rectangular duct
Heat transfer enhancement in a rectangular duct by using winglet and nanofluids
... a rectangular duct with plate-fins heat ...short rectangular fins attached in 8x8 arrays to a surface having various inclination ...the duct channel width to height, the ratio of the winglets ...
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Localized turbulence structures in transitional rectangular-duct flow
... in rectangular-duct flow, including the shape of localized structures, should depend on cross-sectional aspect ratio A of the duct, where A = s/h ( 1), s ( h ) and h being the duct half span ...
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Fluid flow and heat transfer characteristics in a curved rectangular duct using Al2O3-water nanofluid
... the duct aspect ratio (b/a) Moreover, Chandratilleke and Nursubyakto‟s [40] numerical study of a curved rectangular duct reported that the heat transfer for a curved duct increases with the ...
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Optimization of Heat Transfer through Rectangular Duct
... stationary duct which sheds light on the detailed physics encountered in the fully developed flow region, and the sharp 180° bend ...the duct, the distribution of mean and turbulent quantities in the ...
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An Investigation of Premixed Flame Propagation in a Straight Rectangular Duct
... Clanet and Searby [14] suggested the acceleration mechanism (analytical - empirical theory) of ame acceleration in an open-ended tube. They stated that the ame acceleration happens due to the initial ignition geometry at ...
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The Study of a Flame Propagation in a Rectangular Duct with a Locally Stratified Flow-Field
... a rectangular duct where the ignition end is kept ...the duct correlates well with the tulip and inversion formations; with a peak pressure at the inversions and tulip flame formation ...the ...
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CFD Based Comparative Analysis of Different Ribs with Varying and Same Height in Rectangular Duct
... Pongjet Promvonge , Chinaruk Thianpong[10]- The rib cross-sections used in the present study are triangular (isosceles), wedge (right-triangular) and rectangular shapes. Two rib arrangements, namely, in-line and ...
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Heat transfer and friction behaviors in rectangular Duct with Two Different Ribs
... through rectangular ducts with reveres pentagonal shape at same height, reveres pentagonal shape at uniformly varying height, Triangular shape at same height, Triangular shape at uniformly varying height ...ribbed ...
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Thermo Hydraulic Performance of a Rectangular Duct With Staggered Inclined Discrete Rib Arrangement
... [2] it has been seen that due to the interactions of the primary and secondary flows resulting in the exchange of transverse ribs in a continuous manner by the inclined rib square duct, the wall of the ribbed ...
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Solar dryer with thermal storage and biomass-backup heater
... In case of low solar irradiation during the day, the drying process can be backed up by a biomass heater. In this study, the backup heater was made of a drum, rectangular duct and flue gas chimney. The drum ...
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Effects of Baffle on Entropy Generation in Separated Convection Flow Adjacent to Inclined Backward Facing Step
... Numerical simulations of a two-dimensional laminar forced convection flow adjacent to inclined backward-facing step in a rectangular duct are presented to examine effects of baffle on flow, heat transfer ...
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Numerical Analysis of a Three Dimensional Fluid Flow in a Flat Plate Solar Collector
... The study by Prashant Baredar et al. [4] evaluates heat transfer and fluid flow behavior in a rectangular duct with inverted U-type turbulator roughened ribs mounted on one of the principal wall (solar ...
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CFD analysis of laminar heat transfer in a ch...
... Habib et al. [7] reported the characteristics of turbulent flow and heat transfer inside the periodic cell formed between segmented baffles staggered in a rectangular duct and pointed out that the pressure ...
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Investigating The Parameters For The Performance Enhancement Of A Solar Air Heater Having Different Artificially Roughened Geometries
... Reynolds number range from 2500-18000, relative roughness height from 0.02-0.04 and angle of attack of flow from 30 0 -90 0 at fixed relative pitch of 10. Bhagoria et al [1] performed experiment to determine the effect ...
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Vol 6, No 6 (2015)
... a rectangular duct and time dependent pressure gradient effect on unsteady MHD couette flow and heat transfer of a caisson fluid was studied by Attia ...
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Investigation on Thermal Performance of Solar Air Heater by using artificial roughness A Review
... in rectangular duct using repeated ribs in W- continuous pattern. The W- pattern ribs have been tested for both pointing upstream and down stream directions to the flow. The parameters used were Reynolds ...
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Performance Analysis of Solar Air Heater in Rectangular Channel With Double Inclined Ribs with Gap
... They reported that large value of Nusselt number corresponded to roughness height of ribs are 0.037 and roughness pitch of 10. Small value of friction factor corresponded to relative roughness height of 0.0289 and ...
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Identification of Model Parameters of Vaporized Hydrogen Peroxide Decomposi tion Flux on Building Materials for Compu tational Fluid Dynamics
... The entire rectangular duct chamber was constructed of stainless steel. Therefore, we first estimated the VHP decomposition rate on the stainless steel surfaces in the test section, including all of the ...
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CFD Analysis of Heat Transfer through Artificially Roughened Solar Duct
... ABSTRACT - The thermal performance of solar air heater is generally poor due to low heat transfer coefficient between the absorber plate and air flowing in the duct. In order to improve the thermal performance ...
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