Effect of heat generation and heat absorption on natural convection of Cu-water nanofluid in a wavy enclosure under magnetic field

Abdulkadhim, Ammar; Hamzah, Hameed K.; Ali, Farooq H.; Yıldız, Çağatay; Abed, Azher M.; Abed, Esam M.; Arıcı, Müslüm

doi:10.1016/j.icheatmasstransfer.2020.105024

Cited by 49 publications

(14 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two-dimensional governing equations in Cartesian coordinates for the natural convection of hybrid-nanofluid in a square cavity with a wavy wall are presented in the current work. The dimensional governing equations that were utilized in this study are provided by 50 , 51 : …”

Section: Mathematical Modellingmentioning

confidence: 99%

Natural convection in a porous cavity filled (35%MWCNT-65% Fe3O4)/water hybrid nanofluid with a solid wavy wall via Galerkin finite-element process

Gumir

Al‐Farhany

Jamshed

et al. 2022

Sci Rep

View full text Add to dashboard Cite

A numerical analysis of natural convective heat transfer in a square porous cavity with a solid wavy finite wall filled with (35% MWCNT-65% Fe3O4)/water hybrid nanofluid. The left wavy wall is heated to a constant temperature, the right wall is held at a low temperature, and the top and bottom walls are thermally insulated. Darcy-Brinkman-Forchheimer model is used to model porous medium with hybrid nanofluid. COMSOL Multiphasic Modeling Software via Galerkin finite element method has been used to solve the governing equations. The dimensionless parameters used in this investigation are; modified Rayleigh number (Ra* = 102, 103, 104, and 106), Darcy number (Da = 10–2, 10–4 and 10–6), Solid volume fraction (ϕ = 0.01, 0.03, and 0.05),undulation number (N = 1, 3, 5, and 7), amplitude of the wavy wall (A = 0.1, 0.2, and 0.3), and Prandtl number = 7.2 at constant high porosity. At a high Darcy number (Da = 10–2), the isotherm lines parallel to the vertical cavity walls, which means that conduction is the primary method of heat transport. At the same time, the convection mode is increasingly necessary at a lower Darcy number. The convection flow and the maximum amounts of stream function are reduced when both A = 0.1 and N = 1 increase. The average Nusselt number increases with increasing Ra*, while it decreases with increasing Darcy number and amplitude wave numbers. It has been determined that the largest improvement in heat transfer is at Ra* = 104, Da = 10–6, ϕ = 0.05, A = 0.1, and N = 1.

show abstract

Section: Mathematical Modellingmentioning

confidence: 99%

Natural convection in a porous cavity filled (35%MWCNT-65% Fe3O4)/water hybrid nanofluid with a solid wavy wall via Galerkin finite-element process

Gumir

Al‐Farhany

Jamshed

et al. 2022

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Available at www.ThermalFluidsCentral.org 2019; Majdi et al, 2019;Abdulkadhim et al, 2020). The problems of external flow are modeled by utilizing the hypothesis of traditional boundary layer via the assumption that the boundary layer exterior area is unchanged via the solid boundary (Das et al, 2017).…”

Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

Performance Evaluation of a Solar Water Heater Integrated With Built-in Thermal Energy Storage via Porous Media

Abed¹,

Majdi²,

Habeeb³

2021

Frontiers in Heat and Mass Transfer

Self Cite

View full text Add to dashboard Cite

The present work presents and analyzes the results acquired from outdoor experimental measurements of a solar latent heat storage unit integrated with built-in thermal energy storage at the presence and absence of porous media. The tank consists of a porous media part, a packed of glass beds, and the fluid flowing through the void space surrounding the porous glass beds. The porous tanks were filled by 1.68 mm glass beds to form bed heights (h) of 10 and 20 cm. Results show that the maximum thermal storage of 110 min is achieved in hot flow rate qh=4 LPM, cold flow rate qc=5 LPM and h=20 cm, while the same flow rates of the case of absence porous media gives 90 min of thermal storage time. The same enhancement was achieved in case of qh=2 LPM, qc=2 LPM and h = 20 cm during heating process due to heat transfer resistance by mean of porous media.

show abstract

“…TES is a significant way to address contradiction among request and quantity of heat [12][13][14][15][16]. Among such technologies, LHTES is obtained by utilizing phase change material (PCM) [17][18][19][20][21][22][23]. Kant et al [24] performed a survey on graphene nano-powders that have been melted using paraffin, accumulated in a square hole heated from one wall.…”

Section: Introductionmentioning

confidence: 99%

“…TES is a significant way to address contradiction among request and quantity of heat [12–16]. Among such technologies, LHTES is obtained by utilizing phase change material (PCM) [17–23]. Kant et al.…”

Section: Introductionmentioning

confidence: 99%

Simulation of charging of PCM within a duct containing nanoparticles

Zhang¹,

Wang

Rothan

et al. 2022

Z Angew Math Mech

View full text Add to dashboard Cite

With the involvement of sinusoidal containers of phase change material (PCM) inside the duct, new configuration for the ventilation system has been achieved in the current paper. Mixture of TiO2 and RT25 was assumed as PCM, and the temperature of domain is fixed at 25°C at the start of the process. Owing to the radiation of the sun, air becomes warmer up to 35°C and with entering the air into the domain with Re = 6000, the melting process starts. The cold air at the outlet section can be utilized for ventilating the room. Homogeneous model for NEPCM and K‐ɛ approach for turbulent air flow has been incorporated. ANSYS FLUENT was applied for simulating this unsteady mechanism, and verification of the model was done according to previous experimental work. To control the air gap among tanks, the factor “b” was utilized and the influence of the fraction of titanium oxide (ϕ) was analyzed in results. As nano‐sized material has been added, more heat can be received to RT25 and the completed process can be reached in lower time. With considering the highest “b,” as nano‐sized material, the required time reduces from 20,672 to 19705 s. When ϕ = 0, growth of b leads to a reduction of time of about 42.57%.

show abstract

Effect of heat generation and heat absorption on natural convection of Cu-water nanofluid in a wavy enclosure under magnetic field

Cited by 49 publications

References 50 publications

Natural convection in a porous cavity filled (35%MWCNT-65% Fe3O4)/water hybrid nanofluid with a solid wavy wall via Galerkin finite-element process

Natural convection in a porous cavity filled (35%MWCNT-65% Fe3O4)/water hybrid nanofluid with a solid wavy wall via Galerkin finite-element process

Performance Evaluation of a Solar Water Heater Integrated With Built-in Thermal Energy Storage via Porous Media

Simulation of charging of PCM within a duct containing nanoparticles

Contact Info

Product

Resources

About