Numerical study of fluid flow and heat transfer in a multi-port serpentine meso-channel heat exchanger

Dehghandokht, Masoud; Khan, Mesbah G.; Fartaj, Amir; Sanaye, Sepehr

doi:10.1016/j.applthermaleng.2011.01.035

Cited by 19 publications

(10 citation statements)

References 19 publications

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“…It's also necessary to compare the Nusselt number measured from the experimental data with the predictions and other correlations for accuracy and reliability. There are three correlations; the first is suggested by (Dittus-Boelter) Eq.13 [11], the second developed by the researcher (Dehghandokht et al) Eq.14 [12] and the last one was presented by (Sieder -Tate) Eq.15 [13].…”

Section: Base Fluid (Water)mentioning

confidence: 99%

The Heat Transfer Performance of MWCNT, CuO, and Al₂O₃ Nanofluids in an Automotive Engine Radiator

2021

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The effect of enhancing heat transfer using three nanofluids, Multi-Walled Carbon Nanotubes MWCNT, Copper oxide CuO, and aluminum oxide Al2O3, have been experimentally studied on the automotive radiator with a concentration of 1% vol and different flow rates (4-8) l/min, air velocity of 3 m/s and inlet temperatures range (60-80) °C. The results showed that the use of nanofluids improved the thermal performance compared to the base fluid. Using the (MWCNT-Water) achieved 41.7% of Nusselt number where as, copper oxide (CuO) and aluminum oxide (Al2O3) have improved the Nussult number by 31.7 % and 12.3 % respectively. The Nusselt number showed an increase with the increase in the flow rate and the inlet temperature.

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Section: Base Fluid (Water)mentioning

confidence: 99%

The Heat Transfer Performance of MWCNT, CuO, and Al₂O₃ Nanofluids in an Automotive Engine Radiator

2021

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“…Past experimental studies on liquid flow in circular, rectangular and trapezoidal micro-channels showed that roughness and geometric deviations play an important role in the performance of fluid flow, as it affects the pressure drop through a microchannel and increases the friction factor more than the heat transfer coefficient occurring from the transition from laminar to turbulent flow. Therefore, it should be at most avoided during the fabrication of microchannels used in heat transfer and fluid-based technologies [ 5 , 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Superficial and Dimensional Quality Features in Metallic Micro-Channels Manufactured by Micro-End-Milling

et al. 2013

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Miniaturization encourages the development of new manufacturing processes capable of fabricating features, like micro-channels, in order to use them for different applications, such as in fuel cells, heat exchangers, microfluidic devices and micro-electromechanical systems (MEMS). Many studies have been conducted on heat and fluid transfer in micro-channels, and they appeared significantly deviated from conventional theory, due to measurement errors and fabrication methods. The present research, in order to deal with this opportunity, is focused on a set of experiments in the micro-milling of channels made of aluminum, titanium alloys and stainless steel, varying parameters, such as spindle speed, depth of cut per pass (ap), channel depth (d), feed per tooth (fz) and coolant application. The experimental results were analyzed in terms of dimensional error, channel profile shape deviation from rectangular and surface quality (burr and roughness). The micro-milling process was capable of offering quality features required on the micro-channeled devices. Critical phenomena, like run-out, ploughing, minimum chip thickness and tool wear, were encountered as an explanation for the deviations in shape and for the surface quality of the micro-channels. The application of coolant and a low depth of cut per pass were significant to obtain better superficial quality features and a smaller dimensional error. In conclusion, the integration of superficial and geometrical features on the study of the quality of micro-channeled devices made of different metallic materials contributes to the understanding of the impact of calibrated cutting conditions in MEMS applications.

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“…The three-dimensional (3D) numerical simulations are performed using ANSYS FLUENT 14.5, a widely used commercial CFD code of finite volume method (FVM). This method consists of the discrete approximation of the volume and surface integrals of the Navier-Stokes equations in steady state [21].…”

Section: Methodsmentioning

confidence: 99%

Uniformity of Flow and Heat Transfer Distribution in Minichannel Heat Exchanger Slab: A Numerical Approach

Ismail

Fotowat

Fartaj

2013

Modelling and Simulation / 804: Signal and Image Processing

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A three-dimensional numerical analysis of heat and mass transfer during cooling of automotive fluids, including automatic transmission fluid, ethylene glycol, and water is performed in a multiport serpentine minichannel heat exchanger. The simulations are carried out with eight CPUs having 64GB of RAM using ANSYS FLUENT version 14.5, a finite volume method based commercial CFD code. Three-dimensional double precision pressurebased absolute velocity formulation with parallel processing is utilized. Air inlet temperature of 14°C and mass flow rate of 507g/s are used to cool the hot working liquids having temperature of 76°C. Both Two different flow rates of working liquids: constant mass flux of 1423kg/m 2 .s and constant Reynolds number of 200 are considered in current study. Thermal and flow fields during the cooling process all over the MICHX and different channels are determined. Furthermore, the entrance effect on mass and heat transfer are studied. Distribution of flow, as well as heat transfer is found to be more uniform for ATF with compared to ethylene glycol and water. It is also observed that entrance effect on mass flow rate of water is more obvious than other two working liquids.

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Numerical study of fluid flow and heat transfer in a multi-port serpentine meso-channel heat exchanger

Cited by 19 publications

References 19 publications

The Heat Transfer Performance of MWCNT, CuO, and Al₂O₃ Nanofluids in an Automotive Engine Radiator

The Heat Transfer Performance of MWCNT, CuO, and Al₂O₃ Nanofluids in an Automotive Engine Radiator

Evaluation of Superficial and Dimensional Quality Features in Metallic Micro-Channels Manufactured by Micro-End-Milling

Uniformity of Flow and Heat Transfer Distribution in Minichannel Heat Exchanger Slab: A Numerical Approach

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Numerical study of fluid flow and heat transfer in a multi-port serpentine meso-channel heat exchanger

Cited by 19 publications

References 19 publications

The Heat Transfer Performance of MWCNT, CuO, and Al2O3 Nanofluids in an Automotive Engine Radiator

The Heat Transfer Performance of MWCNT, CuO, and Al2O3 Nanofluids in an Automotive Engine Radiator

Evaluation of Superficial and Dimensional Quality Features in Metallic Micro-Channels Manufactured by Micro-End-Milling

Uniformity of Flow and Heat Transfer Distribution in Minichannel Heat Exchanger Slab: A Numerical Approach

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Product

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The Heat Transfer Performance of MWCNT, CuO, and Al₂O₃ Nanofluids in an Automotive Engine Radiator

The Heat Transfer Performance of MWCNT, CuO, and Al₂O₃ Nanofluids in an Automotive Engine Radiator