Heat transfer enhancement of perforated pin heat sink in future aircraft applications

Sakanova, Assel

doi:10.1016/j.applthermaleng.2017.06.031

Cited by 27 publications

(7 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sakanova [21] studied the 3D conjugate heat transfer in perforated heat sink under aerospace conditions. Liquid and gas coolant such as water, oil, fuel, and air was used under laminar and turbulent conditions.…”

Section: Authors Flow Conditions and Geometry Study Resultsmentioning

confidence: 99%

Thermo-Hydraulic Performance of Square Micro Pin Fins under Forced Convection

Niranjan¹,

Singh²,

Ramkumar³

2021

IJHT

View full text Add to dashboard Cite

Thermal management of the new generation’s high performance electronic and mechanical devices is becoming important due to their miniaturization. Conventionally, the plate fin arrangement is widely used for removal of dissipated heat but, their effectiveness is not up to mark. Among different options, the most attractive and efficient alternative for overcoming this problem is micro pin fin heat sink. This paper presents the experimental investigation of square micro-pin fins heat sink for identifying the most suitable pin fin geometry for heat removal applications under forced convection. Twenty five square micro pin fin heat sinks were tested for three different heat load and Reynolds number. The results show that for large fin height lower thermal resistance was observed at the cost of large pressure drop. The dimensionless heat transfer coefficient increases with fin height and Reynolds number while it decreases with increasing fin spacing. The improvement in micro pin fin efficiency were observed by about 2 to 9% owing to presence of fins on the impingement surface, flow mixing, disruption of the boundary layers, and augmentation of turbulent transport.

show abstract

Section: Authors Flow Conditions and Geometry Study Resultsmentioning

confidence: 99%

Thermo-Hydraulic Performance of Square Micro Pin Fins under Forced Convection

Niranjan¹,

Singh²,

Ramkumar³

2021

IJHT

View full text Add to dashboard Cite

show abstract

“…Hydrofoil shape has the conic arc with shape parameter of 0.5. Thermo-physical properties of fuel and air is taken from [2]. The inlet velocity for each type of flow is presented in Table 2.…”

Section: Methodsmentioning

confidence: 99%

“…Pin fin heat sink seems to be promising for aircraft cooling system. The latest work of the same group [2] deal with the heat transfer enhancement by applying the perforated pin fin heat sink for cooling system in future aircraft. It is concluded that perforation can not only improve the heat transfer but also results in weight reduction.…”

Section: Introductionmentioning

confidence: 99%

Comparison of pin-fin and finned shape heat sink for power electronics in future aircraft

Sakanova

Tseng

2018

Applied Thermal Engineering

Self Cite

View full text Add to dashboard Cite

“…The results showed that for an optimal range of porosities at a specified perforation range, the laterally perforated finned heat sink has a lower thermal resistance at a constant pumping power through the heat sink base. Sakanova 40 worked on augmentation of heat transfer through perforated finned heat sink for aircraft. The outcome of this study showed that when air is used, the rate of heat transfer of perforated finned heat sink is found to be greater than solid pin‐fin geometry for laminar as well as turbulent flow.…”

Section: Experimental Studiesmentioning

confidence: 99%

Improvement of heat transfer through fins: A brief review of recent developments

Maji¹,

Choubey

2020

Heat Trans

View full text Add to dashboard Cite

Fins or extended surfaces are generally used in heat exchangers to enhance heat transfer between the main surface and ambient fluid. Various types of simple-shaped fins, namely, rectangular, square, annular, cylindrical, and tapered, have been used with different geometrical combinations. To satisfy industrial demand, different trials have also been carried out for designing optimized fins. The optimization of fins can be performed either by enhancing heat dissipation at an exact fin weight or by diminishing the weight of the fin by precise heat dissipation. Recently a notable amount of work on some typical fins, like, porous fins and perforated fins, has also been carried out. This paper presents a brief review on heat transfer enhancement using fins of different types considering variable thermophysical and geometric parameters, which will also be useful for future use of geometrical modifications of extended surfaces, based on the cost and availability of space.analytical approach, computational approach, experimental approach, perforated fin, porous fin | INTRODUCTIONAdvanced technologies need high-performance heat transfer equipment. Techniques for enhancing the heat transfer rate are classified into two categories: active and passive methods. In the design point of view, active methods are complex as they require some extraneous power input for necessary flow adjustments and to improve the heat transfer rate and thus applications are limited. On the other hand, passive methods require geometrical or surface adjustments to the flow passage by incorporating additional devices. Additionally, by interrupting or varying the existing flow behavior (except for extended surfaces); higher heat transfer coefficients are promoted through this method, which is also followed by an increase in the corresponding pressure drop. The amount of conduction, convection, and radiation of an object shows the amount of heat it transfers. The heat transfer rate is enhanced by increasing the temperature difference between the object and the environment or by enhancing the coefficient of convective heat transfer or by maximizing the surface area of the body. In some cases, it is not appropriate or cost effective to alter the first two options. Introducing a fin to a body, however, expands the surface area and sometimes this is a cost-effective solution for heat transfer problems. Extended surfaces or fins are illustrations of passive methods that are generally used in different industrial applications for the enhancement of heat transfer between the primary surface (heat sink) and the surrounding fluid. Currently reducing the cost and size of fins is the key target of the fin industry. This demand is generally met by the high-thermal-conductivity and costly metals used to fabricate finned surfaces. Many efforts have been made to construct optimized fins. (a) By changing the size and shape of the solid fin: Instead of a longitudinal rectangular solid fin, if the geometry of fin design is changed, the performance parameters and heat tr...

show abstract

Heat transfer enhancement of perforated pin heat sink in future aircraft applications

Cited by 27 publications

References 27 publications

Thermo-Hydraulic Performance of Square Micro Pin Fins under Forced Convection

Thermo-Hydraulic Performance of Square Micro Pin Fins under Forced Convection

Comparison of pin-fin and finned shape heat sink for power electronics in future aircraft

Improvement of heat transfer through fins: A brief review of recent developments

Contact Info

Product

Resources

About