Variable Time Steps for Simulating Transient Liquid Flow by Method of Characteristics

1977 ◽  
Vol 99 (1) ◽  
pp. 259-261 ◽  
Author(s):  
A. K. Trikha
Keyword(s):  
Liquid Flow ◽  
Method Of Characteristics ◽  
Variable Time

An Efficient Method for Simulating Frequency-Dependent Friction in Transient Liquid Flow

1975 ◽  
Vol 97 (1) ◽  
pp. 97-105 ◽  
Author(s):  
A. K. Trikha
Keyword(s):  
Liquid Flow ◽  
Method Of Characteristics ◽  
Computation Time ◽  
Approximate Expression ◽  
Test System ◽  
Exact Expression ◽  
Frequency Dependent ◽  
Efficient Procedure ◽  
Liquid Line ◽  
Frequency Domains

An efficient procedure is developed for simulating frequency-dependent friction in transient laminar liquid flow by the method of characteristics. The procedure consists of determining an approximate expression for frequency-dependent friction such that the use of this expression requires much less computer storage or computation time than the use of the exact expression. The derived expression for frequency-dependent friction approximates the exact expression very well in both time and frequency domains. Calculated results for a test system are compared with the experimental results so show that the approximate expression predicts accurately the surge pressures, pressure wave distortion as well as pressure attenuation in a liquid line.

Vortex Precession in a Gas-Liquid Flow

2010 ◽  
Vol 41 (4) ◽  
pp. 465-478 ◽  
Author(s):  
S. I. Shtork ◽  
Sergei Alekseenko ◽  
V. L. Okulov ◽  
P. A. Kuibin
Keyword(s):  
Liquid Flow ◽  
Vortex Precession ◽  
Gas Liquid Flow
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