Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2604.05596 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918430999838720 |
|---|---|
| author | Madivalar, Deepa Puttanna, Vishwanath Kadaba Kandasamy, A |
| author_facet | Madivalar, Deepa Puttanna, Vishwanath Kadaba Kandasamy, A |
| contents | This study numerically investigates heat transfer enhancement in laminar, incompressible viscoplastic nanofluid flow through the entrance region of a circular cylinder with a uniformly heated wall, including the effects of both, non-aggregation and aggregation of nanoparticles. Nanofluid properties are modeled using Brinkman and Maxwell models in the case of non-aggregation, and Krieger-Dougherty, Maxwell-Bruggeman models in the case of aggregation, while the viscoplastic behavior is described by the Bingham-Papanastasiou model. The governing boundary layer equations are solved using a finite-difference method. The effects of yield stress and nanoparticle volume fraction (up to 5%) on friction, pressure drop, and Nusselt number are analyzed, and performance evaluation criteria are evaluated to identify the optimal volume fraction for maximum efficiency. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_05596 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Aggregation Effects on Heat Transfer in Viscoplastic Nanofluid Entrance Flows Madivalar, Deepa Puttanna, Vishwanath Kadaba Kandasamy, A Fluid Dynamics This study numerically investigates heat transfer enhancement in laminar, incompressible viscoplastic nanofluid flow through the entrance region of a circular cylinder with a uniformly heated wall, including the effects of both, non-aggregation and aggregation of nanoparticles. Nanofluid properties are modeled using Brinkman and Maxwell models in the case of non-aggregation, and Krieger-Dougherty, Maxwell-Bruggeman models in the case of aggregation, while the viscoplastic behavior is described by the Bingham-Papanastasiou model. The governing boundary layer equations are solved using a finite-difference method. The effects of yield stress and nanoparticle volume fraction (up to 5%) on friction, pressure drop, and Nusselt number are analyzed, and performance evaluation criteria are evaluated to identify the optimal volume fraction for maximum efficiency. |
| title | Aggregation Effects on Heat Transfer in Viscoplastic Nanofluid Entrance Flows |
| topic | Fluid Dynamics |
| url | https://arxiv.org/abs/2604.05596 |