Numerical simulation and PIV measurement of the flow-field in optical disc drives

Isoshima, Nobuyuki; Fujimoto, Takayuki; Abe, Y.; Watanabe, Masatoshi; Yamauchi, Yoshiaki

doi:10.1007/s00542-006-0297-6

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…The simulation results had already been validated by conducting experiments to take pressure and velocity distribution measurements using particle image velocimetry (PIV). Although some errors occurred because of the Cartesian grid, we confirmed that reasonable simulation results can be obtained when investigating the thermal design (16) .…”

Section: Cooling Design Problem Of Optical Disc Drivesupporting

confidence: 75%

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Investigation of Data Exploration Method for Thermal-Fluid Simulation Results Using Proper Orthogonal Decomposition

Isoshima

Obayashi

2013

JCST

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A data exploration method based on POD was investigated to get clues to improve actual-product designs from a small set of rough-design candidates. The current method is based on the Oyama method which was used to acquire design knowledge of Pareto-optimal solutions obtained by evolutionary approach with large set of simulation models. The expanded method adopted (1) 2 steps POD analysis, and (2) voxel representation for different topology models. These approaches enabled to evaluate rough-design candidates which had non-parametric structures and those were difficult to handle in the original method. Especially, for the case of handling rough-design candidates, there was no explicit rule for model number ordering at the "first" POD analysis. We found that reordering the model numbers based on the first POD result was important, and rich information was obtained from the expansion coefficient vectors that made it possible to classify the feature regions and to detect feature regions with complicated flow structures at the "second" POD analysis. The effectiveness of the expanded method was verified in a cooling design problem for an optical disc drive. We found that the expanded POD-based data exploration method is a promising method for detecting key factors for actual product designs.

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Section: Cooling Design Problem Of Optical Disc Drivesupporting

confidence: 75%

“…8 was used for CFD simulation. The model is based on the simplified geometry model used for the PIV verification experiments (16) .…”

Section: Design Candidate Models and Cfd Simulation For Pod Analysismentioning

confidence: 99%

Investigation of Data Exploration Method for Thermal-Fluid Simulation Results Using Proper Orthogonal Decomposition

Isoshima

Obayashi

2013

JCST

Self Cite

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“…The simulation results were already validated by conducting experiments to take pressure and velocity distribution measurements using Particle Image Velocimetry (PIV). Although there were some errors due to the Cartesian grid, we confirmed that reasonable simulation results can be obtained when investigating the thermal design [6].…”

Section: Verification Of Cooling Design For Optical Disc Drivesupporting

confidence: 75%

Investigation of Data Mining Method for Thermal-Fluid Simu-Lation Results Based on Pressure Difference Between Front and Back Sides Using Medial-Surface and Its Application to Thermal Design Problems

Isoshima¹,

Onodera²,

Obayashi³

2014

Proceedings of 10th World Congress on Computational Mechanics

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A data mining method is proposed for extracting feature regions and for suggesting design candidates from large-scale Computational Fluid Dynamics (CFD) results. The detected regions in this method are the regions where the pressure difference between the front and back sides is large. We introduce a medial-surface used in the structural analysis for the thin parts as an evaluation surface in order to apply complicated geometries, which have curved surfaces, holes, ribs, and steps. We applied this method to the laser diode (LD) cooling problem in optical disc drives, and the following results were obtained. (1) Three featureregions are extracted from the CFD results. (2) Two of three regions were effective and were consistent with the actual product design.

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Development of high-performance cooling structure for PDP TV sets using computational fluid dynamics simulation with heat transfer based on Cartesian grid system

Isoshima

Watanabe

Tsukamoto

et al. 2008

2008 Second International Conference on Thermal Issues in Emerging Technologies

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Numerical simulation and PIV measurement of the flow-field in optical disc drives

Cited by 3 publications

References 5 publications

Investigation of Data Exploration Method for Thermal-Fluid Simulation Results Using Proper Orthogonal Decomposition

Investigation of Data Exploration Method for Thermal-Fluid Simulation Results Using Proper Orthogonal Decomposition

Investigation of Data Mining Method for Thermal-Fluid Simu-Lation Results Based on Pressure Difference Between Front and Back Sides Using Medial-Surface and Its Application to Thermal Design Problems

Development of high-performance cooling structure for PDP TV sets using computational fluid dynamics simulation with heat transfer based on Cartesian grid system

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