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26,756 results on '"Nusselt Number"'

37. Magnetohydrodynamic Convective Heat Transport in Pentagonal Thermal Annuli

Author

Manna, Nirmal K., Goswami, Garba, Biswas, Nirmalendu, Sarkar, Soumyadeep, Mandal, Dipak Kumar, Roy, Prokash C., Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Mukhopadhyay, Achintya, editor, and Ghosh, Koushik, editor

Published
2025
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38. Heat Transfer Characteristics of Hybrid Nanofluids in Rectangular Ducts with Constant Heat Flux: A Numerical Study

Author

Ray, A., Banerjee, S., Roy, P. C., Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Mukhopadhyay, Achintya, editor, and Ghosh, Koushik, editor

Published
2025
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39. Impact of Wavy Wall Cooling on Enhancement of Thermal Performance

Author

Dasgupta, Amrita, Rajak, Kritee, Manna, Nirmal K., Biswas, Nirmalendu, Mandal, Dipak Kumar, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Mukhopadhyay, Achintya, editor, and Ghosh, Koushik, editor

Published
2025
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40. Impact of Conducting Block and System Inclination on Magneto-Hydrodynamic Heat Transport

Author

Kabiraj, Anurag, Raj, Aditya, Manna, Nirmal K., Biswas, Nirmalendu, Mandal, Dipak Kumar, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Mukhopadhyay, Achintya, editor, and Ghosh, Koushik, editor

Published
2025
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41. Impact of Magnetic Field on Buoyancy-Driven Heat Transfer and Fluid Flow in an Enclosure Filled with Porous Media

Author

Mullick, Saddam Hossain, Banerjee, Sumit, Ghosh, Aditya Prakash, Kundu, Pranab Kumar, Dasgupta, Debabrata, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Mukhopadhyay, Achintya, editor, and Ghosh, Koushik, editor

Published
2025
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42. Enhancing Mixed Convection in Semicircular Channel with Twin Flexible Baffles

Author

Halder, Aniket, Bhattacharya, Arabdha, Manna, Nirmal K., Sarkar, Sandip, Biswas, Nirmalendu, Mandal, Dipak Kumar, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Mukhopadhyay, Achintya, editor, and Ghosh, Koushik, editor

Published
2025
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43. Enhancing Thermal Conductivity of Aluminium 6063 Alloy by Adding Titanium for Advanced Heat Sink Applications

Author

Ramesha, C. M., Rajendra, P., Balasubramanya, H. S., Kumar, S. Mohan, Kumar, V. Ravi, Kumar, M. E. Shashi, Pisello, Anna Laura, Editorial Board Member, Bibri, Simon Elias, Editorial Board Member, Ahmed Salih, Gasim Hayder, Editorial Board Member, Battisti, Alessandra, Editorial Board Member, Piselli, Cristina, Editorial Board Member, Strauss, Eric J., Editorial Board Member, Matamanda, Abraham, Editorial Board Member, Gallo, Paola, Editorial Board Member, Marçal Dias Castanho, Rui Alexandre, Editorial Board Member, Chica Olmo, Jorge, Editorial Board Member, Bruno, Silvana, Editorial Board Member, He, Baojie, Editorial Board Member, Niglio, Olimpia, Editorial Board Member, Pivac, Tatjana, Editorial Board Member, Olanrewaju, AbdulLateef, Editorial Board Member, Pigliautile, Ilaria, Editorial Board Member, Karunathilake, Hirushie, Editorial Board Member, Fabiani, Claudia, Editorial Board Member, Vujičić, Miroslav, Editorial Board Member, Stankov, Uglješa, Editorial Board Member, Sánchez, Angeles, Editorial Board Member, Jupesta, Joni, Editorial Board Member, Pignatta, Gloria, Editorial Board Member, Shtylla, Saimir, Editorial Board Member, Alberti, Francesco, Editorial Board Member, Buckley, Ayşe Özcan, Editorial Board Member, Mandic, Ante, Editorial Board Member, Ahmed Ibrahim, Sherif, Editorial Board Member, Teba, Tarek, Editorial Board Member, Al-Kassimi, Khaled, Editorial Board Member, Rosso, Federica, Editorial Board Member, Abdalla, Hassan, Editorial Board Member, Trapani, Ferdinando, Editorial Board Member, Magnaye, Dina Cartagena, Editorial Board Member, Chehimi, Mohamed Mehdi, Editorial Board Member, van Hullebusch, Eric, Editorial Board Member, Chaminé, Helder, Editorial Board Member, Della Spina, Lucia, Editorial Board Member, Aelenei, Laura, Editorial Board Member, Parra-López, Eduardo, Editorial Board Member, Ašonja, Aleksandar N., Editorial Board Member, Amer, Mourad, Series Editor, K N, Subramanya, editor, Wee, Hui-Ming, editor, and Oliveira, Mario Orlando, editor

