Performance analysis on heat transfer characteristics of heat SINK with baffles attachment

Saravanakumar, T.; Kumar, Dhananjay

doi:10.1016/j.ijthermalsci.2019.04.002

Cited by 22 publications

(3 citation statements)

References 12 publications

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“…The channel entrance length, ribs pitch, channel length, and width are named E , P , L , and W , respectively, in Figure 1. The dimensions of the channel, as described by Saravana Kumar et al, 24 are provided in Table 2. The thermophysical properties of air are assumed at 300 K and the analysis is performed for Reynolds number in the range of 140–980.…”

Section: Design Of Channel and Boundary Conditionsmentioning

confidence: 99%

Two‐dimensional‐numerical investigation on the influence of first rib distance from the entrance of channel on Nusselt number and pressure drop

Shashidhara

Thomas

2022

Heat Trans

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Enhancing the heat transfer coefficient in heat sinks can be achieved by surface modification techniques. Although the addition of ribs increases heat transfer capacity, it also increases pressure drop, lowering the channel's thermohydraulic performance (THP) factor. Rib research began a decade ago, with the majority of studies focusing on new rib designs or factors such as relative roughness pitch, relative roughness height, channel width, and channel height (geometric optimization) to improve THP. The goal of this study is to investigate the influence of the positioning of the first rib from the channel entrance on the Nusselt number, pressure drop, and THP factor with a simple design that could be manufactured easily. Three distinct rib designs are evaluated with rib positioning from the channel entrance, rib thickness, pitch, and Reynolds number as the parameters. It was found that the fluid starts settling up at the ribs as the ribs are moved closer to the channel entry point, thus increasing the pressure drop and reducing the fluid velocity. For the proposed design and dimensions, the Nusselt number increases by 3%-5%, and the pressure drop lowers by 4%-14% when the first rib is placed away from the channel entrance.

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Section: Design Of Channel and Boundary Conditionsmentioning

confidence: 99%

Two‐dimensional‐numerical investigation on the influence of first rib distance from the entrance of channel on Nusselt number and pressure drop

Shashidhara

Thomas

2022

Heat Trans

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“…It is found that 0.8 performed better than fin heights of 0.9 or 1.0 . Saravanakumar and Kumar [43] analyzed two different heat sink experimentally and computationally which provided physical understanding of heat transfer characteristics. Hadad et al, [44] also worked on a heat sink parameter such as fin height, fin thickness and fin channel with CFD technique.…”

Section: Computational Fluid Dynamicsmentioning

confidence: 99%

Numerical Optimization of a CPU Heat Sink Geometry

Bangalee

Rahman

Zaimi

et al. 2021

CFDL

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During its operation CPU dissipates undesirable heat. Therefore, heat sink is very essential in modern computing system to absorb extra heat dissipated by the CPU. Forced convection air cooling is common approach. In the present work, a steady-state convective heat transfer process is analyzed for CPU cooling. A rectangular fin heat sink equipped in a computer chassis is numerically investigated and simulated using the software ANSYS CFX. A two-equation based turbulence model is chosen to capture the turbulence of the flow inside the domain. The overall dimension of the heat sink is optimized for three different parameters of the heat sink such as fin quantity, fin height and baseplate thickness. An optimum fin quantity, fin height and baseplate thickness are found, and, respectively. Two different orientations of fins are also compared. Better thermal performance is achieved when the fin channel is perpendicular to the surface parallel to the outlet. The average temperature of the heat sink is found. It is also predicted that the heat sink studied here is capable to keep the CPU temperature underthat is reasonably acceptable.

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“…The type, size, thickness, height, placement, etc., of the vortex generators in the heat exchanger have effects on flow and heat transfer. Many researchers investigated the heat transfer, pressure loss and thermal efficiency in various types of the heat exchanger installed with vortex generators such as baffle (Arani and Moradi (2019), Naqvi et al (2019), Ameur (2019), Saravanakumar and Kumar (2019)), rib (Bahiraei et al (2019), Bai et al (2019), Liu et al (2019), Li et al (2019)), winglet (Zhai et al (2019), Awais and Bhuiyan (2019), Dezan et al (2019)), etc. They reported that the vortex generators can improve the heat transfer rate and thermal performance in the heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Influence of Ring Size and Location on Flow Topology, Heat Transfer Structure and Thermal Efficiency in Heat Exchanger Square Channel Placed With 30-Degree Inclined Square Ring

Jedsadaratanachai¹,

Boonloi²

2020

Frontiers in Heat and Mass Transfer

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This paper presents the numerical investigations (finite volume method with SIMPLE algorithm) on flow structure, heat transfer behavior and performance assessment in heat exchanger square channel placed with 30 o inclined square ring (ISR). The influences of ring size and placement on flow and heat transfer characteristics are considered for laminar flow region with the Reynolds number in the range around 100-2000. The purpose for the insertion of the ISR in the square channel is to induce the vortex flow and also increase the turbulent mixing. The numerical result reveals that the ring size and location have effects for the changes of the flow and heat transfer behaviors in the tested section. The present of the ISR in the tested section gives the maximum heat transfer rate around 8.13 times above the smooth square channel. In addition, the optimum thermal performance at similar pumping power or TEF is around 3.10.

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Performance analysis on heat transfer characteristics of heat SINK with baffles attachment

Cited by 22 publications

References 12 publications

Two‐dimensional‐numerical investigation on the influence of first rib distance from the entrance of channel on Nusselt number and pressure drop

Two‐dimensional‐numerical investigation on the influence of first rib distance from the entrance of channel on Nusselt number and pressure drop

Numerical Optimization of a CPU Heat Sink Geometry

Influence of Ring Size and Location on Flow Topology, Heat Transfer Structure and Thermal Efficiency in Heat Exchanger Square Channel Placed With 30-Degree Inclined Square Ring

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