Search results

CFD simulation was employed to gain an understanding of the performance of the turbulent aggregation device.
Results and Discussion A 2-D CFD model was developed according to Fluent and the above equations.
Numerical Simulation for the Flow Field of the Coagulation Device for Ultrafine Particles[C].
Simulation for the Flow Field of Cylindrical Pipe with Different Shape[C].
Simulation for the Flow Field of Cylindrical Pipes Connected in Parallel with Different Distance[C].

On the building Panorama City was realized a wind study by using CFD simulation software OpenFOAM.
The values of the external wind pressure coefficients Cpe calculated by using CFD simulation at various wind directions were summarized in Table 1.
External pressure coefficients from CFD simulation.
Wind direction External pressure coefficients Cpe [-] 0° 45° 90° 135° 180° Minimum -2.88 -2.44 -3.85 -2.96 -2.80 Maximum 1.82 1.71 2.37 2.46 2.95 The results obtained from the CFD simulation were compared with wind tunnel data.
Blocken, CFD simulation of wind-induced pressure coefficients on buildings with and without balconies: Validation and sensitivity analysis, Build.

In this sense, the computational fluid dynamic (CFD) technique has been used with great success in predicting complex physical problems.
It was built using the ANSYS ICEM® CFD software and contains 1974620 elements, obtained after several refinements.
Fluid physical properties and simulation procedure.
In the transient process a time step Δt= 0.05s and a total simulation time of 300s were used.
Oliveira, Applying CFD in Manufacturing of Polymer Composite Reinforced with Shape Memory Alloy via Resin Transfer Molding Process, Int.

Adhesive, Annual Duration Series, Ball Packing, Capillary Absorption, CFD Simulation, Circular Thin Plates, Compliance Management, Compliance Requirements, Composite Patch, Concentration, Crack, CVD Coating Carbide Insert, Cycle Time, Cycloconverter, Damaged, Driver Assistance System, Elastic Constants, Electric Vehicle, Epoxy Granite, Fatigue Parameter, Gauge Station, Half-Elliptical, Heat Transfer, Intensity Factor, Jaya Optimization Algorithm, Laminar Flow, Load Frequency Control (LFC), Low Cycle Fatigue, Model Predictive Control (MPC), Multi-Area Power System, Multicellular, Natural Convection, Partial Duration Series, Performance Evaluation, Rainfall Intensity, Recording Station, Rectification, Road Profile, Sector Finite Element, Sediment, Stabilized Soil Blocks, State of Charge (SOC), Steel Reinforcement, Strain Based Approach, Temperature, Thermo-Physical Properties, Vehicle Dynamics, Water Resources

Numerical wind tunnel technology is the method to use of computational fluid dynamics (CFD) method to simulate the wind field around the structure change on the computer and calculate wind load on the surface of the structure.
Wei Xu[8]explore the feasibility of CFD numerical simulation average wind pressure on complex shape building surface through the numerical simulation research, puts forward the grids method to reduce the workload of modeling multiple wind direction angle effectively.
Main time domain simulation method are the linear filtering method, harmonic superposition method simulation and inverse Fourier transform method and wavelet analysis.
Many domestic scholars combinate them together for many improved methods and apply it to the structure to get the wind speed time history simulation program.
Simulation according to the actual wind environment can avoid the deficiency of the wind tunnel test.

Numerical simulation using computational fluid dynamics (CFD) has recently made significant progress in simulating downbursts.
In this paper, transient simulation of a three-dimensional moving downburst was studied using computational fluid dynamics simulation method.
Transient simulation of a three-dimensional moving downburst was conducted using time-filtered Reynolds Averaged Navier-Stokes (RANS) numerical simulation method.
Numerical simulation method Wind field model.
Numerical Simulations of an Isolated Microburst.

Impact of Different Turbulence Models on Air Pollutant Flow and Distribution Peng Wang* , Hailin Mu Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, Liaoning 116023, China *email: energyx@qq.com Keywords: Numerical Simulation; Urban Street Canyon; Canyon Aspect Ratio; Pollutant Dispersion; Computational Fluid Dynamics (CFD).
Although many wind tunnel simulations of flow around isolated buildings have been validated by on site measurements, the extremely small number of in street detailed flow structure measurements allows only very partial validation of the simulations.
Recently, the Computational Fluid Dynamics (CFD) approaches have been increasingly used to simulate the flow development and pollutant dispersion in street canyons.
�umerical Simulations Methods Model Domain.
CFD modeling is based on the numerical solution of the governing fluid flow and dispersion equations, which are derived from basic conservation and transport principle.

The results show that computational fluid dynamics (CFD) is capable in predicting the compressor performance.
Based on previous study, computational approach on NASA 35 axial compressor is utilized, to further verify the reliability of CFD method for turbo machinery study.
A low under relaxation factor value and small courant number are applied at the start of simulation to aid convergence.
Herrick, Prestall Behavior of a Transonic Axial Compressor Stage via Time-Accurate Numerical Simulation.
Wood, Recommendations for achieving accurate numerical simulation of tip clearance flows in transonic compressor rotors.

The computation model of flow and heat transfer process in APU compartment are setup by commercial CFD software Fluent, Realizable k-ε turbulent model and S2S thermal radiation model are used, and the flow field, temperature and heat flow information are acquired.
The main objective of APU compartment thermal management system is to calculate and analyze the temperature and heat flux distribution of the APU compartment and the main impact factor, and provide a reference for system and structure design, to achieve reasonable cooling of the various components and assemblies, and maintain accessory such as generators, cooling systems, controller and the overall have best performance in the optimum working temperature conditions, at the same time maintain a reasonable temperature of APU compartment structure, improve service life and ensure safety of the APU and the aircraft operation[1]. 1 CFD simulation process of APU compartment 1.1 Flow and heat transfer in APU compartment In this paper, in order to calculate the APU compartment temperature and heat flow and analyse the heat transfer process, take an APU compartment in a short-range aircraft as research object.
Studies have shown that it is effective to use CFD numerical simulation method on the calculation of temperature field of APU compartment, a lot of flow and heat transfer information provide a theoretical basis for structural design and thermal management of the APU compartment, and provide the basis of fault diagnosis for structure and thermal management system.
[3] Minli Bai, Jizu Lv, Tiexin Ding, Flow and heat transfer numerical simulation of six-cylinder diesel engine cooling system [J], Transactions of 2004 (6): 525-531.
Simulation Method for the Fire Suppression Process Inside the Engine Core and APU Compartments [R].

One person is assumed to be seated and another moving person is simulated by dynamic meshes in computational fluid dynamics (CFD).
The feasibility of this numerical model under steady state simulation has been validated in similar study [3].
(a) Physical configuration of the chamber with ceiling mounted PV; (b) Physical configuration of the chamber with conventional PV; (c) Plane view at 1.2m for the details of moving person Table 1 Boundary conditions for air inlets and outlets length (m) Width (m) velocity (m/s) Boundary Condition Type Ceiling mounted PV inlet diameter=0.05m 6.65 velocity inlet Conventional PV inlet 0.2 0.1 0.65 velocity inlet Ambient air inlet 0.6 0.3 0.65 velocity inlet Outlet 1 0.35 0.2 pressure outlet Outlet 2 0.35 0.2 pressure outlet Numerical algorithm 1 Steady state simulation The CFD simulation is conducted by using commercially available software FLUENT.
Conclusions In this study, CFD method is utilized to analyze the effects of a moving person on both ceiling mounted PV and conventional PV in a small chamber.
Three-dimensional numerical simulation of a hybrid fresh air and re-circulated air diffuser for decoupled ventilation strategy.