Numerical analysis of flow characteristics of Jeffery nanofluid past a moving plate in conducting field

2020 ◽  
Author(s):  
Baddela Hari Babu ◽  
P. S. Rao ◽  
S. V. K. Varma
Keyword(s):  
Numerical Analysis ◽  
Flow Characteristics ◽  
Moving Plate ◽  
Jeffery Nanofluid

scholarly journals Numerical Analysis of Flow Characteristics of Jeffery Nanofluid Past a Moving Plate in Conducting Field

2018 ◽  
Author(s):  
Pentyala Srinivasa Rao ◽  
Baddela Hari Babu ◽  
S V K Varma
Keyword(s):  
Porous Medium ◽  
Flow Characteristics ◽  
Governing Equations ◽  
Nanofluid Flow ◽  
Moving Plate ◽  
Local Skin ◽  
Local Skin Friction ◽  
The Impact ◽  
Jeffery Nanofluid ◽  
Stationary Plate

This paper reveals the physical properties of Jeffery nanofluid flow past a moving plate embedded in porous medium under the existence of radiation and thermal diffusion. The analysis is carried out in three cases of moving plate, namely stationary plate λ = 0, forth-moving plate λ = 1, back-moving plate λ = −1. Finite difference method is applied to solve the governing equations of the flow and pointed out the variations in velocity, temperature and concentration with the use of graphical presentations. The impact of several parameters on local skin friction, Nusselt number and Sherwood number is also noticed and discussed. Enhancement of velocity is observed under the impact of Jeffery parameter for the cases of stationary plate and back-moving plate, whereas reverse nature is found in the case of forth-moving plate. The velocity enhances as the values of porosity parameter increases for the case of stationary plate and forth-moving plate but a reverse nature is noticed in the case of back-moving plate.

Experimental and Numerical Analysis of Mixing Process of Two Component Gases in a Vertical Fluid Layer in a VHTR

2019 ◽  
Vol 5 (2) ◽  
Author(s):  
Tetsuaki Takeda
Keyword(s):  
High Temperature ◽  
Natural Convection ◽  
Numerical Analysis ◽  
Pressure Vessel ◽  
Storage Tank ◽  
Molecular Diffusion ◽  
Flow Characteristics ◽  
Mixing Process ◽  
Two Component ◽  
Air Ingress

When a depressurization accident of a very-high-temperature reactor (VHTR) occurs, air is expected to enter into the reactor pressure vessel from the breach and oxidize in-core graphite structures. Therefore, in order to predict or analyze the air ingress phenomena during a depressurization accident, it is important to develop a method for the prevention of air ingress during an accident. In particular, it is also important to examine the influence of localized natural convection and molecular diffusion on the mixing process from a safety viewpoint. Experiment and numerical analysis using a three-dimensional (3D) computational fluid dynamics code have been carried out to obtain the mixing process of two-component gases and the flow characteristics of localized natural convection. The numerical model consists of a storage tank and a reverse U-shaped vertical rectangular passage. One sidewall of the high-temperature side vertical passage is heated, and the other sidewall is cooled. The low-temperature vertical passage is cooled by ambient air. The storage tank is filled with heavy gas and the reverse U-shaped vertical passage is filled with a light gas. The result obtained from the 3D numerical analysis was in agreement with the experimental result quantitatively. The two component gases were mixed via molecular diffusion and natural convection. After some time elapsed, natural circulation occurred through the reverse U-shaped vertical passage. These flow characteristics are the same as those of phenomena generated in the passage between a permanent reflector and a pressure vessel wall of the VHTR.

Numerical Analysis of Flow Characteristics for Intake Valve Design

2003 ◽  
Author(s):  
Duk-Sang Kim ◽  
Yeun-Jun Yoo ◽  
Yong-Seok Cho ◽  
In-Yong Ohm
Keyword(s):  
Numerical Analysis ◽  
Flow Characteristics ◽  
Intake Valve ◽  
Valve Design

Numerical analysis of the effect of the contraction rate of the curved hopper on flow characteristics of the silo discharge

2019 ◽  
Vol 356 ◽  
pp. 858-870 ◽  
Author(s):  
Hanru Liu ◽  
Fuguo Jia ◽  
Yawen Xiao ◽  
Yanlong Han ◽  
Gengrun Li ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Flow Characteristics ◽  
Contraction Rate ◽  
Silo Discharge
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