Zobrazeno 1 - 10
of 61
pro vyhledávání: '"F. Numachi"'
Autor:
F. Numachi
Publikováno v:
Journal of Fluids Engineering. 97:180-190
It was proved experimentally that the conditions of cavitation incipience, such as the positions of incipient cavitation bubble formation and collapse, extent of cavitation, and the propensity toward cavitation onset (in terms of cavitation coefficie
Autor:
O. Klüsener, W. Gröbner, H. D. Baehr, H. W. Hahnemann, H. Leipholz, F. W. Riegels, H. Wichmann, O. Emersleben, F. Numachi, G. Vogelpohl, U. Neubert, F. W. Gundlach, W. Ackmann, F. J. Meister, W. Rehwald, C. E. Gerlach, Klaus Müller
Publikováno v:
Forschung im Ingenieurwesen. 32:28-32
Autor:
F. Numachi
Publikováno v:
Journal of Basic Engineering. 86:543-555
It has been demonstrated that profiles can be found which manifest extremely favorable characteristics when used as blade elements of a given cascade formation. The method of developing such profile forms is to begin by prescribing a suitable configu
Autor:
F. Numachi
Publikováno v:
Forschung auf dem Gebiete des Ingenieurwesens. 24:73-78
In teil I dieser Untersuchung wurden die Frequenzspektren der am Tragflugelprofil durch Kavitation entstehenden Ultraschallwellen untersucht. Weitere Versuche fuhrten nun dazu, auch den Einflus des statischen Drucks und der Temperatur des Wassers auf
Autor:
F. Numachi
Publikováno v:
Ingenieur-Archiv. 7:396-409
Autor:
F. Numachi
Publikováno v:
Journal of Basic Engineering. 89:201-209
As a sequel to the first and second reports of the present series of experiments intended to gain knowledge on the effect of surface roughness on hydromechanical characteristics, particularly cavitation performance, the author has this time taken up
Publikováno v:
Journal of Basic Engineering. 82:1-6
The object of this paper is to investigate the effects of cavitation on the discharge coefficient of sharp-edged orifice plates with reference to various degrees of cavitation as defined by a cavitation number. The experimental data described in this
Autor:
F. Numachi
Publikováno v:
Forschung auf dem Gebiete des Ingenieurwesens. 22:77-84
Autor:
F. Numachi
Publikováno v:
Journal of Basic Engineering. 81:153-162
In some cases during the experiments described in past reports [1, 2] which dealt with cavitation-induced ultrasonic shock waves, extremely anomalous values were obtained in the imparted pressure of the shock waves. The paper deals with an investigat
Autor:
F. Numachi
Publikováno v:
Journal of Fluids Engineering. 78:1735-1739
Cases occur in large water pumps, wherein, after installation, vibrations exceeding allowable limits are found to set in when starting up, and as a measure to meet such situations without resorting to reconstruction of the pump itself, a method of