Personal profile
Research Interests
Recent research:
A cohesive research profile emerges from multiple CFD-based investigations into heat transfer management and aerodynamic performance in electronic cooling and air-moving devices. The work leverages ANSYS Fluent-CFD to model forced convection and energy–momentum conservation with two-equation turbulence models (including RNG k-epsilon). Across studies, the focus is on heat sinks for electronics (circular and multi-fin configurations) and centrifugal fans, aiming to understand how exposure time, base temperatures, air velocity, fin geometry, and operating speed influence temperature distribution, heat transfer stability, and system efficiency. Key insights include: longer exposure to high temperatures and higher air flow rates amplify fin and surrounding air temperature fluctuations before stabilization around the eighth second, while higher flow can enhance heat exchange and overall cooling effectiveness; numerically observed temperature gradients, central-vs-edge differences, and performance trends across fin arrangements provide guidance for thermal design. The work also demonstrates design and numerical evaluation of a centrifugal fan with backward-curved blades, achieving specified air capacity, pressure drop, and efficiency targets via CFD analysis and blade geometry-informed Euler concepts. Overall, the research advances understanding of how geometry, operating conditions, and turbulence modeling affect cooling performance in compact electronic assemblies.
Key Topics:
A cohesive research profile emerges from multiple CFD-based investigations into heat transfer management and aerodynamic performance in electronic cooling and air-moving devices. The work leverages ANSYS Fluent-CFD to model forced convection and energy–momentum conservation with two-equation turbulence models (including RNG k-epsilon). Across studies, the focus is on heat sinks for electronics (circular and multi-fin configurations) and centrifugal fans, aiming to understand how exposure time, base temperatures, air velocity, fin geometry, and operating speed influence temperature distribution, heat transfer stability, and system efficiency. Key insights include: longer exposure to high temperatures and higher air flow rates amplify fin and surrounding air temperature fluctuations before stabilization around the eighth second, while higher flow can enhance heat exchange and overall cooling effectiveness; numerically observed temperature gradients, central-vs-edge differences, and performance trends across fin arrangements provide guidance for thermal design. The work also demonstrates design and numerical evaluation of a centrifugal fan with backward-curved blades, achieving specified air capacity, pressure drop, and efficiency targets via CFD analysis and blade geometry-informed Euler concepts. Overall, the research advances understanding of how geometry, operating conditions, and turbulence modeling affect cooling performance in compact electronic assemblies.
Key Topics:
- Materials Science, Manufacturing & Additive/Subtractive Processes
- Standards, Validation, Benchmarks & Measurement Best-Practice
- Computational Fluid Dynamics (CFD) in electronic cooling
- Forced convection heat transfer and turbulence modeling (RNG k-epsilon)
- Heat sink design and performance optimization
- Centrifugal fans and blade geometry optimization
Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
Projects
- 1 Active
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Modeling and Thermal Analysis of the Heat Dissipation Process in Video Cards and Motherboards to Optimize the Performance and Lifespan of Personal Computers
Toapanta Ramos, L. F. (PI), Diaz Davila, W. G. (Col), Gansino Llanos, C. A. (Student), Sangoquiza Guerra, K. E. (Student), Guashco Rubio, M. D. R. (Student) & Espin Segovia, J. R. (External)
30/05/25 → …
Project: Research and Development
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Numerical Analysis by CFD of the Boiling Process and the Behavior of Aluminum Oxide Nanoparticles in Refrigerants R600a and R290
Salinas, J., Toapanta-Ramos, F. & Diaz, W., 2026, Smart Technologies, Systems and Applications - 4th International Conference, SmartTech-IC 2024, Revised Selected Papers. Narváez, F. R., Villa, M. N. & Díaz, G. M. (eds.). Springer Science and Business Media Deutschland GmbH, p. 125-138 14 p. (Communications in Computer and Information Science; vol. 2393 CCIS).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
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Numerical Study of 3D Heat Transfer in Heat Sinks with Circular Profile Fins Using CFD
Toapanta-Ramos, F., Guashco Rubio, M., Ortega-Loza, F. & Diaz, W., Oct 2025, In: Processes. 13, 10, 3199.Research output: Contribution to journal › Article › peer-review
Open Access1 Link opens in a new tab Scopus citations -
Numerical Study Using CFD on Heat Sinks for Electronic Components
Toapanta Ramos, L. F., Espin Segovia, J. R. & Diaz Davila, W. G., 1 Apr 2025, In: Enfoque Ute. 16, 16, p. 41-48 8 p.Research output: Contribution to journal › Article
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Numerical Study Through CFD of the Behavior of a Centrifugal Fan for Dust Extraction Systems
Yaguachi, L., Toapanta-Ramos, F., Quitiaquez, W. & Diaz, W., 2024, Systems, Smart Technologies and Innovation for Society - Proceedings of CITIS 2023. Salgado-Guerrero, J. P., Vega-Carrillo, H. R., García-Fernández, G. & Robles-Bykbaev, V. (eds.). Springer Science and Business Media Deutschland GmbH, p. 3-17 15 p. (Lecture Notes in Networks and Systems; vol. 870 LNNS).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review