Gear train for a rotary screw compressor

ME 3201 Machine Design  ·  ANSYS Workbench 2021 R2, Autodesk Inventor, SolidWorks

Designed and analysed the gear train driving a rotary screw compressor, from ratio selection and tooth geometry through to stress checks on the loaded members.

Belt drive for the starter motor of a car engine

ME 3202 Machine Design Sessional  ·  ANSYS Workbench 2021 R2, SolidWorks

Sized a belt drive for a starter motor, covering pulley geometry, belt selection, tension and power transmission, with CAD and FEA support.

With Jubaida Hossain Basoti, Eyaman Islam and Rakibul Hasan Shawon. Supervised by Mr. Nasim Mia, Lecturer, Department of Mechanical and Production Engineering.

Real-time water quality monitoring system

ME 3110 Instrumentation & Measurement Sessional  ·  Arduino IDE, SolidWorks

Built an Arduino Uno system with pH, turbidity, TDS and temperature sensors to judge water safety for drinking, agriculture and environmental use. The build handled automated data collection, wireless monitoring and on-screen results.

First place by audience choice at Mechanical Project Showcasing, Fall 2023.

Industrial attachment at BITAC

Attachment Training Programme  ·  Bangladesh Industrial Technical Assistance Centre

Hands-on training in heat treatment, CNC machining, lathe operation, moulding and casting, which built up a working picture of both traditional and advanced manufacturing processes. Served as team leader for the programme.

50 kWp grid-connected solar PV plant with net metering

ME 4201 Power Plant Engineering  ·  NREL System Advisor Model, Global Solar Atlas, SREDA Net Metering Calculator

Designed a ground-mounted 50 kWp solar plant for a mixed college, shop and household load in Brahmanbaria, from the hourly demand profile and solar resource assessment through to module and inverter sizing, string layout and grid interconnection. Annual yield and system losses were simulated in SAM; net metering savings, payback and avoided emissions were worked out against the SREDA 2025 guideline.

LabVIEW instrument for heat, vibration and flow experiments

ME 4205 Mechatronics  ·  LabVIEW

Built one LabVIEW program covering three experiments: sensible heat exchange with absorbed and released indicators, two-signal vibration analysis with FFT and power spectral density, and pipe flow with Reynolds-based laminar, transitional and turbulent classification. The flow panel flags results above Re 25000, where the laminar solution no longer holds.

Supervised by Dr. Qazi Talal, Assistant Professor, Department of Mechanical and Production Engineering.

Thermal energy storage · Numerical validation

Modelling solid–liquid phase change for thermal energy storage

Research focus: The thermal behaviour of phase change materials during charging and discharging, and the effect of model parameters on heat transfer.

• Approach: CFD modelling of charging and discharging, with parametric analysis of heat transfer.
• Validation: Comparison of the predicted liquid fraction over time with Alnakeeb et al. [1].
• Related benchmark: Consecutive charging and discharging with modified longitudinal fins [2].

Building energy · Numerical validation

Solid–solid phase change materials in building plaster

Research focus: The thermal response and energy-saving potential of plaster containing solid–solid phase change materials.

• Approach: Heat transfer simulations of composite PCM-loaded plaster under varying boundary conditions.
• Validation: Comparison of the predicted temperature history with the study by Farulla et al. [3].

Multiphase flow · Work in progress · ANSYS Fluent & OpenFOAM

Free-falling droplets and freezing

Research focus: Droplet deformation and heat transfer during free fall, impact and freezing.

• Approach: Volume of Fluid simulations to track droplet shape and investigate thermal behaviour.
• Reference studies: Falling-droplet deformation [4], paired-droplet impact [5], and impact with freezing [6].

Falling-droplet deformation and collision

This figure compares my numerical results with Two-dimensional analogies to the deformation characteristics of a falling droplet and its collision by A. H. Rafi, M. R. Haque and D. H. Ahmed (2022) [4]. The comparison is used to assess the simulation's representation of droplet deformation and collision behaviour.

Simultaneous droplet-pair impact

This figure compares my numerical results with Simultaneous impact of droplet pairs on solid surfaces by A. Goswami and Y. Hardalupas (2023) [5]. The reference study provides a benchmark for assessing droplet-pair impact and the resulting deformation on a solid surface.

Thermal energy storage · Numerical validation

Axisymmetric PCM melting: validation against Al Siyabi et al.

Research focus: The thermal behaviour of phase change materials during charging and discharging, and the effect of model parameters on heat transfer.

• Approach: Transient CFD simulation using a 2D axisymmetric domain, the solidification and melting model, and the Boussinesq approximation in ANSYS Fluent.
• Benchmark comparison: Comparison of the volume-averaged PCM liquid fraction over time with Figure 4 of Al Siyabi et al. [7].
• Current results: The available simulation results show a similar melting trend to the published curve. Assessment of the complete melting history and numerical sensitivity remains ongoing.

Undergraduate thesis · Experimental research · Completed July 2026

Water-lily natural fibre and epoxy composites

Thesis: Experimental Characterization of Nymphaea Rubra (Water Lily) Natural Fiber and Its Epoxy Composite through Mechanical Analysis.

AUST · Supervisor: Dr. Fazle Rabbi · Three-member research team

Research focus: Water-lily natural fibre as a sustainable reinforcement for epoxy-based polymer composites.

• Extraction: Compared 48-hour and 72-hour natural retting, with and without 6% NaOH treatment.
• Methods: Single-fibre tensile testing, hand lay-up fabrication, laser-cut specimens, and tensile, flexural, Charpy impact and Brinell hardness tests, with SEM examination.
• Reported results: Identified 48-hour natural retting as the most effective extraction condition among those studied. Average composite tensile strength was 25.5 ± 2 MPa, elastic modulus 3.2 ± 0.29 GPa, and flexural strength 22 ± 5.5 MPa.