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Numeberical Simulation of A New Enhanced Heat Transfer Burener Xiaofeng Lu a, Duo Liub , Yuanqing Lic School of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing ,China axflu@njut.edu.cn, bld.deyouxiang@163.com, cliyuanqing6666@163.com Keywords: Enhanced Heat Transfer Burner; Heating Furnace; PDF Model; Numerical Simulation Abstract: In this paper, numerical simulation of a new type enhanced heat transfer burner was carried out by using the CFD commercial software FLUENT.
A research indicated using numerical simulation (CFD) to optimize the design, the overall error can be controlled to bellow 5 percents[8].
This paper studied a new burner through the numerical simulation method(CFD).
Computational model was set up in commercial CFD software FLUENT version 6.3.26 by using its built-in sub models and algorithms.
FLUENT Fluid Engineering Simulation Calculation Examples and Application.

Numerical Simulation of the Influence of Deposits on Heat Transfer Process in a Heat Recovery Steam Generator Lin Mu1, a, Hongchao Yin1,b 1 School of Energy and Power Engineering, Dalian University of Technology, 116023, Dalian, China awwt650420@sina.com.cn, bhcyin@dlut.edu.cn Keywords: Numerical simulation, Heat transfer, Particle deposition, Deposits growth, CFD Abstract.
In the present work, an Eulerian- Lagrangian model based on Computational Fluid Dynamics (CFD) is implemented to simulation flue gas turbulent flow, heat transfer and the particle transport in the HRSG.
Both numerical simulation and field measurement identify that the deposits play an important role in the heat transfer in the HRSG.
Based on the numerical simulation and field measurement, the total heat transfer rate after one day reduces to 1780.45kW which is 72.32% of total heat transfer rate in the case of no particle deposition.
Both numerical simulation and field measurement identify that the deposits play an important role in the heat transfer in the HRSG.

This paper presents a CFD analysis on thermal comfort and indoor air quality affected by partitions in an air-conditioned building.
CFD experiments are carried out to simulate variables of indoor air before/after installation or removal of partitions.
Numerical simulations are carried out with case studies: a) library without partition and b) library with partition since the real installation of partitions in large indoor facilities may not be practical and economical.
Heat sources and other indoor entities are subsequently added to the CFD model.
Slight differences in values between simulation and experiment are recorded for air temperature, relative humidity and CO2 concentration but the maximum difference is below 10%.

Security Analysis on Single-screw Extrusion Process of Solid Propellant by Numerical Simulation Zhongqi HE1, a, Ke ZHOU1,b , Shupan YIN 1,c 1 School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China ahzq555@163.com (corresponding author), b411607149@qq.com, cpyshu@126.com Keywords: Single-screw Extrusion Process; Solid Propellant; Security Analysis; CFD; POLYFLOW.
In this paper, the CFD software, POLYFLOW, and a numerical simulation method were adopted to investigate the rheological parameters in single-screw extrusion process of solid propellant.
Thompson[4] studied numerical simulation.
In this paper, the CFD software, POLYFLOW, and the numerical simulation method were adopted to investigate the rheological parameters of material of the screw extrusion process，which provides a scientific and effective reference to the technological process control and safety analysis.
Discrete Particle Simulation of Solid Compaction and conveying in A Single-Screw Extruder[J].

Characteristics Analysis of Tire Hydroplaning Flow and Tread Design Influence Study Yang Jian*, Wang Guolin and Zhou Haichao School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China *email: yangjian@ujs.edu.cn Key words: tire hydroplaning; CFD; tire tread pattern; numerical simulation Abstract.
Aksenov et al [2], presented a three-dimensional simulation of the interaction between tire and free surface flow by virtual of Computational Fluid Dynamics (CFD) technology, but the deformation of tire surface was ignored and the computational domain remained fixed in time in his work.
Simulation results may vary by about 5%-10% with the computation domain size.
It is showed that CFD is an efficient tool in calculating and analyzing tire hydroplaning.
Numerical Simulation of Car Tire Aquaplaning[C].

In one stage, the pattern of WSS distribution changed strangely and the threshold image intensity value can result in reflective effects on CFD.
In order to perform modelling simulation, the selection of a grey-level threshold for vascular model generally used an automated method.
Computational fluid dynamics (CFD) analysis Blood flow through a cerebral aneurysm [2,9], assumed as incompressible.
Conclusion As a summary, the threshold image intensity values can profoundly affect to CFD analysis.
The development an extensive analysis of the numerical simulation may help to reduce the effect of the reconstructed geometry.

This work objectified to apply Computational Fluid Dynamics (CFD) on Bradley Hydrocyclone and compare the results from this technique to empirical models.
This work objectified to apply Computational Fluid Dynamics (CFD) on Bradley Hydrocyclone and compare the main results to Massarani's methodology [3].
Volume Fraction of Water (298.15 K) in the Bradley Hydrocyclone A value of 44% to underflow-to-throughput ratio was obtained for the CFD simulation while for the Massarani's Methodology the expected value was approximately 49%.
This result shows that this variable can be estimated successfully by CFD techniques.
Reduced Grade Efficiency (G') and Grade Efficiency (G) by Massarani's Methodology and CFD techniques.

From simulation results obtained: Water-based nano boron carbide has good transmission fluid performance when nanoparticles mass fraction of 0.8%.
In CFD pretreatment, using automatic mesh method and insert inflation method to encryption grid at fluid contact with the pipe.
Fig.2 Fluid mesh inside the U-shaped pipe Numerical simulation of the U-shaped tube κ-ε turbulence model.
Tab.1 Density and viscosity of water based B4C nano fluid B4C mass fraction(%) Dynamic viscosity (mPa∙s) Density (g/cm3) Kinematic viscosity (mm2/s) 0.6 15.8 0.916 17.2 0.8 14.8 0.922 16.1 1.0 16.9 0.915 18.5 Simulation results and discussion By the FLUENT solver, can be obtained simulation results processing in the CFD post-processing.
Calculated pressure value at points labeled 1, 2, 3, 4 using the Function Calculator four in CFD after processing, shown in table 2.

The aim of the article is to analyse in detail the air flow in a specific floor void with the aid of modern CFD programs and experimental measurements using the ALMEMO device.
CFD Flow Analysis in the Vicinity of Modern Air Insulation Form Pieces The measurement results show that flow occurs under normal annual conditions when using air insulation.
We carried out a flow simulation in the air insulation void using the CFD method in the Ansys Fluent program.
The CFD method proved that air insulations have a positive influence on the uniform air flow agitation in the void.
The given results will continue to be collected and assessed with the data obtained from the CFD computer simulation.

Multiphase-flow simulation is utilized.
The CFD results are compared with the experiment of water soot blower shooting in Cold Air Velocity Test (CAVT) conditions.
Results and Discussion Velocity Field in Simulation Domain.
Due to the velocity of airflow is not enough to change the direction of water trajectory (it is only 5-6 m/s). 2.When comparing simulation results to experimental data, the maximum tolerance is 9.4% is considered an acceptable value. when applying the results of CFD modeling to actual operation.
Li, “Study on the slagging trends of the pre-combustion chamber in industrial pulverized coal boiler under different excess air coefficients by CFD Numerical Simulation,” Energy, vol. 264, p. 126184, 2023