Yazar "Jundi, Ahmad" seçeneğine göre listele

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    Design and Analysis of Compound Die to Produce L-Shape Product with 3 Holes
    (International Information and Engineering Technology Association, 2024) Jundi, Ahmad; Alaiwi, Yaser
    This study focuses on the design and analysis of a compound die, essential in sheet metal processing. A product from the market, defined by specific dimensions, is selected for a detailed representation in SOLIDWORKS. The design of the die, guided by mathematical modeling, aims to optimize the thickness of each component, considering the impact of cutting forces. Executed in SOLIDWORKS, the design is then subjected to a comprehensive structural analysis using ANSYS Workbench. This phase evaluates stress levels, deformations, and safety factors. A critical element of this research is the comparison between AISI D2 and AISI O1 tool steels, assessing their effectiveness in die construction. Specifically, the analysis focuses on the Piercing Punch and Blanking Punch within the die, examining their performance under operational conditions. © (2024) The author. This article is published by IIETA and is licensed under the CC BY 4.0 license (http://creativecommons.org/licenses/by/4.0/).
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    Investigation of dynamic behavior and durability of double cardan drive shafts with composite materials for high-speed vehicles
    (International Information and Engineering Technology Association, 2024) Al-Ghrairi, Ahmed; Alaiwi, Yaser; Jundi, Ahmad; Mulki, Hasan; Abushammala, Omran
    This research aims to design and analyze a Double Cardan Driveshaft for high-speed vehicles using advanced computational tools and composite materials. The study employs a comprehensive methodology that combines theoretical concepts with practical design and analysis techniques. The driveshaft is designed using SOLIDWORKS software, and numerical simulations are performed using ANSYS Workbench. Modal analysis is conducted to determine the natural frequencies and mode shapes of the driveshaft, while harmonic response analysis investigates the driveshaft’s behavior under the influence of torque at high rotational speeds. The study focuses on integrating composite materials, such as carbon fibre-reinforced polymers (Vf50%) and epoxy resin-infused fabric (biaxial), to enhance the performance and durability of the driveshaft. The numerical simulations are carried out in two stages, analysing the driveshaft made of traditional steel and then incorporating composite materials. The results demonstrate that integrating composite materials significantly improves the performance of the Double Cardan Driveshaft. The optimized design with epoxy resin-infused fabric (biaxial) exhibits a 338% increase in the safety factor and a 99.6% reduction in the damage factor compared to the traditional steel design.
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    Numerical analysis and design for thermal efficiency optimization using Al2 O3 nanofluids in shell and tube heat exchangers
    (Semarak Ilmu Publishing, 2024) Abbood, Mohammed; Alaiwi, Yaser; Jundi, Ahmad
    In this study, the efficacy of aluminum oxide (Al2O3) nanofluids at a 2% concentration for enhancing heat transfer in shell and tube heat exchangers is evaluated. By employing SOLIDWORKS for the innovative design and Computational Fluid Dynamics (CFD) for simulation, an improvement in heat transfer efficiency over traditional hot water systems is identified. Emphasizing the unique properties of Al2O3 nanofluids in augmenting heat transfer rates, the role of advanced CAD and simulation tools in engineering practices is highlighted. Results confirm nanofluids' benefits in improving thermal management systems, indicating their potential to decrease energy consumption and operational costs. Furthermore, the exploration of a novel design for heat exchangers, inspired by but distinct from existing market standards, suggests new avenues for the application of nanofluids in various industrial settings, marking a step towards more energy-efficient technologies.
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    Numerical analysis for enhanced water desalination in solar stills with optimized glass cover angles
    (Penerbit Akademia Baru, 2024) Atiyah, Ayad; Alaiwi, Yaser; Radhi, Mohammed Hussein; Jundi, Ahmad
    Water scarcity is a growing global issue that necessitates improved desalination techniques. This study aims to enhance solar still efficiency for water desalination in Baghdad's climate conditions. The research focuses on identifying the optimal glass cover tilt angle to maximize water production in single-slope solar stills. A multi-software approach was implemented, using SOLIDWORKS for design, ANSYS CFD for simulations, and MATLAB for numerical analysis. The solar still's performance was tested on July 25, 2023, from 9 AM to 5 PM, with tilt angles between 25° and 40°. Results show that a 25° angle is most effective, increasing water output by 3.3% compared to other angles. This optimal angle enhances solar radiation absorption while maintaining efficient condensation. Temperature distributions and evaporation rates were also analyzed to support these findings. These results provide valuable insights for optimizing solar still designs in regions with climate conditions similar to Baghdad, contributing to the development of more efficient water desalination technologies for water-scarce areas.
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    Numerical investigation of thermal performance enhancement in a newly designed shell and tube heat exchanger using TiO2 nanofluids
    (Semarak Ilmu Publishing, 2025) Abdul Raqib, Muiz; Alaiwi, Yaser; Jundi, Ahmad
    This study investigates the use of titanium dioxide (TiO2) nanofluids to enhance the thermal performance of shell and tube heat exchangers. A comparative computational fluid dynamics (CFD) analysis is conducted using water and a 0.5% TiO2 nanofluid. The heat exchanger is modelled using computer-aided design (CAD), with dimensions closely resembling commercial units. The CFD model is validated through a grid-independence study, with a mesh of 4,112,679 elements yielding grid-independent results. The key findings show that the 0.5% TiO2 nanofluid increases the cold fluid outlet temperature by 11.44% compared to water (36.04°C vs. 33.63°C). The average heat transfer coefficient is enhanced by 12.3% when using the nanofluid. The CFD results are consistent with experimental data, with a maximum deviation of 4.2% in the outlet temperatures. This study demonstrates the successful integration of TiO2 nanofluids with an optimized shell and tube heat exchanger design. The novelty lies in the application of nanofluids to improve the thermal performance of industrial heat exchangers. The presented methodology, combining CAD modelling and CFD analysis, provides a foundation for further optimization and experimental validation of nanofluid-enhanced heat transfer systems.