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CFD Radiator Simulation

UT24 FSAE Vehicle - STAR-CCM+ Thermal Analysis & Porous Media Modeling

Project Overview

As part of the 2024 FSAE thermal management optimization, I began developing expertise in STAR-CCM+ CFD software specifically for thermal analysis. This project focused on creating a comprehensive radiator model using porous media approach, establishing the foundation for advanced thermal simulations in our electric vehicle program.

STAR-CCM+ Learning Journey

This project marked my introduction to STAR-CCM+ for thermal analysis, building upon the CFD foundations established in the cooling system optimization:

  • Software Familiarization: Learned STAR-CCM+ interface and thermal analysis workflows
  • Thermal Physics: Gained understanding of conjugate heat transfer, fluid dynamics, and porous media modeling
  • Validation Methodology: Developed approach for correlating CFD results with experimental data
  • Mesh Generation: Mastered meshing strategies for complex thermal geometries

Porous Media Radiator Model

The radiator model was developed using STAR-CCM+'s porous media capabilities to accurately represent the complex internal structure:

Geometric Representation

Modeled radiator as porous media zone representing fin and tube structures

Thermal Properties

Incorporated temperature-dependent material properties and heat transfer coefficients

Flow Characteristics

Defined pressure drop correlations and flow resistance based on experimental characterization

Simulation Results & Analysis

The CFD analysis provided detailed insights into radiator performance under various operating conditions:

Technical Implementation

The simulation setup required careful consideration of multiple physics and numerical methods:

STAR-CCM+ CFD Porous Media Modeling Conjugate Heat Transfer Thermal Validation

Impact & Future Applications

This foundational CFD work established capabilities for advanced thermal analysis:

  • Created reusable radiator model for future thermal studies
  • Developed STAR-CCM+ expertise for complex thermal simulations
  • Established validation methodology for CFD thermal predictions
  • Provided data for cooling system optimization decisions
  • Foundation for full vehicle thermal management CFD studies

Related FSAE Projects

2023 Cooling System Design
2023 Cooling System Design
2023

Initial cooling system architecture and component selection.

System DesignThermal EngineeringComponent Integration

Impact: Designed complete cooling loop for a first year electric FSAE vehicle, ensuring adequate thermal management for motor and battery systems under competition conditions

Radiator Characterization & Testing
Radiator Characterization & Testing
2024

Designed and built UTFR's first comprehensive radiator characterization test bench with custom circuit board for data acquisition, featuring 1 flow rate sensor, 2 pressure sensors, 2 water temperature sensors, 2 air temperature sensors, and hot wire anemometer - all logged directly to computer. This marked the first experimental radiator testing in team history and generated valuable thermal performance data.

Experimental DesignPCB DesignThermal TestingData AcquisitionAnalytical Validation

Impact: Established experimental thermal testing capabilities and generated comprehensive radiator performance database for CFD validation and cooling system design

2024 Cooling System Design & Thermal Optimization
2024 Cooling System Design & Thermal Optimization
2024

Advanced thermal management optimization using CFD analysis and experimental validation, building on the 2023 foundation with significantly improved routing and component placement to achieve 10% cooling efficiency improvement and 5°C temperature reduction.

CFD AnalysisThermal OptimizationExperimental ValidationANSYSHeat Transfer Engineering

Impact: Achieved 10% cooling efficiency improvement and 5°C motor temperature reduction through CFD-driven design optimization