Huzaifa, Abdul Malik 
ORCID: https://orcid.org/0000-0002-0269-7089
(2021)
System-Level Ventilation Considerations for Thermal Risk Assessment of Aircraft Systems in Conceptual Design.
Masters thesis, Concordia University.
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Abstract
The aviation industry is moving towards an environment-friendly future. Therefore, aircraft manufacturers are investigating new technologies to make future aircraft more efficient while striving at the same time to reduce development time and cost. These new technologies, such as more electric or hybrid-electric aircraft, require novel design tools to improve different aspects of aircraft design. One important aspect is the thermal analysis for aircraft systems, usually implemented during later stages as they require detailed information. The late consideration of thermal aspects can lead to delays due to redesign. With the recently developed Thermal Risk Assessment (TRA) approach, thermal architectures for systems can be defined in conceptual design. This thesis contributes to developing these conceptual thermal design tools by improving the TRA. The focus of this thesis is on system-level ventilation aspects; a so-called mainstream flow analysis is introduced. This analysis investigates the relationship between the location of the aircraft systems within equipment bays and the characteristics of the ventilation sources. New dimensionless numbers (DN) are defined to capture the effects of the mainstream flow. The development of the DN, their integration, and validation into the TRA is performed through several case studies using computational fluid dynamics (CFD). As a result, this new system-level ventilation analysis is introduced successfully into the TRA. The improved TRA shows satisfactory results for real-world aircraft equipment bays. As the analysis is based on DN, which is much faster than conventional CFD analysis and requires fewer inputs, suitable cooling strategies can now be developed during the conceptual design phase. In this way, thermal analyses can be integrated into a multidisciplinary design analysis and optimization framework, helping aircraft manufacturers develop more mature concepts with fewer iterations, particularly important for future unconventional, more electric, hybrid-electric, or all-electric aircraft configurations.
| Divisions: | Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical, Industrial and Aerospace Engineering |
|---|---|
| Item Type: | Thesis (Masters) |
| Authors: | Huzaifa, Abdul Malik |
| Institution: | Concordia University |
| Degree Name: | M.A. Sc. |
| Program: | Mechanical Engineering |
| Date: | 30 June 2021 |
| Thesis Supervisor(s): | Liscouet-Hanke, Susan |
| Keywords: | Aircraft Design, Conceptual Design, Aircraft Systems, Aircraft System Architecture, Design Space Exploration, More Electric Aircraft, All Electric Aircraft, Thermal Engineering, Dimensionless Analysis, Thermal Management, Heat Transfer, Ventilation, HVAC, CFD, Thermal Risk Assessment, Thermal Simulations, Fluid Mechanics, Thermal Modelling |
| ID Code: | 988556 |
| Deposited By: | ABDUL MALIK HUZAIFA |
| Deposited On: | 29 Nov 2021 16:51 |
| Last Modified: | 29 Nov 2021 16:51 |
| Related URLs: |
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