scholarly journals Solution of the conjugate problem of gas dynamics and heat transfer in structures with a large ratio of geometric scale values

2017 ◽  
pp. 69-74
Author(s):  
D. A. Romanyuk ◽  
S. V. Panfilov ◽  
D. S. Gromov
Keyword(s):  
Gas Dynamics ◽  
Software Package ◽  
Thermal State ◽  
Mathematical Formulation ◽  
Research Work ◽  
Conjugate Problem ◽  
Thermal Processes ◽  
Ansys Fluent ◽  
Fluent Software ◽  
Volume Method

Within the scope of the research work, we have developed the methods and software package for solving the conjugate heat and hydraulic problems based on the classical approach to performing hydraulic calculations and modeling thermal processes by means of the finite volume method in the ANSYS Fluent software package. The developed means allowed us to efficiently calculate the thermal state of complex technical objects. The study gives mathematical formulation of the methods and suggests the results of their approbation and verification

Numerical study of the ejection properties of a jet flowing into flooded space

2020 ◽  
Author(s):  
A.Yu. Lutsenko ◽  
V.A. Kriushin
Keyword(s):  
Pressure Distribution ◽  
Nozzle Exit ◽  
Software Package ◽  
Numerical Study ◽  
Supersonic Jet ◽  
Underlying Surface ◽  
Ansys Fluent ◽  
Fluent Software ◽  
Underexpanded Supersonic Jet ◽  
Jet Axis

The purpose of the study was to carry out a numerical simulation of the interaction of an underexpanded supersonic jet flowing into a flooded space with a normally located obstacle, and with the underlying surface. We performed the calculations in the ANSYS Fluent software package and presented flow patterns. For the case when the obstacle is located normally to the axis of the jet, we compared the pressure distribution in the radial direction with experimental data and made a conclusion about the changes in the integral load on the wall with a change in the distance to the nozzle exit. For the case when the obstacle is parallel to the jet axis, we presented the pressure distribution along the wall in the plane of symmetry, estimated the relative net force acting on the underlying surface, analyzed the nature of its change at various values of the off-design coefficient, the Mach number on the nozzle exit and the distance to the jet axis.

scholarly journals Collecting finely-dispersed particles from the gas flow in a centrifugal separator with coaxially arranged pipes

2020 ◽  
Vol 315 ◽  
pp. 03003
Author(s):  
Vadim E. Zinurov ◽  
Oksana S. Dmitrieva ◽  
Oksana S. Popkova
Keyword(s):  
Numerical Simulation ◽  
Pressure Loss ◽  
Software Package ◽  
Gas Flow ◽  
Scientific Paper ◽  
Centrifugal Separator ◽  
Centrifugal Forces ◽  
Ansys Fluent ◽  
Dispersed Particles ◽  
Fluent Software

The article deals with the problem of increasing the efficiency of dedusting the gas flow from the finely dispersed particles smaller than 10 μm. In order to solve this problem, a design of centrifugal separator with coaxially arranged pipes is proposed. The described principle of operation includes the large values of centrifugal forces, which take place inside the device when the flow is swirled, and these forces throw the finely dispersed particles to the walls of device. This scientific paper shows a numerical simulation of gas flow dedusting process by means of ANSYS Fluent software package. The efficiency of dedusting the gas from the finely dispersed particles of up to 10 μm in the device is on average within the range of 53.8–76.7%. The exponential function, describing the changes in the pressure loss from the input gas rate, is obtained. In the course of studies, it was found that the pressure loss in the device is not more than 800 Pa at the input gas rate from 3 to 19 m/s.

Optimization for the Air-Pod Shape

2011 ◽  
Vol 308-310 ◽  
pp. 136-141
Author(s):  
Yan Chao Qiao ◽  
Zi Qi Guo ◽  
Bao Gang Zhang ◽  
Yao Lin Shi
Keyword(s):  
Experimental Data ◽  
Comparative Analysis ◽  
Wind Tunnel ◽  
Software Package ◽  
Program Assessment ◽  
Ansys Fluent ◽  
Fluent Software ◽  
Side Face ◽  
Wall Shear ◽  
D Model

in order to optimize the air-pod shape, this paper details work conducted using the commercial CFD software package ANSYS: Fluent to simulate the aerodynamic of air-pod. In our research, the results as followed: 1) In the benchmark, our comparative analysis of the flow over the NASA 0012 airfoil from the Experimental Data Base for Computer Program Assessment (AGARD-AR-138, 1979) implies that the ANSYS: Fluent software package numerical method simulates the airfoil viscous flow with the same accuracy as the wind-tunnel experiment. We can use it to finish our research. 2) We build the 3-D model to compute the aerodynamic of the air-pod. We choose the cylinder at first step. From the results we can see the pressure and wall shear concentrate at the side face of the cylinder. The pressure at the side faces is about twice than the direct side. Next step we will compute different models, such as spherical and drop-shaped, et al. then we can compare the pressure and wall shear field value for different models at different conditions. This work gives us best way to optimize the aerodynamic shape of air-pod.

