueous solutions of polyacrylamide (Separan AP-273) were used as the Newtonian fluid and viscoelastic non-Newtonian fluid. Pressure fluctuations with the polyacrylamide solutions was much smaller than those with water, and decreased with increasing concentration of the polyacrylamide solution.
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M3 - Conference contribution
AN - SCOPUS:0027251180
SN - 0791809579
T3 - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
SP - 43
EP - 51
BT - Separated Flows - 1993
PB - Publ by ASME
T2 - Fluids Engineering Conference
Y2 - 20 June 1993 through 24 June 1993
ER -