Kitchen and Toilet of the Residence Exhaust Flow Field Analysis

2011 ◽  
Vol 354-355 ◽  
pp. 726-731
Author(s):  
Yue Ren Wang ◽  
Cong Xue ◽  
Jing Zhang
Keyword(s):  
Indoor Air ◽  
Cfd Simulation ◽  
Simulation Software ◽  
Field Analysis ◽  
Air Distribution ◽  
Volume Changes ◽  
Air Volume ◽  
Secondary Pollution ◽  
Comparison Results ◽  
Flow Field Analysis

Adopting the k-ε standard model, the CFD simulation software to simulate the indoor kitchen and toilet different row of indoor air volume air distribution in natural ventilated circumstance, by comparison results show that different row of indoor air volume changes in the rate of secondary pollution rate, and then to provide the change rule of indoor air quality protection reference basis.

Rotor Cooling System Design and Fluid Field Analysis of MW-Level High-Speed Permanent Magnet Motor

2012 ◽  
Vol 588-589 ◽  
pp. 518-521
Author(s):  
Feng Ge Zhang ◽  
Guang Hui Du ◽  
Tian Yu Wang ◽  
Na Huang
Keyword(s):  
Permanent Magnet ◽  
High Speed ◽  
Cfd Simulation ◽  
Cooling System ◽  
Ventilation System ◽  
Simulation Software ◽  
Field Analysis ◽  
Field Calculation ◽  
Permanent Magnet Motor ◽  
Fluid Field

Due to ventilation structure of high power high-speed permanent magnet motor is complex and rotor cooling is difficult, the rotor cooling system was designed for a 1020kw 19000r/min high-speed permanent magnet motor and fluid field calculation model was established through the fluid flow CFD simulation software, and then the solving regional and boundary conditions of the 3D fluid field was determined. The numerical calculation and analysis was carried out and 3D fluid field distribution was get within the ventilation system. On the basis of the results of the flow field calculation, the coefficient of wall heat can be got more accurately, which provides a basis for the optimization and count of the MW-level high-speed motor temperature field.

Research about Jet Flow Mechanism and Flow Field Analysis for Layered Composite Materials

2013 ◽  
Vol 415 ◽  
pp. 642-646
Author(s):  
Yi Yong Yao ◽  
Rong Ya Zhou ◽  
Li Ping Zhao
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Composite Structures ◽  
Cfd Simulation ◽  
Simulation Analysis ◽  
Fiber Composite ◽  
Layered Composite ◽  
Field Analysis ◽  
Carbon Fiber Composite ◽  
Flow Field Analysis

Layered carbon fiber composite performing microstructure was a part of multi-layer porous piping dielectric structure. At first a jet mechanism was put forward and researched for layered composite materials. The Z reinforcing fibers puncture was put to the layered composite structures. By the CFD simulation analysis, the feasibility of jet puncture was verified, the interlayer strength of the connection was increased and the Z bunch to the carbon fiber was eliminated, which laid theoretical foundation by enhancing the layered carbon fiber composite perform quality.

Air-Flow Distribution Simulation and Experimental Analysis of a New Testing Room for Refrigerated Display Cabinet

2012 ◽  
Vol 614-615 ◽  
pp. 701-706
Author(s):  
Chao Huang ◽  
Fang Wang ◽  
Zhi Min Wu ◽  
Chao Guo
Keyword(s):  
Cfd Simulation ◽  
Design Method ◽  
Air Flow ◽  
Flow Distribution ◽  
Simulation Software ◽  
Air Distribution ◽  
Distribution Analysis ◽  
Experiment System ◽  
Quality Regulation ◽  
Testing Room

Based on European Standard EN441-2, an experiment system for measuring the thermal properties of refrigerated display cabinet is designed and constructed. Considering the practice requirements from user, the air distribution analysis is doing under various air-flow form in the testing room. This paper uses the FLUENT, which is one of the CFD simulation software, to verify the design method of air movement. Finally a series of tests required for laboratory quality regulation have been done and the data of velocity or temperature is under the new requirement.

scholarly journals Moving Object Detection by 3D Flow Field Analysis

2021 ◽  
Vol 22 (4) ◽  
pp. 1950-1963
Author(s):  
Cansen Jiang ◽  
Danda Pani Paudel ◽  
David Fofi ◽  
Yohan Fougerolle ◽  
Cedric Demonceaux
Keyword(s):  
Flow Field ◽  
Object Detection ◽  
Moving Object Detection ◽  
Moving Object ◽  
Field Analysis ◽  
3D Flow ◽  
Flow Field Analysis

scholarly journals Numerical simulation and experimental validation of cavitating flow in a multi-hole diesel fuel injector

2021 ◽  
pp. 146808742199863
Author(s):  
Aishvarya Kumar ◽  
Ali Ghobadian ◽  
Jamshid Nouri
Keyword(s):  
Computational Cost ◽  
Cavitating Flow ◽  
Field Analysis ◽  
Navier Stokes ◽  
Fuel Injector ◽  
Fluid Behavior ◽  
Flow Field Analysis ◽  
Charged Couple Device ◽  
Biodiesel Fuels ◽  
High Level

This study assesses the predictive capability of the ZGB (Zwart-Gerber-Belamri) cavitation model with the RANS (Reynolds Averaged Navier-Stokes), the realizable k-epsilon turbulence model, and compressibility of gas/liquid models for cavitation simulation in a multi-hole fuel injector at different cavitation numbers (CN) for diesel and biodiesel fuels. The prediction results were assessed quantitatively by comparison of predicted velocity profiles with those of measured LDV (Laser Doppler Velocimetry) data. Subsequently, predictions were assessed qualitatively by visual comparison of the predicted void fraction with experimental CCD (Charged Couple Device) recorded images. Both comparisons showed that the model could predict fluid behavior in such a condition with a high level of confidence. Additionally, flow field analysis of numerical results showed the formation of vortices in the injector sac volume. The analysis showed two main types of vortex structures formed. The first kind appeared connecting two adjacent holes and is known as “hole-to-hole” connecting vortices. The second type structure appeared as double “counter-rotating” vortices emerging from the needle wall and entering the injector hole facing it. The use of RANS proved to save significant computational cost and time in predicting the cavitating flow with good accuracy.

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