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CFD Investigation of Damper Plate Effect on Air Flow in High Speed Rotation Hard Disk Drive by Using K-E with a Partial Model Jarupol Suriyawanakula and Kiatfa Tangchaichitb Depatment of Mechanical Engineering, Khon Kaen University, Midtraphab Road, Muang Khon Kaen, Thailand ajarupol@kku.ac.th, bkiatfa@kku.ac.th Keywords: Hard Disk Drive, Air Damper, Turbulent Model, Flow Simulation Abstract.
In HDD air flow simulation, the well known LES turbulent model requires large computing times and resources, including CPU, RAM and storage intensive which is not appropriate when using various variables.
The computational fluid dynamics (CFD) commercial software used is ANSYS Fluent14.
Figure 1 Mesh of hard disk drive model M1 This simulation is divided into two parts.
Bogy: An alternative to CFD: piecewise linear models for frequency spectra of flow induced drag in hard disk drives, Microsystem Technologies, Vol.13, No.8 (2007), pp. 1271–1279

In this paper, a sort of heat sink collocated with high-power IGBT module, which is commonly used in car-carrying motor control system, is designed based on thermal analysis by means of CFD simulation and computer-aided analyzing, also the influence relations of structure parameters with thermal performance are studied.
With the help of Computational Fluid Dynamics (CFD) software, thermal analysis and simulation for heat sink design become very convenient.
Computer aided engineering by CFD may improve the design results, and shorten the developing cycle obviously [3].
In order to examine the design result, thermal simulation and analysis for the designed heat sink are given to verify the thermal performance.
[3] Q.Y.Mei, Application of thermal simulation on the cooling of a phased array antenna, Electro-Mechanical Engineering. 23 (2007) 11-13

Multi-dimensional computational dynamic fluid (CFD) codes have been widely used to estimate component temperatures.
In the first method, measured heat flux data on exhaust pipes surface are used as the boundary condition to CFD simulations.
The most detailed is due to EdBendell, where a coupled steady-state CFD and thermal study was undertaken at full-vehicle scale [3].
R., and Harne, V., “Simulation and Experimental Evaluation of Air Cooling for Motorcycle Engine”, SAE-32-0099, 2006
Numerical Simulation of the Gas-Solid Two-Phase Flows in a Precalciner.

The CFD application is common in the FPSO design and verification.
Hu et al [9] used CIP in simulation.
Zhu R.C. [11] utilized the potential flow theory and CFD to provide a new numerical simulation method which can reproduce green water process.
From the numerical simulations and analysis of green water, we can find that CFD and FLUENT have been commonly used in numerical simulation of green water.
CFD technology could completely simulate the interaction of ship and fluid, but it is not time-saving without high accuracy and reliability.

Individual Thermal Environments of Building with a Novel Air-Conditioning Energy-Saving Equipment Nguyen Anh Tuan1,3,a, Wu-Chieh Wu2,3,b,*, Huy Bich Nguyen4,c 1Department of International Cooperation, Ministry of Science and Technology, Hanoi city 10000, Vietnam 2Internet of Things Laboratory, Chunghwa Telecommunication Laboratories,Taoyuan city 326, Taiwan, Republic of China 3Institute of Mechanical and Electrical Engineering, National Taipei University of Technology, Taipei city 106, Taiwan, Republic of China 4Faculty of Engineering and Technology, Nong lam University, Ho Chi Minh city 70000, Vietnam aemail: tuana102000@yahoo.com, or anhtuan@most.gov.vn b,*email: wcwu@cht.com.tw, cemail: nhbich@hcmuaf.edu.vn Keywords: Building Energy, Thermal comfort; Individual air-conditioning system; Computational fluid dynamics (CFD).
In this study, we analyze the airflow circulation cell of the IACS with varied outlet port opening dimensions using the computational fluid dynamics (CFD) technique.
The CFD code used in this study was a Fluent solver (Fluent, Inc. 2006)[7]. 3.
CFD simulation of airflow distributions were carried out in the modeled room after 500 seconds of cooling.
Therefore, these simulation results will be a valuable basis for the research and design of an IACS system.

CFD Simulations and Experiments of Flow Fluctuations Around a Steam Control Valve.
Flow analysis in valve with moving grids through CFD techniques.
Improvement in a control valve geometry by CFD techniques.
Simulation Model for Compressible Fluid Passing Through a Pressure Control Valve. 7th Intl.
Simulation and Scientific Computing, (2008),p.456-459.

In present study, the CFD simulation is done for a 3-D room and the required energy to achieve the thermal comfort in a room is calculated.
In the present work, the CFD simulation has been done to investigate the effect of building height on the energy consumption of the two radiator and floor heating system.
CFD Modeling and boundary condition The continuity, momentum and energy equations along with standard have been solved for simulation of the velocity and temperature fields in a 3-D room with dimensions of, as the figure 1 shows.
The geometry and condition of their experimental setup is the same as our CFD setup.
The comparison of CFD model and experimental data [5] for the unsteady case.

This paper offers to watch the changes of flow profile within the column by the application of simulation software ANSYS CFX .Besides, according to the distribution of flow profile, the traditional column has been done a lot of dynamic simulation, especially the stigma part of the column.
The Simulation and optimization of fluid within chromatographic column.
As the boundary conditions of various parts are different, This paper uses software ICEM CFD to mesh and optimist the grid on the column, distributor, and some catheters [2], the grid sets relatively dense in the important part or the greater gradient part, and sparse in the unimportant part .
Summary (1) According to the simulation above, if the distributor’s design is improper, two conditions often occur.
Computational Fluid Dynamics-CFD software principles and applications.

The software tool Fire Dynamics Simulator (FDS) is used for simulation and data analysis, which applies CFD technology to the continuum motion.
The simulation is therefore solved for time T = 10 minutes.
An alternative approach by CFD method after simulation and analysis of results in FDS and MS Excel programs can be declared valid from the condition VFVn = 675,208 m3 ≤ VNVs =783,006 m3.
Conclusion The following is evident from the discussion chapter: · The hypothesis of the applicability of the alternative approach to solving the problem is confirmed according to the simulation by the CFD method and subsequent analysis in the FDS and MS Excel programs.
However, the result of the simulation performed this way depends on several different factors, that must be considered

,Ltd The 6th-9,North Avenue Fuchengmen Xicheng District, Beijing, China aliangsichao0519@gmail.com, bzzxd@yeah.net, c kangs@ncepu.edu.cn, dzhaoyongfeng@clypg.com.cn Keywords: Numerical simulation, DES, Micrositing, Bolund Abstract: Detached eddy simulation (DES) with wall function was used in the flow simulation over complex terrain.
It provides an good opportunity for CFD modeling validations.
Fig.1 Bolund orography, mast positions and character lines Numerical methods The CFD package FINE/TURBO was utilized in the simulation.
Although DES is an unsteady simulation, the flow field behaves like a steady simulation when the grid is sparse, seen in the flow field using a 6 million grid.
CFD simulation of neutral ABL flows[R].