Published
2025
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44. Thermo-Hydraulic Performance Evaluation: Comparing Three Heat Transfer Fluids for Curved Tube Receivers

Author

Chekifi, Tawfiq, Benmoussa, Amine, Khelifi, Reski, Boukraa, Moustafa, Pisello, Anna Laura, Editorial Board Member, Bibri, Simon Elias, Editorial Board Member, Ahmed Salih, Gasim Hayder, Editorial Board Member, Battisti, Alessandra, Editorial Board Member, Piselli, Cristina, Editorial Board Member, Strauss, Eric J., Editorial Board Member, Matamanda, Abraham, Editorial Board Member, Gallo, Paola, Editorial Board Member, Marçal Dias Castanho, Rui Alexandre, Editorial Board Member, Chica Olmo, Jorge, Editorial Board Member, Bruno, Silvana, Editorial Board Member, He, Baojie, Editorial Board Member, Niglio, Olimpia, Editorial Board Member, Pivac, Tatjana, Editorial Board Member, Olanrewaju, AbdulLateef, Editorial Board Member, Pigliautile, Ilaria, Editorial Board Member, Karunathilake, Hirushie, Editorial Board Member, Fabiani, Claudia, Editorial Board Member, Vujičić, Miroslav, Editorial Board Member, Stankov, Uglješa, Editorial Board Member, Sánchez, Angeles, Editorial Board Member, Jupesta, Joni, Editorial Board Member, Pignatta, Gloria, Editorial Board Member, Shtylla, Saimir, Editorial Board Member, Alberti, Francesco, Editorial Board Member, Buckley, Ayşe Özcan, Editorial Board Member, Mandic, Ante, Editorial Board Member, Ahmed Ibrahim, Sherif, Editorial Board Member, Teba, Tarek, Editorial Board Member, Al-Kassimi, Khaled, Editorial Board Member, Rosso, Federica, Editorial Board Member, Abdalla, Hassan, Editorial Board Member, Trapani, Ferdinando, Editorial Board Member, Magnaye, Dina Cartagena, Editorial Board Member, Chehimi, Mohamed Mehdi, Editorial Board Member, van Hullebusch, Eric, Editorial Board Member, Chaminé, Helder, Editorial Board Member, Della Spina, Lucia, Editorial Board Member, Aelenei, Laura, Editorial Board Member, Parra-López, Eduardo, Editorial Board Member, Ašonja, Aleksandar N., Editorial Board Member, Amer, Mourad, Series Editor, Guerri, Ouahiba, editor, Arab, Amar Hadj, editor, and Imessad, Khaled, editor

Published
2025
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45. Mixed convection of graphene based nanofluid flow over a flat plate submerged in a non-Darcy porous medium.

