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This paper aims to provide a systematic review of the academic literature on the determinants, processes and impacts of indigenous entrepreneurship (IE), highlights its contribution to current knowledge and identifies research gaps to guide future research.

Databases used in this study included Scopus, ABI, Business Source Complete, ProQuest and Emerald Insight. In total, 84 articles were included in the review.

The findings revealed that 33 studies were qualitative, 12 used a survey-based approach, 25 were conceptual and 14 used mixed approaches. The focus on theory-building research underlines the fact that more theory-testing research is needed in the future. In total, 38 studies were conducted in developed countries and 43 in developing countries. The findings indicated that IE was driven by many determinants such as family and clan ties, patriarchy and social stratification, government support and conducive entrepreneurial ecosystems. Processes related to policies, IE development programs, partnerships, expenditure mechanisms, equitable distribution of benefits and resource mobilization. The outcomes of IE included economic development, sustainability, increased indigenous economic participation, enhanced quality of life, self-determination and preserving cultural heritage.

The current paper has some limitations. Firstly, it focuses only on academic journals and excludes conferences, books and working papers. Secondly, it includes only English language academic articles. However, while the current systematic literature review (SLR) has these limitations, it presents a thorough view of the determinants, processes and impacts of IE. Future studies may consider other sources beyond academic journals and also include non-English publications, and this approach may identify interesting areas for future research.

Existing reviews of IE take a narrow perspective and fail to present a comprehensive view of the IE phenomenon. The current study aims to fill this gap in the literature and provides a SLR pertaining to IE’s determinants, processes and impacts. The review is both timely and relevant because it identifies gaps and serves as a springboard to guide future research.

Natural convection in finite enclosures is a common phenomenon in various thermal applications. To provide the thermal design guidelines, this study aims to numerically explore the potential of using internal baffles and nanofluids to either enhance or suppress heat transport in a vertical annulus. Furthermore, the annular-shaped enclosure is filled with aqueous-silver nanofluid and the effects of five distinct nanoparticle shapes are examined. In addition, the influence of baffle design parameters, including baffle position, thickness and length, is thoroughly analyzed.

The finite difference method is used in conjunction with the alternating direction implicit and successive line over relaxation techniques to solve nonlinear and coupled partial differential equations. The single phase model is used for nanofluid which is considered as a homogeneous fluid with improved thermal properties. The independence tests are carried out for assessing the sufficiency of grid size and time step for obtaining results accurately.

The baffle dimension parameters and nanoparticle shape exhibit significant impact on the convective flow and heat transfer characteristics, leading to the following results: sphere- and blade-shaped nanoparticles demonstrate around 30% enhancement in the heat transport capability compared with platelet-shaped nanoparticles, which exhibit the least. When considering the baffle design parameter, either a decrease in the baffle length and thickness or an increase in baffle height leads to an improvement in heat transport rate. Consequently, a threefold increase in baffle height yields a 40% improvement in thermal performance.

Understanding the impact of nanoparticle shapes and baffle design parameters on flow and thermal behavior will enable engineers to provide valuable insight on thermal management and overall system efficiency. Therefore, the current work focuses on exploring buoyant nanofluid flow and thermal mechanism in a baffled annular-shaped enclosure. Specifically, an internal baffle that exhibits conductive heat transfer through it is considered, and the impact of baffle dimensions (thickness, length and position) on the fluid flow behavior and thermal characteristics is investigated. In addition, the current study also addresses the influence of five distinct nanoparticle shapes (e.g. spherical, cylindrical, platelet, blade and brick) on the flow and thermal behavior in the baffled annular geometry. In addition to deepening the understanding of nanofluid behavior in a baffled vertical annulus, the current study contributes to the ongoing advancements in thermal applications by providing certain guidelines to design application-specific enclosures.