article · Results in Engineering
Coupled radiation-free convection combines surface thermal radiation with natural convection heat transfer across diverse geometries. Research in this domain displays rising publication frequency and interest, reflecting its expanding role within thermal science. Investigations systematically examine fluid behaviour within varied enclosures or cavities, evaluating configurations both with and without internal heat sources. A synthesis of governing equations, foundational assumptions, parameters, and boundary conditions provides a structured theoretical framework for assessing these mechanisms. Across the surveyed simulation models and findings, surface thermal radiation demonstrates a consistent ability to improve natural convection heat transfer. By clarifying the combined impact of radiative and convective dynamics, this body of work establishes essential principles for future innovations in thermal engineering systems.
Understanding how thermal radiation interacts with natural fluid movement inside enclosed spaces helps engineers design more effective heating and cooling setups. Clarifying the governing physics and simulated outcomes enables specialists to predict heat transfer more accurately, supporting the development of advanced thermal management systems across a variety of industrial geometries.
The findings can inform designers and engineers developing thermal engineering systems that rely on enclosures with or without internal heat sources. By demonstrating how surface radiation enhances natural convection, the work offers analytical guidance for system design. Because the review focuses on theoretical equations, boundary conditions, and simulation models, the technology is at an early research stage and remains distant from direct commercial deployment.
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This paper represents an endeavor to review the advancements achieved in the topic of coupled radiation-free convection (CRFC) across various investigated models. Through detailed bibliometric analysis, the paper not only underscores the importance of CRFC publications but also highlights their frequency, signaling an increasing interest and significant contributions in this domain. The literature review is systematically structured, categorizing studies based on the types of cavities/enclosures with or without internal heating sources, thereby providing a comprehensive and structured overview of this field. It then delves into the crux of CRFC, giving the governing equations, assumptions, parameters, and variables, establishing a robust knowledge. Transitioning seamlessly to application, the paper explores simulated models, boundary conditions, and insightful result discussions. Notably, the proven influence of surface thermal radiation in enhancing free convection heat transfer throughout the reviewed studies underscores CRFC's transformative potential, paving the path for innovative advancements in thermal engineering systems.
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DOI: 10.1016/j.rineng.2024.102514
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