Author

Jena, Snehalata and Mishra, Manoj Kumar

Subjects
*MAGNETIC flux density, *DIFFERENTIAL forms, *ORDINARY differential equations, *NUSSELT number, *PARTIAL differential equations
Abstract

In this article fluid flow and heat transport of water+graphene based nanofluid over a flat plate saturated in a non-Darcy porous medium in the presence of constant magnetic field intensity is numerically investigated. The formulated mathematical model is in the system of Partial Differential Equation form which is then converted into non- dimensional Ordinary Differential Equation form with the help of similarity transformations. The numerical solutions were obtained by using MATLAB solver BVP4C. The effect of various pertinent parameters on fluid flow fields like temperature and the quantities of interest particularly, the Nusselt number and the skin friction coefficient are analyzed. The present analysis revealed that the rate of heat transport enhanced due to the increment of Biot number and the skin friction coefficient having the same behavior for the magnetic parameter. The study's discovery has a vast area of usage involving heat transport, cosmetics, defect sensors and biomedical. [ABSTRACT FROM AUTHOR]

Published
2024
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46. Inner thermal layout optimization for nanofluid-filled horizontal annular pipes.

Author

Jiang, Ye, Shi, Zhichao, Chao, Zi-chen, Wu, Ming-yu, Zhou, Zhifu, and Hua, Yue

Subjects
*OPTIMIZATION algorithms, *DISTRIBUTION (Probability theory), *HEAT exchangers, *NUSSELT number, *NATURAL heat convection, *NANOFLUIDS
Abstract

This paper investigates the optimization of the inner thermal layout in nanofluid-filled horizontal annular pipes under natural convection conditions. Two-dimensional models of annular pipes are established using a numerical simulation approach. Then, using this as the simulation tool, the layouts of single-, triple-, and quadruple-heat-source annular pipes are optimized. The coordinates of the inner cylinders are defined as the decision variables, and the average Nusselt number (Nu) on the cold wall surface as the objective function. For the single-cylinder model, both the Bayesian optimization algorithm (BOA) and the genetic algorithm (GA) derive the same results: an axisymmetric layout where the single heat source is positioned slightly above the axis of the annulus. However, the BOA takes much less computational time than the GA and, consequently, is chosen for cases with more complex geometry. The optimization layout of the three-cylinder model also shows an axisymmetric distribution, while the result for the four-cylinder model presents a centrally symmetric distribution. Compared to the original average Nu, the optimized ones are enhanced by 17.83%, 8.36%, and 6.18% for single-, triple-, and quadruple-heat-source annular pipes, respectively. The results of this study can be used for guiding the layout design and optimization of the nanofluid-filled exchangers with multi-inner heat sources. [ABSTRACT FROM AUTHOR]

Published
2023
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48. Modeling and simulation of entropy optimization in Darcy–Forchheimer flow of magneto-Ree–Eyring nanofluid with suction/injection and motile microorganisms.

Author

Reddy, M. Vinodkumar, Meenakumari, R., Ajithkumar, M., Sucharitha, G., Lakshminarayana, P., and Nath, Jintu Mani

Subjects
*NUSSELT number, *MASS transfer, *ORDINARY differential equations, *NONLINEAR differential equations, *PARTIAL differential equations
Abstract

Recent studies indicate that nanofluids are crucial for solar heat exchange operations and solar energy collectors. Furthermore, the importance of energy and mass transfer in entropy creation is significantly increased in a number of industrial and engineering processes, such as mechanical power collectors, air conditioning, food processing, refrigeration, and heat exchangers. As a result of this advancement, this research is aimed to explore the comparative study on bioconvective Darcy–Forchheimer flow of an incompressible hydromagnetic Ree–Eyring nanofluid over a chemically activated expanding sheet in suction and injection cases while including the consequences of radiation, energy generation, and convective boundary conditions. Boundary layer approximation is utilized to represent this investigation’s primary partial differential equations (PDE). Then, using the appropriate transformation, the models are rebuilt into nonlinear ordinary differential equations (ODE). Utilizing the BVP5C inbuilt MATLAB package, the numerical solutions for this examination are established. Further, the graphical and tabular representations allow us to analyze the impacts of several relevant features on the microorganism’s density, concentration, entropy creation, velocity, temperature, friction factor, Sherwood, and Nusselt number distribution. The outcomes reveal that the velocity field of the liquid movement is declined by applying positive amounts of the Darcy–Forchheimer and magnetic parameters, respectively. Boosting values of the radiation, thermal ratio parameter, and temperature Biot number assist an increase in the thermal field. It reveals the augmented entropy generation with the rising values of bioconvection Lewis number and Brinkman number. Furthermore, the mass transfer rate increases with larger values of the Brownian parameter and chemical reaction parameter. [ABSTRACT FROM AUTHOR]

