Numerical study on the flow over two circular disks in tandem arrangement

2019 ◽  
Vol 31 (3) ◽  
pp. 034102 ◽  
Author(s):  
Minghou Liu ◽  
Chen Xie ◽  
Jianzhi Yang ◽  
Xiaowei Zhu ◽  
Mengyun Yao
Keyword(s):  
Numerical Study ◽  
Tandem Arrangement ◽  
Circular Disks

scholarly journals Numerical study on phase change of water flowing across two heated rotating circular cylinders in tandem arrangement

2016 ◽  
Vol 8 (4) ◽  
pp. 201-212
Author(s):  
BK Dhar ◽  
SK Mahapatra ◽  
SK Maharana ◽  
A Sarkar ◽  
SS Sahoo
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Phase Change ◽  
Numerical Study ◽  
Heat Transfer Analysis ◽  
Circular Cylinders ◽  
Transfer Coefficients ◽  
Tandem Arrangement ◽  
Flow And Heat Transfer ◽  
An Array Of Cylinders

The problems of fluid flow and heat transfer phenomena over an array of cylinders are quite prominent in fluid dynamics and industry applications. The current work focuses on fluid flow and heat transfer analysis over two heated rotating cylinders arranged in tandem. The flow of water over heated cylinders faces a phenomenon of phase change from liquid (water) to vapor phase (steam). The mechanism of this phase change is studied through a numerical simulation supplemented with verification of the code and validation. The problem is simulated when flows from two cylinders in a tandem arrangement become interacting and non-interacting. The Eulerian model is used during simulation to comprehend the multiphase phenomena. The volume fractions of both the phases such as water and vapor and heat transfer coefficients of both the cylinders have been computed and presented as findings of the problem. The mass and heat transfer mechanism is unidirectional from one phase to the other phase. The vapor fraction of each phase is to be observed and compared when three different rotations are given to the two cylinders immersed in a turbulent flow of water.

Numerical Study on Flow around Three Circular Piers in Tandem Arrangement at a Supercritical Reynolds Number

2012 ◽  
Vol 170-173 ◽  
pp. 1932-1937
Author(s):  
Peng Hao ◽  
Guo Dong Li ◽  
Lan Yang ◽  
Gang Chen
Keyword(s):  
Reynolds Number ◽  
Numerical Study ◽  
Fluid Dynamic ◽  
Two Dimensional ◽  
Lateral Loads ◽  
Dynamic Design ◽  
Tandem Arrangement ◽  
Dynamic Forces ◽  
Les Model ◽  
Supporting Structures

As the support structures of building for crossing river, piers of bridge and/or aqueduct are generally arranged in tandem along the river direction, the fluid dynamic forces are main lateral loads acting on the Piers. Two-dimensional fluid computations have been performed using LES model to investigate the flows around three circular piers in tandem arrangements at a supercritical Reynolds number, Re =8.76×106. Both center-to-center spaces are L/D=2.6. The flows and fluid-dynamic forces obtained from the simulations are analyzed. The results can provide the basis for the dynamic design of the supporting structures of the aqueducts.

Numerical Study of Wind Flow around Two High-Rise Buildings in Tandem Arrangement Using Lattice Boltzmann Method

2012 ◽  
Vol 174-177 ◽  
pp. 3069-3073
Author(s):  
Wei Zhang ◽  
Xiang Cui Lv ◽  
Dian Xin Zhang
Keyword(s):  
Lattice Boltzmann Method ◽  
Wind Velocity ◽  
Lattice Boltzmann ◽  
Numerical Study ◽  
Residential Buildings ◽  
Low Velocity ◽  
Tandem Arrangement ◽  
High Rise ◽  
Formation And Evolution ◽  
Boltzmann Method

The wind environment around two high-rise buildings in tandem arrangement at a Reynolds number of 1 000 were investigated using the lattice Boltzmann method. The numerical simulation results reveal some meaningful regularitiess about the formation and evolution of the complex vortex system around the high-rise buildings. A periodicity phenamenon in the process of the vortex evolution were observed in the numerical simulations. The space between the two buildings is nearly a silent regime with very low velocity, and this is disadvantageous for the transport and dilution of the pollutants. Wind velocity above the front building is relatively large and the maximum wind velocity is approximate 3.0 times the incoming wind velocity. These numerical results can be used in layout planning of high-rise residential buildings to create better environment for the purpose of ventilation and utilization of wind energy in urban area.

Numerical Study on Phase Change of Water Flowing Across Two Heated Circular Cylinders in Tandem Arrangement

2016 ◽  
Vol 46 (7) ◽  
pp. 656-680
Author(s):  
B.K. Dhar ◽  
S.K. Mahapatra ◽  
S.K. Maharana ◽  
A. Sarkar ◽  
S.S. Sahoo
Keyword(s):  
Phase Change ◽  
Numerical Study ◽  
Circular Cylinders ◽  
Tandem Arrangement

Numerical study of the low-frequency atomic dynamics in a Lennard-Jones glass

1998 ◽  
Vol 77 (2) ◽  
pp. 473-484 ◽  
Author(s):  
M. Sampoli, P. Benassi, R. Dell'Anna,
Keyword(s):  
Numerical Study ◽  
Low Frequency ◽  
Lennard Jones
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