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Dergiler / Journal of Thermal Engineering / 2026 / Volume: 10 Issue: 1

Numerical investigation of forced convection flow of a complex Bingham–Papanastasiou fluid between two concentric

Benhanifia Kada(Laboratory of Energy in Arid Region (ENERGARID), Faculty of Science and Technology, University of Tahri Mohamed Bechar, P.O. Box 417, Bechar 08000, Algeria)0000-0002-2703-9496
Fares Redouane(Department of physics, Faculty of Science and Technology, Relizane university, 48000, Relizane, Algeria)0000-0003-2702-374X
Lakhdar Rahmanı(Laboratory of Energy in Arid Region (ENERGARID), Faculty of Science and Technology, University of Tahri Mohamed Bechar, P.O. Box 417, Bechar 08000, Algeria)0000-0003-4283-8250
Naveen Kumar Gupta(Department of Mechanical Engineering, GLA University, Mathura, 281406, India)0000-0003-0085-6661
Mebarki Brahım(Laboratory of Energy in Arid Region (ENERGARID), Faculty of Science and Technology, University of Tahri Mohamed Bechar, P.O. Box 417, Bechar 08000, Algeria)0000-0002-7471-2882
Hitesh Panchal(Department of Mechanical Engineering, Government Engineering College Patan, Gujarat, 636011, India.)0000-0002-3787-9712
Saeed Nazarı(Department of Mechanical Engineering, Ural Federal University, 620002, Russia)0000-0003-0257-1934
Abhinav Kumar(Department of Medical Instruments Engineering Techniques, Al-farahidi University, Baghdad, 00965, Iraq)0000-0002-2112-6652
Anand Patel(Department of Mechanical Engineering, LDRP Institute of Engineering and Technology, Gandhinagar, Gujarat, 382016, India)0000-0002-3844-7778
Sayfa
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Yayın Tarihi
2024-01-31
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

The presence of these undulations enhances fluid mixing and dis-rupts the formation of stagnant regions ,which leading to improved heat transfer.

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Amaç & Hipotez:This research presents a numerical investigation of the flow field and heat transfer of a Visco-plastic fluid, The Bingham-Papanastasiou model is used to examine the flow field and forced convection heat transfer of a Viscoplastic fluid between two concentric cylinders with a wavy inner surface.
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Temel Bulgular & Veri:The parameters studied in this research are expressed with the following values: r/ R=1/3, Reynolds number (Re=1, 10, 50), and undulation number (nu=0, 6, 12, 24).
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Sonuç & Katkı:The presence of these undulations enhances fluid mixing and dis-rupts the formation of stagnant regions ,which leading to improved heat transfer.
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Forced Convection · Complex Bingham –Papanastasiou Fluid · Concentric Cylinder

Abstract

This research presents a numerical investigation of the flow field and heat transfer of a Visco-plastic fluid, The Bingham-Papanastasiou model is used to examine the flow field and forced convection heat transfer of a Viscoplastic fluid between two concentric cylinders with a wavy inner surface. By focusing on this particular configuration (wavy inner cylinder shape), where the inner surface exhibits as the hot wall while the outer surface is considered as the cold wall. This investigation is numerically achieved by using the Comsol Multiphysics, which is based on the finite‐volume method, employing Galerkin’s method for solving the governing equations. The parameters studied in this research are expressed with the following values: r/ R=1/3, Reynolds number (Re=1, 10, 50), and undulation number (nu=0, 6, 12, 24). Increasing the inertia parameter results in a higher intensity of thermal buoyancy, positively influencing heat transfer, particularly at Re=50. Furthermore, the acceleration of flow within the investi-gated space improves the hydrodynamic behavior, facilitating the exchange of thermal energy between the hot and cold walls. Additionally, it has been discovered that an undulating shape with a specific number of undulations (nu=6) maximizes hydrothermal performance within the investigated volume. The presence of these undulations enhances fluid mixing and dis-rupts the formation of stagnant regions ,which leading to improved heat transfer.

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Bu Makaleye Atıf Yap

Kada, B., Redouane, F., Rahmanı, L., Gupta, N. K., Brahım, M., Panchal, H., Nazarı, S., Kumar, A., Patel, A. (2024). Numerical investigation of forced convection flow of a complex Bingham–Papanastasiou fluid between two concentric. Journal of Thermal Engineering, Volume: 10 Issue: 1. https://doi.org/10.18186/thermal.1429444

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