Jet Impingement Cooling In Electronic Packages Using Computational Fluid Dynamics
| dc.contributor.author | Isapen, I. Rushyendran | |
| dc.date.accessioned | 2016-10-26T01:43:20Z | |
| dc.date.available | 2016-10-26T01:43:20Z | |
| dc.date.issued | 2001-03 | |
| dc.description.abstract | Jet impingement cooling has long been used in the industries for controlling temperature in material processing, cooling equipments and recently in cryosurgery. Jet impingement cooling has been identitied to be useful in the electronics cooling as well due to its high heat removal capabilities. Electronic systems have now grown smaller resulting in very high heat generation compared to previous systems, requIrIng new cooling solutions such as jet impingement cooling. Jet impingement cooling in electronic packages is carried out numerically llsing a commercial finite volume code called FLUENTâ„¢. The local heat transfer coefficients on a heat source due to a normally impinging, axisymmetric, confined and submerged liquid jet are investigated. Numerical predictions are made for nozzle diameter (d) of 3.18 111m at several nozzle to target plate spacing (Hid) ranging from I to 8. The turbulent jet Rcynolds numbers considcred are 8500, 10000 and 13000 with a pcrllourinatcd diclccric nuid Flourincrt-77 (Fe77) as the working Iluid. The now ficld and heat transfer me solved using thc standard high Reynolds number k-I: turhulence modI.!!. 1\ lIlore detailed grid refilH:mcnt compared to previous investigatiolls is utilizcd. The nUlllerical predictions an: compared with previolls IIlllllcrical prcdictions using the k-I; turbulcnce Illodel as wl.!!l as with experimcntal n:sults available in the literaturc. Thc prcscnt methodology is superior compared to previous predidiolls lIsing k-I; Illodel. Pn:\'iollsly, the dcviations rroln the experimental n:sllits arc observed to he a maxilllulll of ()OA % fllr thc stagnation hcat tmnskr cocf'lil:iclIl a III I a nHlximulll or 5(,J) IXI fill' the averaged heat transkr wenicient. lhe present predictions with the standard high r J Reynolds number k-E turbulence model with modified grid refinement are able to produce results with maximum errors of 4.6 % and 9.9 % for stagnation and averaged heat transfer coefficients respectively. Numerical predictions are also carried out for those cases of Hid and Re for which neither experimental data nor numerical predicted data are available in the literature. From the predicted results, correlations are developed to determine the stagnation heat transfer coefficient, the average heat transfer coefficient as well as the variation of the local heat transfer coefficient along the radial direction. These correlations estimate the values satisfactorily. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/2879 | |
| dc.subject | Jet impingement cooling has long been used | en_US |
| dc.subject | for controlling temperature in material processing | en_US |
| dc.title | Jet Impingement Cooling In Electronic Packages Using Computational Fluid Dynamics | en_US |
| dc.type | Thesis | en_US |
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