Two-dimensional full particle simulation of the flow patterns in the scrape-off-layer plasma for upper- and lower-null point divertor configurations in tokamaks

2009 ◽  
Vol 49 (7) ◽  
pp. 075038 ◽  
Author(s):  
T. Takizuka ◽  
K. Shimizu ◽  
N. Hayashi ◽  
M. Hosokawa ◽  
M. Yagi
Keyword(s):  
Flow Patterns ◽  
Null Point ◽  
Particle Simulation ◽  
Two Dimensional

DISCRETE PARTICLE SIMULATION OF FLOW PATTERNS IN TWO-DIMENSIONAL GAS FLUIDIZED BEDS

1993 ◽  
Vol 07 (09n10) ◽  
pp. 1889-1898 ◽  
Author(s):  
T. TANAKA ◽  
T. KAWAGUCHI ◽  
Y. TSUJI
Keyword(s):  
Flow Pattern ◽  
Gas Flow ◽  
Distinct Element ◽  
Flow Patterns ◽  
Particle Simulation ◽  
Two Dimensional ◽  
Particle Mixing ◽  
Central Nozzle ◽  
Discrete Particle Simulation ◽  
Gas Fluidized Beds

The flow patterns in two-dimensional gas fluidized bed were simulated numerically by the Distinct Element Method, Gas is issued through the entire width of the base with uniform velocity. Several flow patterns, such as slugging and bubbling, are observed in the results. As the gas flow rate increases, the flow pattern changes from slugging to bubbling. It is confirmed that particle mixing is promoted by bubbling. The flow pattern of bubbling is irregular in comparison with the case of gas injection through a central nozzle which was simulated in our previous study.

scholarly journals Flow patterns of shallow Palic Lake induced by the dominant winds

2012 ◽  
Vol 10 (1) ◽  
pp. 55-67
Author(s):  
Ljubomir Budinski ◽  
Djula Fabian
Keyword(s):  
Numerical Model ◽  
Flow Pattern ◽  
Coriolis Force ◽  
Wind Direction ◽  
Driving Forces ◽  
Open Water ◽  
Flow Patterns ◽  
Two Dimensional ◽  
Lake Model ◽  
Double Gyre

Studies of lake currents have highlighted that in case of stagnant waters winds are the dominant driving forces. This study is dealing with the influence of dominant winds on the flow pattern of Palic Lake. Action of steady winds of different directions has been tested on the lake by means of a two dimensional numerical model, while in addition to winds all other permanent factors like actual bathymetry, inflow and outflow as well the Coriolis force have been accounted for. The experiments have revealed that winds of different directions created corresponding characteristic flow patterns (in base plot), which were similar in cases of winds having opposite directions. However, in such cases the direction of flow was opposite. Moreover, the Palic Lake model produced the well known double-gyre flow pattern: in the coastal strip the direction of the current corresponded to the wind direction, while it was opposite in the domain of open water.

scholarly journals Laminar Flow Patterns in Two Dimensional, Suddenly Expanded Conduits and Influence of Temperature on Them

1979 ◽  
Vol 22 (166) ◽  
pp. 537-543
Author(s):  
Akiharu MITSUNAGA ◽  
Kojiro TAKAGISHI ◽  
Toshihiro ENDO ◽  
Tatsuzo HIROSE
Keyword(s):  
Laminar Flow ◽  
Flow Patterns ◽  
Two Dimensional ◽  
Influence Of Temperature ◽  
Influence Of Temperature On

An Experimental Investigation of the Transitory Stall Regime in Two-Dimensional Diffusers

1974 ◽  
Vol 96 (1) ◽  
pp. 11-15 ◽  
Author(s):  
C. R. Smith ◽  
S. J. Kline
Keyword(s):  
Experimental Investigation ◽  
Flow Behavior ◽  
Flow Patterns ◽  
Two Dimensional ◽  
Stall Inception ◽  
The Mean ◽  
Mach Numbers ◽  
Total Angle

A study of flow behavior of transitory stall in two-dimensional diffusers at low Mach numbers is reported. The changes in flow patterns from stall inception to full-stall are described; the geometries for maximum fluctuations are located. The mean times and distribution of stall build-up and wash-out periods are given for a series of units of varying total angle. The mean times are found to scale on total stall volume, and a nondimensional correlation of stall period is given. The distribution of stall periods, for random inlet fluctuations, is found to be broad and strongly skewed toward lower periods. Comparable results are found in water for R∼104 and in air at R∼105. A further series of tests with periodic inlet disturbances indicates that the stall behavior is modified strongly when the pulsing period is 0.5 to 1.0 times the natuarl mean period, but not otherwise. Details of flow patterns and blockage are summarized.

Flow patterns and wall stresses in a two‐dimensional bin with an obstacle

2006 ◽  
Vol 29 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Chuen‐Shii Chou ◽  
Chun‐Yuan Tseng ◽  
Tsung‐Ling Yang
Keyword(s):  
Flow Patterns ◽  
Two Dimensional

An upscale theory of particle simulation for two-dimensional quasi-static problems

2007 ◽  
Vol 72 (4) ◽  
pp. 397-421 ◽  
Author(s):  
Chongbin Zhao ◽  
B. E. Hobbs ◽  
A. Ord ◽  
Shenglin Peng ◽  
Liangming Liu
Keyword(s):  
Particle Simulation ◽  
Two Dimensional
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