Computation of fields and inductance using a three‐dimensional boundary‐element technique (abstract)

1990 ◽  
Vol 67 (9) ◽  
pp. 5834-5834
Author(s):  
M. Shah ◽  
S. Salon ◽  
P. Wendling
Keyword(s):  
Boundary Element ◽  
Three Dimensional ◽  
Dimensional Boundary ◽  
Element Technique ◽  
Boundary Element Technique

Dynamical Interactions in a Multi-Bubble Cloud

1992 ◽  
Vol 114 (4) ◽  
pp. 680-686 ◽  
Author(s):  
Georges L. Chahine ◽  
Ramani Duraiswami
Keyword(s):  
Numerical Simulation ◽  
Numerical Experiments ◽  
Three Dimensional ◽  
Analytical Technique ◽  
Bubble Cloud ◽  
Void Fractions ◽  
Dimensional Boundary ◽  
Element Technique ◽  
Domain Of Validity ◽  
Boundary Element Technique

Results of studies on the dynamics of “clouds” of bubbles via both an analytical technique using asymptotic expansions, and via numerical simulation using a three-dimensional boundary element technique (BEM) are reported. The asymptotic method relies on the assumption that the characteristic bubble size is much smaller than the characteristic inter-bubble distance. Results obtained from the two methods are compared, and are found to agree in the domain of validity of the asymptotic technique, which is for very low void fractions. Next, results of several numerical experiments conducted using the BEM algorithm are reported. The results indicate the influence of the mutual interaction on the dynamics of multiple bubble clouds.

scholarly journals Boundary element method for internal axisymmetric flow

1999 ◽  
Vol 5 (1) ◽  
pp. 55-81
Author(s):  
Alexander Gokhman ◽  
Dmitry Gokhman
Keyword(s):  
Boundary Element ◽  
Axisymmetric Flow ◽  
Three Dimensional ◽  
Velocity Fields ◽  
Fast Method ◽  
Dimensional Problem ◽  
Practical Application ◽  
Element Technique ◽  
Conditions At Infinity ◽  
Boundary Element Technique

We present an accurate fast method for the computation of potential internal axisymmetric flow based on the boundary element technique. We prove that the computed velocity field asymptotically satisfies reasonable boundary conditions at infinity for various types of inlet/exit. Computation of internal axisymmetric potential flow is an essential ingredient in the three-dimensional problem of computation of velocity fields in turbomachines. We include the results of a practical application of the method to the computation of flow in turbomachines of Kaplan and Francis types.

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