Mohd Al-Hafiz Mohd Nawi
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Preferred name
Mohd Al-Hafiz Mohd Nawi
Official Name
Mohd Al-Hafiz , Mohd Nawi
Alternative Name
Hafiz, M. A.
Nawi, M. A.H.M.
Nawi, M. A.M.
Nawi, Mohd Al Hafiz Mohd
Nawi, M. H.
Main Affiliation
Scopus Author ID
57195980205
Researcher ID
IOU-7551-2023

Research Output
Now showing 1 - 3 of 3
  • Publication
    Multi-stage swirling fluidized bed: part 2 - the velocity distribution
    (Semarak Ilmu Publishing, 2023)
    Muhamad Silmie Mohamad Shabri
    ;
    Mohd Al-Hafiz Mohd Nawi
    ;
    Mohd Shahir Kasim
    ;
    Muhammad Syamil Zakaria
    ;
    Masniezam Ahmad
    ;
    Mohammad Azrul Rizal Alias
    ;
    Raja Muhammad Zulkifli Raja Ibrahim
    This task involved numerical analysis study to investigate the air flow distribution affected by blade distributor arrangement of Multi-Stage Swirling Fluidized Bed (SFB). The current systems is in difference with conventional fluidization systems where the current systems will impart swirling motion to the particle. This study focused on the velocity distribution on blade distributor whereby the influence of blades number (30, 45, and 60) via horizontal inclination angle (10°, 12°, and 15) through multi-stage distributor arrangements, therefore a separate velocity component would be obtained. The numerical simulation, was utilised to compute and analyse the performance outcomes of three velocity components: tangential, axial and radial velocity in an Multi-Stage SFB. From the results of the study, the fluidization systems with high blades number of 60 and blades angle of 15° has shown a significant air flow distribution at both stages. Thus, the major velocity component such as velocity magnitude and tangential velocity in the Multi-Stage SFB have shown a retention uniformity along the radius blade distributor and the air flow inside the system rise more than 40 m/s.
      9  2
  • Publication
    Simulation study on structure bumper beam using finite element analysis
    (Universiti Malaysia Perlis (UniMAP), 2022-03)
    A. Hambali
    ;
    M. S Kasim
    ;
    N. H. N. Husshini
    ;
    S. Muhammad Nasiruddin
    ;
    Mohd Al-Hafiz Mohd Nawi
    ;
    J. Rosidah
    ;
    S. B Mohamed
    ;
    Teruaki Ito
    One of the main parts of the automotive bumper system is the bumper beam. A bumper beam is a safety feature of a car where it functions to absorb impact energy during a collision. It is important to improve the bumper beam design to improve vehicle safety. The objective of the paper is to investigate the most suitable bumper beam cross-section at the conceptual design stage using finite element analysis (FEA). There are five (5) conceptual designs with different types of cross-sections that have been proposed to evaluate its energy absorption analysis through ANSYS LS DYNA software. The indicators considered in evaluating and determining the best design are energy absorption, specific energy absorption (SEA) and deformation of the bumper beam after crashed. For the selection process, six bumper beam structures have been considered. Analytical hierarchy process and Technique for Order of Preference by Similarity to Ideal Solution (AHP-TOPSIS) method was employed to determine the best design through identified product design specification (PDS) of frontal low-speed impact low carbon steel bumper beam. Through the seven elements identified in product design specification (PDS) using the AHP-TOPSIS method, conceptual design 4 (CD-4) bumper beam was the best bumper beam design with a Relative closeness coefficient (Ci) value of 0.564.
      15  2
  • Publication
    Multi-stage swirling fluidized bed: part 1 - numerical analysis procedure
    (Semarak Ilmu Publishing, 2023)
    Muhamad Silmie Mohamad Shabri
    ;
    Mohd Al-Hafiz Mohd Nawi
    ;
    Mohd Shahir Kasim
    ;
    Khor Chu Yee
    ;
    Mohd Uzair Mohd Rosli
    ;
    Mohammad Azrul Rizal Alias
    ;
    Raja Muhammad Zulkifli Raja Ibrahim
    Swirling Fluidized Bed (SFB) is a system that possess a plenum chamber and distributor air gap which leading up to dispersion of the airflow to the bed. The current SFB is in contrast with conventional fluidization systems whereby the effect of multi-stage through blades inclination angle (15°) and number of blades (60) was carried out. The simulation was used to compute and assess the performance outcomes of velocity distribution in a SFB. Therefore, the present study focuses on the numerical analysis procedure on the air flow distribution impacted by annular blade distributor arrangement in a Multi-stage SFB via ANSYS Fluent before a detailed study on selected variable would be carried out. As a consequence, the findings of the primary study that have been conducted are in line with expectations formed by earlier research.
      1  10