Numerical simulation of a flow past a triangular sail-type blade of a wind generator using the ANSYS FLUENT software package

2016 ◽  
Vol 61 (2) ◽  
pp. 299-301
Author(s):  
K. Kusaiynov ◽  
N. K. Tanasheva ◽  
L. L. Min’kov ◽  
B. R. Nusupbekov ◽  
Yu. O. Stepanova ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Software Package ◽  
Ansys Fluent ◽  
Wind Generator ◽  
Flow Past ◽  
Fluent Software

scholarly journals Modeling and Simulation of the Methane Risk in the Mining Production Process

2021 ◽  
Vol 4 (1) ◽  
pp. 1-13
Author(s):  
Dorota Palka
Keyword(s):  
Production Process ◽  
Mining Area ◽  
Hard Coal ◽  
Coal Seams ◽  
Ansys Fluent ◽  
Model Studies ◽  
Simulation Based ◽  
Huge Impact ◽  
Fluent Software ◽  
Volume Method

Abstract The mining production process is of particular importance for the area of Upper Silesia, as well as a very significant impact on the economy of the entire country. One of the most common and most dangerous threats to this process is the methane hazard. It is related to the presence of methane in coal seams, which under appropriate conditions is a flammable and explosive gas. Events related to the methane hazard constitute a huge threat to the life and health of the crew as well as the infrastructure and equipment of excavations. Therefore, they have a huge impact on the efficiency of the entire mining production process. In order to ensure the safety and continuity of the production process, it is necessary to prevent the formation of dangerous methane concentrations in the area covered by the operation. One of the tools that can be used to assess the state of methane hazard are model studies supported by numerical simulation. Based on these studies, the article analyzes the distribution of methane concentration in the mining area. This area included an actual mining excavation in one of the hard coal mines. The model tests were carried out with the use of the finite volume method in the ANSYS Fluent software. The obtained results can be used for preventive measures and constitute an important source of information for the assessment of the methane hazard state.

scholarly journals Comparison of 2D Grid Simulations for Flow Past Cylinder at High Reynolds Numbers

2019 ◽  
Vol 15 (1) ◽  
pp. 70-78 ◽  
Author(s):  
Lenka Lausová ◽  
Ivan Kološ ◽  
Vladimíra Michalcová
Keyword(s):  
Reynolds Numbers ◽  
Wake Region ◽  
Mean Velocity ◽  
Ansys Fluent ◽  
Flow Past ◽  
Different Types ◽  
Fluent Software ◽  
The Mean ◽  
High Reynolds ◽  
Volume Method

Abstract The paper focuses on the verification of the suitability of the SST k - ω model on the flow past a circular cylinder in 2D for a high Reynolds number. The study compares the results of drag and lifts coefficients with respect to different types of meshes and time steps. The mean velocity field in the wake region behind the cylinder is evaluated and compared to experimental data available from literature. The numerical simulations are solved using CFD codes in the ANSYS Fluent software and use the finite volume method.

scholarly journals Numerical Study of Laminar Forced Convection of Nanofluid in a New Microchannel Heat Sink

2021 ◽  
Vol 71 (2) ◽  
pp. 31-40
Author(s):  
Bouhabel Bourhane ◽  
Kabar Yassine
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Heat Sink ◽  
Numerical Study ◽  
Microchannel Heat Sink ◽  
Ansys Fluent ◽  
Mixing Chamber ◽  
Fluent Software ◽  
Volume Method ◽  
Laminar Forced Convection

Abstract The heat transfer and pressure drop in a microchannel heat sink with 02 mixing chambers with inclined walls were numerically studied. The transport equations have been resolved by the finite volume method using ANSYS Fluent software. The operating fluids are water and Al2O3-water. The results obtained for Reynolds numbers ranging from 187 and 705 show that adding a micro-mixing chamber with a rectangular rib in the microchannel improves the heat transfer and increases the pressure drop compared to conventional microchannels. The new shape of the mixing chamber studied shows a net decrease in pressure drop, which improves the performance of the micro heat sink by 5.6%.

Thermal Behavior of Different Cooling Towers Using Induced Draught Cross Flow

2018 ◽  
pp. 73-88
Author(s):  
Rafid Hannun ◽  
Muntadhar Selman
Keyword(s):  
Thermal Behavior ◽  
Cooling Tower ◽  
Water Pressure ◽  
Cross Flow ◽  
Electrical Energy ◽  
Ansys Fluent ◽  
Fluent Software ◽  
Volume Method ◽  
First Time ◽  
Electrical Energy Generation

Cooling tower is vastly utilized in industries as well as plants such electrical energy generation field and petrochemical industry to subtract the useless heat . In this paper, a thermal behavior of mechanical draft cross flow wet cooling tower is investigated .The theoretical study based on mathematical model of heat and mass transfer whose analyzed by ANSYS fluent software code employed workbench. Three new configurations of cooling tower are studied at the first time that didn’t studied together in literatures. They are cubic, cylindrical, and pyramid shape. The investigation used several inlet water temperature and different pressures of water at inlet and outlet. The numerical solution is based on the finite volume method. The wet bulb temperature of air has constant value for all cases whose studied . The results of study indicated that the cylindrical configuration is the best geometry. When inlet water pressure get up at constant other variables, the performance is decreased as well as it will improved if it reduces. The water cooling range has no influence on the tower characteristics.

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