HMT project proposal.pptx

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This document summarizes a project to analyze microcontroller cooling using jet impingement. It will involve modeling an existing microcontroller to determine current overheating issues. A cooling solution will then be designed using CFD software and prototyped, exploring either external jet impingement from the car's radiator or internal impingement using a vibrating membrane. The goal is to efficiently cool the microcontroller below maximum temperatures while minimizing weight and power demands for an autonomous vehicle.

Engineering

Thermodynamic analysis of
microcontroller cooling using Jet Impingement
BY: ANANAY JOSHI (2K20/ME/29)
ANANT VOHRA (2K20/ME/32)
ANSHUMAN PIYUSH (2K20/ME/39)
UNDER SUPERVISION:
PROF.(DR) RADHEY SHYAM MISHRA
EX-HOD(MECH,PIED,AUTO.)
EX-DEAN(O&EA)

Motivation
 Being a part of the collegiate Formula SAE team , Team Defianz Racing, it
was observed during the testing of our driverless vehicle that the
microprocessors were overheating and the cooling fins that the
microprocessors came with were inadequate for proper cooling. So, we
turned to cooling methods which were small in nature and highly efficient,
since keeping the weight of the car for optimal performance as well as the
energy drawn out by the cooling system should be minimal.
 It was during our research we decided to pursue an unorthodox method of
cooling microprocessors via Jet impingement.

Literature Review
 Narumanchi et al, 2005 ,Modeling Single-Phase and Boiling Liquid Jet Impingement Cooling in Power Electronics
 Kim et al, 2016, Evaluation of cooling performance of impinging jet array over various dimpled surfaces
 Zhou et al, 2016, Modular jet impingement assemblies with passive and active flow control for electronics cooling
 Way et al, 2014, Traction Drive Inverter Cooling with Submerged Liquid Jet Impingement on Microfinned
Enhanced Surfaces
 Montofarno et al, 2014, CPV cells cooling system based on submerged jet impingement: CFD modeling and
experimental validation
 Tejero et al, 2016, Unsteady conjugate heat transfer analysis for impinging jet cooling
 Morrison et al ,2016, Regeneratively cooled transition duct with transversely buffered impingement nozzles
 Georgiou et al 2015, Large Eddy Simulation of a cooling impinging jet to a turbulent crossflow
 Mesahly et al, 2015, Thermal performance of plate fin heat sink cooled by air slot impinging jet with different
cross-sectional area
 Naderipour, S et al , 2016, Mixed convection cooling of a cylinder using slot jet impingement at different
circumferential angles

Initial approach
 The initial approach will be to take a standard microcontroller available and
then prepare its CAD model.
 After that, testing of the surface temperature of the fins using a heat gun will
be conducted to know the extent to which the microcontroller is overheating.
 Following this, and taking the considerations from the Driverless division, a
cooling solution will be designed so as to overclock the CPU in such a way that
the temperatures are below maximum.
 The proposed cooling solution will be designed in Ansys and Pointwise after
adequate literature review and testing following which a prototype will be
manufactured to corroborate CFD tests.

 The proposed solution would be designed while keeping in mind two different
design philosophies,
1) External jet impingement
2) Internal jet impingement
 The external method will be explored by having a small jet of air flowing from
the radiator of the car at extremely high velocity for jet impingement
 The internal method will explore a vibrating membrane that creates a pressure
loss, leading to jet impingement. The membrane will be excited via small
solenoids to a very high frequency .

This document describes a computational fluid dynamics (CFD) analysis of jet impingement cooling for a microcontroller. It includes the objective of evaluating the thermal performance of the microcontroller with and without jet impingement under different operating conditions. It presents the CAD model, mesh generation, validation steps, and results showing temperature distribution is lower with jet impingement. References on jet impingement cooling and CFD analysis are also provided.

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HMT project proposal.pptx

1. Thermodynamic analysis of microcontroller cooling using Jet Impingement BY: ANANAY JOSHI (2K20/ME/29) ANANT VOHRA (2K20/ME/32) ANSHUMAN PIYUSH (2K20/ME/39) UNDER SUPERVISION: PROF.(DR) RADHEY SHYAM MISHRA EX-HOD(MECH,PIED,AUTO.) EX-DEAN(O&EA)

2. Motivation  Being a part of the collegiate Formula SAE team , Team Defianz Racing, it was observed during the testing of our driverless vehicle that the microprocessors were overheating and the cooling fins that the microprocessors came with were inadequate for proper cooling. So, we turned to cooling methods which were small in nature and highly efficient, since keeping the weight of the car for optimal performance as well as the energy drawn out by the cooling system should be minimal.  It was during our research we decided to pursue an unorthodox method of cooling microprocessors via Jet impingement.

3. Literature Review  Narumanchi et al, 2005 ,Modeling Single-Phase and Boiling Liquid Jet Impingement Cooling in Power Electronics  Kim et al, 2016, Evaluation of cooling performance of impinging jet array over various dimpled surfaces  Zhou et al, 2016, Modular jet impingement assemblies with passive and active flow control for electronics cooling  Way et al, 2014, Traction Drive Inverter Cooling with Submerged Liquid Jet Impingement on Microfinned Enhanced Surfaces  Montofarno et al, 2014, CPV cells cooling system based on submerged jet impingement: CFD modeling and experimental validation  Tejero et al, 2016, Unsteady conjugate heat transfer analysis for impinging jet cooling  Morrison et al ,2016, Regeneratively cooled transition duct with transversely buffered impingement nozzles  Georgiou et al 2015, Large Eddy Simulation of a cooling impinging jet to a turbulent crossflow  Mesahly et al, 2015, Thermal performance of plate fin heat sink cooled by air slot impinging jet with different cross-sectional area  Naderipour, S et al , 2016, Mixed convection cooling of a cylinder using slot jet impingement at different circumferential angles

4. Initial approach  The initial approach will be to take a standard microcontroller available and then prepare its CAD model.  After that, testing of the surface temperature of the fins using a heat gun will be conducted to know the extent to which the microcontroller is overheating.  Following this, and taking the considerations from the Driverless division, a cooling solution will be designed so as to overclock the CPU in such a way that the temperatures are below maximum.  The proposed cooling solution will be designed in Ansys and Pointwise after adequate literature review and testing following which a prototype will be manufactured to corroborate CFD tests.

5.  The proposed solution would be designed while keeping in mind two different design philosophies, 1) External jet impingement 2) Internal jet impingement  The external method will be explored by having a small jet of air flowing from the radiator of the car at extremely high velocity for jet impingement  The internal method will explore a vibrating membrane that creates a pressure loss, leading to jet impingement. The membrane will be excited via small solenoids to a very high frequency .

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HMT project proposal.pptx

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HMT project proposal.pptx