Published
2025
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49. Evaluating experimentally the viability of employing hybrid nanofluids as an operating fluid in a shell-and-tube heat exchanger.

Author

Hassaan, Amr M.

Subjects
*HEAT exchangers, *HEAT transfer, *NUSSELT number, *DISTILLED water, *FLUIDS
Abstract

The use of hybrid nanofluids (HNF) in heat transfer applications has become the subject of studies during recent periods. Its ability to transfer heat is superior to single nanofluids, and this has been proven in many research. Shell and tube heat exchanger is one of the most common types and are therefore always under research to improve their performance. This study is a practical study that examines the effectiveness of HNF in their use as operating fluids in shell-and-tube heat exchangers instead of traditional operating fluids. A laboratory heat exchanger was used to complete this study. A group of HNF (MWCNTs- Al2O3/water) was synthesized at different concentration rates ranging from 0.4 to 2%. Tests were conducted for Reynolds values in the range from 2500 to 12,560. By measuring the variables in the tests and calculating some factors the results showed that, in comparison between the use of HNF and distilled water, it was found that there is an increase in the value of the Nusselt number for the HNF over the distilled water in a range of 10- 28.5%. The effectiveness increased when using the HNF by up to 22.7% compared to distilled water. Through experiments, an equation was deduced to calculate the value of the Nusselt number. There is good agreement between the results of this research and previous literature. [ABSTRACT FROM AUTHOR]

Published
2025
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50. A novel model of non-linear radiative Williamson nanofluid flow along a vertical wavy cone in the presence of gyrotactic microorganisms.

Author

Ahmed, Sameh E., Arafa, Anas A. M., and Hussein, Sameh A.

Subjects
*FINITE difference method, *NUSSELT number, *UNSTEADY flow, *STRAINS & stresses (Mechanics), *NANOPARTICLES
Abstract

A novel mathematical technique for an unsteady bioconvective flow of Williamson nanofluids over a vertical wavy cone in the presence of non-linear radiation and viscous dissipation impacts is investigated. The cone surface is described by a sinusoidal function while the components of the extra stress tensor are presented in terms of the dynamic viscosity. The irregular wavy surface is referred to the convective boundary conditions and nanoparticle passively controls conditions. The governing equations are presented in general forms then the condition $$G{r_L} \to \infty $$ G r L → ∞ and suitable transformations are used to map the wavy cone to regular domain. A fully implicit finite differences method (FDM) is applied to solve the converted system and wide ranges of independent variables are assumed. $$0 \le X\le 7, 0 \le Y\le 25$$ 0 ≤ X ≤ 7 , 0 ≤ Y ≤ 25. The major outcomes disclosed that the increase in the Williamson number $$We$$ We causes a reduction the nanofluid flow while the skin friction coefficient is rising. Further, there is an enhancement in the values of the Nusselt number up to 75% is obtained as Biot number $$Bi$$ Bi is altered from 0.1 to 0.4. Also, the convective boundary conditions in presence of the non-linear radiations are recommended to enhance the velocity, temperature and rate of the heat transfer. [ABSTRACT FROM AUTHOR]

Published
2025
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