Index Catalog // ScholarsArchive@OSU

Effects of orifice geometry and surface boundary condition on heat transfer of impinging jet array

Creator:: Kanokjaruvijit, Koonlaya.
Abstract:: The effects of the orifice geometry and the surface boundary condition on the heat transfer distribution to a flat surface of an impinging jet array were investigated. The jet array impinged normally onto the surface which was either isothermal or had a uniform heat flux. The experiments were performed for...
Resource Type:: Masters Thesis
Full Text:: follows Nu = ARe7{l-B[(zl D)(Gc IG)r}Pr 1l3 where A,m,B,n = C(xn I Df'(Yn I D)n"(zl Dr: C, nx, ny

Flow characteristics of semi-confined impinging jet arrays

Creator:: Dano, Bertrand P. E.
Abstract:: The present study proposes to investigate the flow structure of different arrays of jets impinging on a flat surface enclosed by three walls, creating a channel that forces the air to leave in one preferential direction, generating a self sustain crossflow. Details of both the mean and some turbulence quantities...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: James A. Liburdy The present study proposes to investigate the flow structure of

Characterization of the near-field flow structure of an acoustically self-excited jet in a large enclosure using particle image velocimetry (PIV)

Creator:: Tobias, Jason A.
Abstract:: An experimental study of the near-field flow structure produced by an incompressible turbulent Acoustically Self-Excited Jet (ASEJ) in a large enclosure using Particle Image Velocimetry (PIV) is presented. The salient feature of this jet is that it provides an increase in near-field mixing and turbulence without additional external power input....
Resource Type:: Masters Thesis
Full Text:: • • ............................................................................ 58 6.13: Whole field streamwise variation of U/Ue - (a) unexcited jet, (b) first stage ASEJ, (c

The effects of pulsing and blowing ratio on a 45° inclined jet in cross flow

Creator:: Stander, Arjan
Abstract:: The effect of jet flow pulsing and blowing ratio on a jet in cross flow has been investigated. Preliminary jet flow studies were performed without cross flow and an extensive study of jet with cross flow was done for a total of nine test cases. The effect of velocities ratios...
Resource Type:: Masters Thesis
Full Text:: and Blowing Ratio on a 45° Inclined Jet in Cross Flow. Abstract approved: urdy De orah V. Pence The

Local heat transfer rate and bubble dynamics during jet impingement boiling

Creator:: Mani, Preeti
Abstract:: Characterization of local boiling trends, in addition to the typically reported area-averaged trends, is essential for the robust design and implementation of phase change technologies to sensitive heat transfer applications such as electronics cooling. Obtaining the values of heat fluxes corresponding to locally varying surface temperatures has been a challenge...
Resource Type:: Dissertation
Full Text:: ............................................................................................................... 73 25. A section of the calibration grid in FC-72 at 10°C and 20°C subcooled pool conditions

Submerged jet impingement boiling thermal management

Creator:: Cardenas, Ruander
Abstract:: Technologies such as avionics and power electronics are driving the demand for thermal management schemes towards high heat fluxes and low surface temperatures. Typically, these applications require the dissipation of heat fluxes in the rage of 100-1000 W/cm² while maintaining surface temperatures lower than about 85 °C. Phase-change heat transfer...
Resource Type:: Dissertation
Full Text:: ) Error in heat flux as a function of chosen span of excess temperature for filtering, (c) Comparison

Experimental investigation of merging buoyant jets in a crossflow

Creator:: Gregorič, Miroslav
Abstract:: Merging isothermal buoyant jets in a crossflow were investigated experimentally. Jets of salt water were discharged from a constant head tank into the stagnant tap water. A crossflow was simulated by towing the discharge ports through the receiving water at desired speeds. Visualization of the jet cross-sections produced by a...
Resource Type:: Masters Thesis
Full Text:: > - 2 N J F I G U R E 1 : D e f i n i t i o n s k e t c h o f m e r g i n g b u o y a n t

An exact method of determining the spreading of a supersonic jet exhausting into a supersonic free stream

Creator:: Tschang, Pin-seng
Resource Type:: Masters Thesis
Full Text:: ••• tovar4a the eolut101l ot a cUtttcult proltl•a a c-.lete pu'bl1ehe4 treat _, ot vllioh eeae to lie liD

CFD simulation of single-phase and flow boiling in confined jet impingement with in-situ vapor extraction using two kinds of multiphase models

Creator:: He, Xiaoliang
Abstract:: With continued development of the electronic industry, the demand for highly efficient heat removal solutions requires innovative cooling technologies. A computational fluid dynamic (CFD) study, including heat transfer, is performed for an axisymmetric, confined jet impingement experiencing boiling and coupled with vapor extraction. Boiling occurs at the target surface while...
Resource Type:: Masters Thesis
Full Text:: three mass flux values (G = 200, 400, and 800 kg/s-m2): (a) z* ≈ 1, (b) z* = 0.5, and (c) z* ≈ 0

Performance and flow stability characteristics in two-phase confined impinging jets

Creator:: Sabo, Michael D.
Abstract:: Advances in electronics fabrication, coupled with the demand for increased computing power, have driven the demand for innovative cooling solutions to dissipate waste heat generated by these devices. To meet future demands, research and development has focused on robust and stable two-phase heat transfer devices. A confined impinging jet is...
Resource Type:: Masters Thesis
Full Text:: temperature. The nucleate boiling regime, points A to C, is desirable from a heat 10 transfer perspective

ScholarsArchive@OSU

Effects of orifice geometry and surface boundary condition on heat transfer of impinging jet array

Flow characteristics of semi-confined impinging jet arrays

Characterization of the near-field flow structure of an acoustically self-excited jet in a large enclosure using particle image velocimetry (PIV)

The effects of pulsing and blowing ratio on a 45° inclined jet in cross flow

Local heat transfer rate and bubble dynamics during jet impingement boiling

Submerged jet impingement boiling thermal management

Experimental investigation of merging buoyant jets in a crossflow

An exact method of determining the spreading of a supersonic jet exhausting into a supersonic free stream

CFD simulation of single-phase and flow boiling in confined jet impingement with in-situ vapor extraction using two kinds of multiphase models

Performance and flow stability characteristics in two-phase confined impinging jets

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