Effects of Temperature on Cavitation Erosion of Pure Titanium by a Rotating Disk Method in Seawater

2003 ◽  
Vol 2003 (0) ◽  
pp. 715-716
Author(s):  
Hiromi MOCHIZUKI ◽  
Motohiro YOKOTA ◽  
Shuji HATTORI
2010 ◽  
Vol 132 (11) ◽  
Author(s):  
A. Arikoglu ◽  
G. Komurgoz ◽  
I. Ozkol ◽  
A. Y. Gunes

The present work examines the effects of temperature and velocity jump conditions on heat transfer, fluid flow, and entropy generation. As the physical model, the axially symmetrical steady flow of a Newtonian ambient fluid over a single rotating disk is chosen. The related nonlinear governing equations for flow and thermal fields are reduced to ordinary differential equations by applying so-called classical approach, which was first introduced by von Karman. Instead of a numerical method, a recently developed popular semi numerical-analytical technique; differential transform method is employed to solve the reduced governing equations under the assumptions of velocity and thermal jump conditions on the disk surface. The combined effects of the velocity slip and temperature jump on the thermal and flow fields are investigated in great detail for different values of the nondimensional field parameters. In order to evaluate the efficiency of such rotating fluidic system, the entropy generation equation is derived and nondimensionalized. Additionally, special attention has been given to entropy generation, its characteristic and dependency on various parameters, i.e., group parameter, Kn and Re numbers, etc. It is observed that thermal and velocity jump strongly reduce the magnitude of entropy generation throughout the flow domain. As a result, the efficiency of the related physical system increases. A noticeable objective of this study is to give an open form solution of nonlinear field equations. The reduced recurative form of the governing equations presented gives the reader an opportunity to see the solution in open series form.


2012 ◽  
Vol 238 ◽  
pp. 153-156 ◽  
Author(s):  
Daniel Dobiáš

The paper introduces the rotating disk method, its features and the scope of application. It also describes the application of this technique in the research of corrosion of cement-based materials caused by aggressive liquid solutions and the effect of flow of solutions on the corrosion rate


Wear ◽  
1996 ◽  
Vol 194 (1-2) ◽  
pp. 149-155 ◽  
Author(s):  
J. Zhang ◽  
M.O.W. Richardson ◽  
G.D. Wilcox ◽  
J. Min ◽  
X. Wang

2018 ◽  
pp. 29-32
Author(s):  
D. S. Reutov ◽  
◽  
B. D. Khalezov ◽  
L. A. Ovchinnikova ◽  
A. S. Gavrilov ◽  
...  

1976 ◽  
Vol 55 (3) ◽  
pp. 496-505 ◽  
Author(s):  
Maw-Sheng Wu ◽  
William I. Higuchi ◽  
Jeffrey L. Fox ◽  
Michael Friedman

The dissolution rates of synthetic hydroxyapatite pellets under sink conditions were measured using the rotating disk method. The experimental data were analyzed by means of a physical model that yielded an ionic activity product of KHAP = a10 Ca2+ a6 PO4 3- a2OH- = 1 × 10-124.5±1.0 that was found to govern the dissolution reaction. Also, a surface resistance factor of k' equal to about 174 sec/cm was deduced from the data.


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