Numerical and experimental investigation of flow structure and behavior of nanofluids flow impingement on horizontal flat plate

Teamah, Mohamed A.; Dawood, Mohamed M. Khairat; Shehata, Ali I.

doi:10.1016/j.expthermflusci.2015.12.012

Cited by 49 publications

(20 citation statements)

References 26 publications

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“…The average Nusselt number grows as the Reynolds number increases. Finally, the total electric input power is defined by heat balance Equation13 [9], [15], [18], [19], [22], [25] and [28]. Where ′′ is the heat flux calculated as .…”

Section: = ℎ (12)mentioning

confidence: 99%

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Effect of Nano-Fluid Jet Impingement on Heat Transfer of Surfaces With Different Shapes

Ewis¹,

Mageed²,

El-Morsi³

et al. 2019

IJASTR

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This study experimentally investigates heat transfer enhancement of an impinging free liquid jet on a hot surface of copper plate with different shapes, by replacing the base fluid, distilled water with Al 2 O 3 nanofluid (10 nm), different shapes of heated surface of copper plate (Flat, Concave, Convex Wavedand Corrugated), different impingement Reynolds numbers ranging from (7,565 to nearly 18,460), five nanoparticles mass concentrations (0%, 0.2%, 0.5%, 1% and 2%) were studied using distilled water and AL 2 O 3 nanofluid jet impingement.The results of the current experiments show that increasing the volume flow rate of the cooling fluid improves the heat transfer between the free liquid jet and the hot copper plate.Moreover, using nanofluid jet enhances the heat transfer.Additionally, increasing the surface area enhances the heat transfer between the cooling fluid and the hot plate and decreases the cooling time.Finally, it was noted that surface shape, impingement Reynolds number and nanofluid concentration affect the heat transfer enhancement processsignificantly.The accumulative effect of using nanafluid jet 2% with corrugated surface with higher flow rate on Nusselt number can reach 185%. On the other hand, using a dispersant for the nanofluid as polyethylene glycol keeps the nanofluid suspension and prevents agglomeration, but reduces its heat transfer enhancement effect.

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Section: = ℎ (12)mentioning

confidence: 99%

“…At a concentration of 10.0% and = 24,000 the heat transfer coefficient increased by 62% compared with the pure water. The CuOnanofluid increased the heat transfer by 8.9% and 12% compared to aluminium and titanium nanofluid, respectively [25]. Huang and Jang numerically investigated the impingement heat transfer features of nanofluids.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nano-Fluid Jet Impingement on Heat Transfer of Surfaces With Different Shapes

Ewis¹,

Mageed²,

El-Morsi³

et al. 2019

IJASTR

View full text Add to dashboard Cite

show abstract

“…Consequently, it was obtained that the heat transfer in the surface is not only depends on the turbulence formed but also depends on the flow geometry of the surface. Teamah et al [6] investigated heat transfer and flow structure formed by Al 2 O 3 nanofluid to flat plate by experimentally and numerically with various Reynolds number (Re = 3000-32000) and different volume ratio of nanofluids (φ = 0-10%). As the nanoparticles in the base fluid increases, the heat transfer from the surface increases and heat transfer coefficient can be enhanced by 62% according to the water is used base fluid only.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of combined effect of nanofluids and multiple impinging jets on heat transfer

Kılıç

Ali

2019

Therm sci

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The present study is focused on numerical investigation of heat enhancement and fluid-flow from a heated surface by using nanofluids with three impinging jets. Effects of different volume ratio, different heat flux and different types of nanofluids (CuO-water, Al 2 O 3 -water, Cu-water, TiO-water, and pure water) on heat transfer and fluid-flow were studied numerically. The CuO-water nanofluid was used as a coolant in the other parameter. Three impinging jets were used to cool the surface. Low Reynolds number k-ε turbulent model of PHONEICS CFD code was used for numerical analysis. It is obtained that increasing volume ratio from φ=2% to 8% causes an increase of 10.4% on average Nusselt number. Increasing heat flux six times has not a significant effect on average Nusselt number. Using Cu-water nanofluid causes an increase of 2.2%, 5.1%, 4.6%, and 9.6% on average Nusselt number with respect to CuO-water, TiO-water, Al 2 O 3 -water, and pure water.

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“…Kilic et al [5,6] surveyed the cooling of a flat plate with the support of the impinging fluid air jet for different Reynolds numbers and dimensionless channel heights. Teamah et al [7] investigated heat transfer and flow structure formed by Al 2 O 3 nanofluid to flat plate by experimentally and numerically with various Reynolds number and the different volume ratio of nanofluids. Sun et al [8] researched the effect of a single impinging jet using Cu-water nanofluids as working fluid on heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of heat transfer at a rectangular channel with combined effect of nanofluids and swirling jets in a vehicle radiator

Kılıç

Abdulvahitoğlu

2019

THERM SCI

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The present study is focused on the numerical investigation of heat transfer from a heated surface by using swirling jets and nanofluids. Consequences of discrete Reynolds number, inlet configuration and types of nanofluids (pure water,and TiO 2 -H 2 O) were studied numerically on heat transfer and fluid-flow. As a base coolant Al 2 O 3 -H 2 O nanofluid was chosen for all parameters. So, a numerical analysis was done by using a k-ω turbulent model of PHOENICS CFD code. It is determined that increasing Reynolds number from Re = 12000-21000 causes an increment of 51.3% on average Nusselt Number. Using 1-jet causes an increase of 91.6% and 29.8% on average Nusselt number according to the channel flow and 2-jet. Using Cu-H 2 O nanofluid causes an increase of 3.6%, 7.6%, and 8.5% on the average Nusselt number with respect to TiO 2 -H 2 O, Al 2 O 3 -H 2 O and pure water.

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Numerical and experimental investigation of flow structure and behavior of nanofluids flow impingement on horizontal flat plate

Cited by 49 publications

References 26 publications

Effect of Nano-Fluid Jet Impingement on Heat Transfer of Surfaces With Different Shapes

Effect of Nano-Fluid Jet Impingement on Heat Transfer of Surfaces With Different Shapes

Numerical investigation of combined effect of nanofluids and multiple impinging jets on heat transfer

Numerical investigation of heat transfer at a rectangular channel with combined effect of nanofluids and swirling jets in a vehicle radiator

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