NUMERICAL SIMULATION OF JET FLOW ISSUED INTO DENSITY-STRATIFIED FLUID BY VORTEX IN CELL METHOD

2014 ◽  
Vol 17 (1) ◽  
pp. 115-134 ◽  
Author(s):  
Shogo Shakouchi ◽  
Seiji Shimada ◽  
Tomomi Uchiyama
Keyword(s):  
Numerical Simulation ◽  
Jet Flow ◽  
Stratified Fluid ◽  
Cell Method

0513 Numerical Simulation of Jet Flow Issued into Density-Stratified Fluid

2014 ◽  
Vol 2014 (0) ◽  
pp. _0513-1_-_0513-2_
Author(s):  
Shogo SHAKOUCHI ◽  
Tomomi UCHIYAMA ◽  
Seiji SHIMADA
Keyword(s):  
Numerical Simulation ◽  
Jet Flow ◽  
Stratified Fluid

Numerical Simulation of Three-Dimensional Trailing Vortex Evolution in Stratified Fluid

AIAA Journal ◽  
10.2514/2.468 ◽  
1998 ◽  
Vol 36 (6) ◽  
pp. 981-985 ◽  
Author(s):  
Robert E. Robins ◽  
Donald P. Delisi
Keyword(s):  
Numerical Simulation ◽  
Three Dimensional ◽  
Stratified Fluid

scholarly journals A theoretical model of a wake of a body towed in a stratified fluid at large Reynolds and Froude numbers

2006 ◽  
Vol 13 (3) ◽  
pp. 247-253 ◽  
Author(s):  
Y. I. Troitskaya ◽  
O. A. Druzhinin ◽  
D. A. Sergeev ◽  
V. V. Papko ◽  
G. N. Balandina
Keyword(s):  
Experimental Data ◽  
Theoretical Model ◽  
Momentum Transfer ◽  
Hydrodynamic Instability ◽  
Jet Flow ◽  
Stratified Fluid ◽  
Turbulent Jet ◽  
Wake Flow ◽  
Mean Flow ◽  
Turbulent Jet Flow

Abstract. The objective of the present paper is to develop a theoretical model describing the evolution of a turbulent wake behind a towed sphere in a stably stratified fluid at large Froude and Reynolds numbers. The wake flow is considered as a quasi two-dimensional (2-D) turbulent jet flow whose dynamics is governed by the momentum transfer from the mean flow to a quasi-2-D sinuous mode growing due to hydrodynamic instability. The model employs a quasi-linear approximation to describe this momentum transfer. The model scaling coefficients are defined with the use of available experimental data, and the performance of the model is verified by comparison with the results of a direct numerical simulation of a 2-D turbulent jet flow. The model prediction for the temporal development of the wake axis mean velocity is found to be in good agreement with the experimental data obtained by Spedding (1997).

Numerical Simulation of Mixed Emulsion Explosive Charging in Water-Filled-Hole

2013 ◽  
Vol 634-638 ◽  
pp. 3563-3566
Author(s):  
Hai Wang Ye ◽  
Dong Ling Nong ◽  
Ting Li ◽  
Jie Wang Ye
Keyword(s):  
Numerical Simulation ◽  
Water Column ◽  
Water Depth ◽  
Jet Flow ◽  
Hole Diameter ◽  
Water Levels ◽  
Effective Range ◽  
Emulsion Explosive ◽  
Hole Bottom

When charging in water-filled-hole with emulsion mixed loading truck, if the charging hose can not reach the borehole bottom, there will be a water column in the charge. Emulsion explosive charging in water-filled-hole is simulated under three conditions with different water levels, charging velocity and hole diameter when the hose of the explosive mixed loading truck does not reach the hole bottom. The results show that explosive can not reach the bottom of the blasthole if the water depth exceeds the maximum effective range of the jet flow, which is proportional to charging speed and hole diameter, and there will exist a water column at the bottom of the hole. To prevent that, the distance between the hose outlet and the hole bottom must be shorter than the effective range when charging. Besides, increasing charging velocity also works.

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