洪伟贾

Shanghai Jiaotong University, School of Mechanial Engineering, Graduate Student

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Papers by 洪伟贾

BEN-GURION UNIVERSITY OF THE NEGEV FACULTY OF ENGINEERING SCIENCES DEPARTMENT OF MECHANICAL ENGINEERING MELTING AND SOLIDIFICATION OF A PHASE-CHANGE MATERIAL WITH INTERNAL FINS Thesis Submitted in Partial Fulfillment of the Requirements for the

The present study explores numerically the processes of melting and solidification of the phase-c... more The present study explores numerically the processes of melting and solidification of the phase-change material (PCM) in a latent heat storage system with internal partitions or plate-type fins. The heat is transferred to the system through its horizontal base, to which conducting vertical fins are attached. Phase change material is stored between the fins. The material used in the simulations is a commercially available paraffin wax, and the fins are made of aluminum. The latent heat storage system is open at the top to ambient air.

$Figure 2.9. Correlation of melt fraction from vertical wall of rectangular cavity (Ho and Viskanta, 1984). Figure 2.9. Correlation of melt fraction from vertical wall of rectangular cavity$

$Figure 2.14. Interface shape traced at preselected times during melting from a side using pour-out method (T\n=38 °C, A=0.714) (Gau and Viskanta, 1986).$

$Figure 4.19. Melt fraction, case 3. Figure 4.20. Melt fraction, case 4.$

$Figure 5.13. Melt fraction of the PCM at different base temperatures, case 2. the Fourier number that corresponds to complete melting. Within the same geometrical case, the higher the temperature difference, the smaller$

$Figure 5.17. Melt fraction of the PCM at different base temperatures, case 6.$

$Figure 5.18. Correlation for melt fraction of case 2. figures 5.18-5.22 shows that for the thinnest system, figure 5.21, the coincidence of melting mostly from the fins which leads to a vertical melting front. Comparison of$

$Figure 5.22. Correlation for melt fraction of case 6.$

$Figure 5.33. Melt fraction evolution in all cases considered in this work.$

$Figure 5.34. Correlation for melt fraction taking into account the fin thickness. Figure 5.34. Correlation for melt fraction taking into account the fin thickness.$

$Figure A 2. Velocity fields for case 2 (a) V/V 0=0.3, (b) V/V 0=0.6, and case 4 (c) V/V =0.6). analysis for relatively wide systems at high melt fractions. liquid phase is an additional physical phenomenon that should be accounted for in the$

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