@inproceedings{oai:ynu.repo.nii.ac.jp:00003787, author = {Abe, Heishiro and Matsumoto, Kazunari and Kurokawa, Junichi and Matsui, Jun and Choi, Young-Do}, book = {Proceedings of the 23rd IAHR Symposium on Hydraulic Machinery and Systems, Yokohama, October 2006}, month = {}, note = {application/pdf, In order to control and balance axial thrust of turbo machine, many types of balancing devices are used but most of them are complicated and sometimes cause troubles. In this study, a very simple device of using shallow grooves mounted on a casing wall, known as "J-Groove", is proposed and studied experimentally and theoretically. The result shows that 70% of axial thrust in an industry, 4-stage centrifugal pump can be reduced at the best efficiency point. Moreover, the analytical method of "interfered gap flow" is established and a simple formula which can determine the optimum dimension of groove and its location is proposed.}, publisher = {International Association of Hydraulic Research (IAHR)}, title = {Analysis and Control of Axial Thrust in Centrifugal Pump by Use of J-Groove}, year = {2006} }