Cavitation damage tests in various polymer solutions have been carried out using a vibratory damage apparatus. The relation of weight loss-time, the damage patterns, the cavitation clouds and the damaged area in a polyacrylamide solution, a sodium carboxy-methylcellulose solution, a hydroxyethylcellulose solution, a guar gum solution and a polyethylene oxide solution are compared and are discussed. It is found that the weight losses in the PAM solution and the Polyox solution, which are more elastic, are smaller than the cases of the other polymer solutions and water after sixty minutes exposure to cavitation.
Get full access to this article
View all access options for this article.
References
1.
TomsB. A.Some observations on the flow of linear polymer solutions through straight tubes at large Reynolds numbers. Proceedings of the First International Congress on Rheology, Vol. 2 1948, pp. 135–141 (North Holland Publishing Company, Amsterdam).
2.
HoytJ. W.The effect of additives on fluid friction. Trans. ASME, J. Basic Engng, June 1972, 94, 258–285.
3.
VirkP. S.Drag reduction fundamentals. Ass. Ind. Chem. Engrs J., July 1975, 21, 625–656.
4.
EllisA. T.WaughJ. G.TingR. Y.Cavitation suppression and stress effects in high-speed flows of water with dilute macromolecule additives. Trans. ASME, J. Basic Engng, September 1970, 92, 459–466.
5.
BrennenC.Some cavitation experiments with dilute polymer solutions. J. Fluid Mech., 1970, 44, 51–63.
6.
TingR. Y.Characteristics of flow cavitation in dilute solutions of polyethylene oxide and polyacrylamide. Phys. Fluids, June 1978, 21, 898–901.
7.
ShapovalI. F.Shal'nevK. K.Cavitation and erosion in aqueous solutions of polyacrylamide. Sov. Phys. Dokl., November 1977, 22, 635–637.
8.
ShimaA.TsujinoT.NanjoH.MiuraN.Cavitation damage in polymer aqueous solutions. Trans. ASME, J. Fluids Engng, March 1985, 107, 134–138.
9.
ShimaA.TsujinoT.On the dynamics of bubbles in polymer aqueous solutions. Appl. Sci. Res., 1982, 38, 255–263.
10.
HammittF. G.RogersD. O.Effects of pressure and temperature variation in vibratory cavitation damage test. J. Mech. Engng Sci., 1970, 12, 432–439.
11.
ShimaA.TomitaY.TakahashiK.The collapse of a gas bubble near a solid wall by a shock wave and the induced impulsive pressure. Proc. Instn Mech. Engrs, 1984, 198C, 81–86.
12.
JosephD. D.BeaversG. S.CersA.DewaldC.HogerA.ThanP. T.Climbing constants for various liquids. J. Rheol., 1984, 28, 325–345.
