{"title":"Negative Pressure Waves in Hydraulic Systems","authors":"Fuad H. Veliev","volume":97,"journal":"International Journal of Mechanical and Mechatronics Engineering","pagesStart":107,"pagesEnd":111,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10000452","abstract":"
Negative pressure phenomenon appears in many
\r\nthermodynamic, geophysical and biophysical processes in the Nature
\r\nand technological systems. For more than 100 years of the laboratory
\r\nresearches beginning from F. M. Donny’s tests, the great values of
\r\nnegative pressure have been achieved. But this phenomenon has not
\r\nbeen practically applied, being only a nice lab toy due to the special
\r\ndemands for the purity and homogeneity of the liquids for its
\r\nappearance. The possibility of creation of direct wave of negative
\r\npressure in real heterogeneous liquid systems was confirmed
\r\nexperimentally under the certain kinetic and hydraulic conditions.
\r\nThe negative pressure can be considered as the factor of both useful
\r\nand destroying energies. The new approach to generation of the
\r\nnegative pressure waves in impure, unclean fluids has allowed the
\r\ncreation of principally new energy saving technologies and
\r\ninstallations to increase the effectiveness and efficiency of different
\r\nproduction processes. It was proved that the negative pressure is one
\r\nof the main factors causing hard troubles in some technological and
\r\nnatural processes. Received results emphasize the necessity to take
\r\ninto account the role of the negative pressure as an energy factor in
\r\nevaluation of many transient thermohydrodynamic processes in the
\r\nNature and production systems.<\/p>\r\n","references":"[1] Hayward, A.T.J., 1971, \u201cNegative Pressure in Liquids: Can it be\r\nHarnessed Serve Man?\u201d, American Scientist, 59, 1971, pp.434-443.\r\n[2] Couzens D.C. and Trevena D.H., \u201cCritical Tension in a Liquid Under\r\nDynamic Conditions\u201d, 1969, Nature, 222, 437.\r\n[3] NATO Science Series, \u201cLiquids Under Negative Pressure\u201d, Edited by\r\nA.R. Imre, H.J. Maris, P.R. Williams, 2001.\r\n[4] Veliev F.H., \u201cAbout the Negative Pressure\u201d, Injenerno-Fizicheskiy\r\nJurnal (Engineering Physical Journal), 1983, 44, pp.242-244\r\n[5] Veliev F.H., Guliyev I.S., \u201cAbout Possible Role of Negative Pressure\r\nWaves in Geophysical Processes\u201d Applied Physics Research, 2014, vol.\r\n6, No 5.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 97, 2015"}