Al2O3-water nanofluid heat transfer enhancement of a twin impingement jet

Al-Zuhairy, Reyadh Ch.; Kareem, Zaid S.; Abdulhadi, Ali A.

doi:10.1016/j.csite.2020.100626

Cited by 17 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The thermal dispersion effect is the chaotic movement of the nanoparticles in the fluid that accelerates the energy exchange in the coolant, and this effect is intensified with smaller particles size and higher fluid temperature. These three factors have been used to explain the heat transfer enhancement of jet impingement using nanofluid by Li et al [8], Zhou et al [9], Lv et al [15], Lv et al [16], Barewar et al [17], Kareem et al [18], Sorour et al [19], Amjadian et al [20], Balla et al [21], and Al-Zuhairy et al [25].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Flow Structure and Heat Transfer Behavior of Multiple Jet Impingement Using MgO-Water Nanofluids

et al. 2023

View full text Add to dashboard Cite

Nanofluids have attracted significant attention from researchers due to their ability to significantly enhance heat transfer, especially in jet impingement flows, which can improve their cooling performance. However, there is a lack of research on the use of nanofluids in multiple jet impingements, both in terms of experimental and numerical studies. Therefore, further investigation is necessary to fully understand the potential benefits and limitations of using nanofluids in this type of cooling system. Thus, an experimental and numerical investigation was performed to study the flow structure and heat transfer behavior of multiple jet impingement using MgO-water nanofluids with a 3 × 3 inline jet array at a nozzle-to-plate distance of 3 mm. The jet spacing was set to 3, 4.5, and 6 mm; the Reynolds number varies from 1000 to 10,000; and the particle volume fraction ranges from 0% to 0.15%. A 3D numerical analysis using ANSYS Fluent with SST k-ω turbulent model was presented. The single-phase model is adopted to predict the thermal physical nanofluid. The flow field and temperature distribution were investigated. Experimental results show that a nanofluid can provide a heat transfer enhancement at a small jet-to-jet spacing using a high particle volume fraction under a low Reynolds number; otherwise, an adverse effect on heat transfer may occur. The numerical results show that the single-phase model can predict the heat transfer trend of multiple jet impingement using nanofluids correctly but with significant deviation from experimental results because it cannot capture the effect of nanoparticles.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Flow Structure and Heat Transfer Behavior of Multiple Jet Impingement Using MgO-Water Nanofluids

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Also, as compared to channel flow, 2-jet flow and 4-jet flow, 1-jet flow amplified average Nusselt number by 91.6%, 29.8%, and 57.1% respectively. Al-Zuhairy et al [19] studied the thermal effect Al 2 O 3 water nanofluid on the surface using the twin circular jet technique. The ratio of the nanoparticle concentration and the diameter of the nozzle height (Z/D) was the main parameter for this experimental study.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Cooling an Industrial Roller by Using Swirling Jets

Kılıç

Sahin

Demircan

et al. 2022

ECJSE

View full text Add to dashboard Cite

Effective cooling of industrial rollers has prime importance to prevent the quality degradation of the system and product. High temperature difference on the roller surface may result in thermal stresses and can cause deformations on roller surface and product. In order to prevent these deformations, cooling of an industrial roller by using swirling jets is investigated for different parameters numerically in this study. Effects of Reynolds number, surface heat flux and variation in inlet temperature of the fluid on the performance of an industrial roller are investigated in terms of temperature difference between inner and outer surface of the roller. ANSYS Fluent CFD program is used to simulate heat transfer and fluid flow in this numerical study. As a result, it is obtained that increasing Re number from 1000 to 1700 causes a decrease of 45.4% in the temperature difference between inner and outer surface of the roller. Increasing surface heat flux from 5000 to 12500 W/m2 has resulted in an increase of 149.4% in difference between inner and outer surface temperature. Increasing coolant fluid inlet temperature from 5 to 20°C has resulted in an increase of surface temperature but there is no significant change in heat transfer characteristics of the system. It is evaluated that the results of this study will contribute to design more effective cooled industrial roller.

show abstract

“…Nanoparticles are used to improve heat transfer by influence the characteristics of traditional fluid such as water and the resulting mixture is called nanofluid. These types of fluids are usually having the combined merits of both base fluid and nanoparticles [1][2][3]. Therefore, it is very vital to prepare the nanofluids and study its thermal and physical properties due to the limitation of measurement techniques of heat transfer [4].…”

Section: Introductionmentioning

confidence: 99%

Effect of ZnO Nanoparticles on the Thermo-Physical Properties and Heat Transfer of Nano-Fluid Flows

Dhiaa¹,

Salih²,

Al-Yousefi³

2020

IJHT

View full text Add to dashboard Cite

In this research, an improvement in alternative heat transfer and thermal properties of ZnO nanoparticles (NPs)/ distilled water, DW nanofluid are experimentally studied and investigated. The two-step approach is utilized to prepare the ZnO NPs/water nanofluid using different concentrations and different inlet temperatures. Scanning Electron Microscopy (SEM) and UV–visible spectrophotometer is employed to characterize the nanofluid. Varying flow rates and the temperatures are examined in the heat exchanger's horizontial tube and shell pipe as well as the impacts of ZnO nanoparticles and the temperatures are studied on nanofluid's thermal conductivity and viscosity. The findings show improvements in the thermal conductivity of ZnO NPs / DW nanofluid. A maximum value of 6.67% of the thermal conductivity is achieved at a temperature of 343K using 1 % ZnO NPs. Nusselt Number also shown an improvement of 38% at a temperature of 343K using 0.2% wt of ZnO NPs under the turbulent condition (Reynolds Number range of 8000 to 20000). Experimental results are compared with previous correlations and an acceptable agreement is observed.

show abstract

Al2O3-water nanofluid heat transfer enhancement of a twin impingement jet

Cited by 17 publications

References 12 publications

Experimental and Numerical Investigation of Flow Structure and Heat Transfer Behavior of Multiple Jet Impingement Using MgO-Water Nanofluids

Experimental and Numerical Investigation of Flow Structure and Heat Transfer Behavior of Multiple Jet Impingement Using MgO-Water Nanofluids

Numerical Investigation of Cooling an Industrial Roller by Using Swirling Jets

Effect of ZnO Nanoparticles on the Thermo-Physical Properties and Heat Transfer of Nano-Fluid Flows

Contact Info

Product

Resources

About