Numerical simulation and experimental validation of the ventilation system performance in a heated room

Ifa, Sondes; Driss, Zied

doi:10.1007/s11869-020-00923-6

Cited by 9 publications

(2 citation statements)

References 22 publications

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“…Using it makes it possible to analyse air terminals more accurately and correctly determine their airflow. In previous research, investigators have used this tool infrequently; Sondes and Zied 39 examined velocity fields in various plans. As a result, they discovered that heat sources caused the airflow disturbance.…”

Section: Resultsmentioning

confidence: 99%

Modelling heat transfer and fluid flow in a ship engine room using CFD analysis to evaluate and improve ventilation

Salmani

Hosseini

Khani

2022

Proceedings of the Institution of Mechanical Engineers, Part M:

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Considering that about 90% of international trade is transported via sea and ship ventilation systems consume between 3.5% and 5.5% of the ship’s rated power, ship energy consumption is of particular interest and modelling and enhancing ventilation systems are vital to reducing and optimising energy consumption. Using Computational Fluid Dynamics (CFD) simulation, modelling heat transfer and airflow patterns helped us improve the ventilation system and temperature distribution, provide thermal comfort for staff and equipment, and increase energy efficiency. We discussed the radiation effect in CFD analysis; it affected wall temperatures significantly and temperature contours to some extent; it raised air temperatures by 3 K and wall temperatures by 14 K in some areas; this issue has not been considered in previous analyses. Considering seven different engine room configurations, we analysed temperature distribution, air terminal streamlines and other parameters to choose the best. We examined four energy-saving plans for the best configuration, and airflow was reduced by 13.8% and fan power by 36% based on the temperature distribution. By improving the engine room ventilation system, average engine room temperature, heat removal efficiency, combustion air temperature, and temperature distribution developed. The analysis of air terminals included assessing their streamlines, determining areas they circulated, and customising their airflow; in addition to vertical and horizontal air terminals at the top or bottom of the engine room, we also examined a separate air terminal for engine combustion air, this tool has been used very little before.

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Section: Resultsmentioning

confidence: 99%

Modelling heat transfer and fluid flow in a ship engine room using CFD analysis to evaluate and improve ventilation

Salmani

Hosseini

Khani

2022

Proceedings of the Institution of Mechanical Engineers, Part M:

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“…Techniques such as mechanical testing, dynamic impact testing, and acoustic emission analysis provide empirical evidence of energy dissipation during loading. By combining experimental results with theoretical predictions, it enriches the understanding of energy dissipation mechanisms is enriched, allowing for the refinement of design configurations to optimize toughness [145,146]. The new research focuses on uncovering the scientific principles that govern energy dissipation in composite configurations.…”

Section: Designing and Fabricating Composite Configurations Based On ...mentioning

confidence: 99%

Reviewing the Integrated Design Approach for Augmenting Strength and Toughness at Macro- and Micro-Scale in High-Performance Advanced Composites

Sadeghi,

Cavaliere

2023

Materials

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In response to the growing demand for high-strength and high-toughness materials in industries such as aerospace and automotive, there is a need for metal matrix composites (MMCs) that can simultaneously increase strength and toughness. The mechanical properties of MMCs depend not only on the content of reinforcing elements, but also on the architecture of the composite (shape, size, and spatial distribution). This paper focuses on the design configurations of MMCs, which include both the configurations resulting from the reinforcements and the inherent heterogeneity of the matrix itself. Such high-performance MMCs exhibit excellent mechanical properties, such as high strength, plasticity, and fracture toughness. These properties, which are not present in conventional homogeneous materials, are mainly due to the synergistic effects resulting from the interactions between the internal components, including stress–strain gradients, geometrically necessary dislocations, and unique interfacial behavior. Among them, aluminum matrix composites (AMCs) are of particular importance due to their potential for weight reduction and performance enhancement in aerospace, electronics, and electric vehicles. However, the challenge lies in the inverse relationship between strength and toughness, which hinders the widespread use and large-scale development of MMCs. Composite material design plays a critical role in simultaneously improving strength and toughness. This review examines the advantages of toughness, toughness mechanisms, toughness distribution properties, and structural parameters in the development of composite structures. The development of synthetic composites with homogeneous structural designs inspired by biological composites such as bone offers insights into achieving exceptional strength and toughness in lightweight structures. In addition, understanding fracture behavior and toughness mechanisms in heterogeneous nanostructures is critical to advancing the field of metal matrix composites. The future development direction of architectural composites and the design of the reinforcement and toughness of metal matrix composites based on energy dissipation theory are also proposed. In conclusion, the design of composite architectures holds enormous potential for the development of composites with excellent strength and toughness to meet the requirements of lightweight structures in various industries.

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Numerical study on supply parameters’ influence on ventilation performance of a personalized air conditioning system for sleeping environments

Mei

Zhuang

et al. 2022

J Therm Anal Calorim

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Numerical simulation and experimental validation of the ventilation system performance in a heated room

Cited by 9 publications

References 22 publications

Modelling heat transfer and fluid flow in a ship engine room using CFD analysis to evaluate and improve ventilation

Modelling heat transfer and fluid flow in a ship engine room using CFD analysis to evaluate and improve ventilation

Reviewing the Integrated Design Approach for Augmenting Strength and Toughness at Macro- and Micro-Scale in High-Performance Advanced Composites

Numerical study on supply parameters’ influence on ventilation performance of a personalized air conditioning system for sleeping environments

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