MINIATURE ENGINEERING SYSTEMS GROUP. Two-Stage CryoCooler Development for Liquid Hydrogen Systems. Miniature Engineering Systems Group Core Group of Faculty. Dr. Louis Chow Director System design, spray cooling, thermal management, thermalfluids design/experiment,thermodynamics
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MINIATURE ENGINEERING SYSTEMS GROUP
Two-Stage CryoCooler Development for Liquid Hydrogen Systems
Dr. Louis ChowDirector
System design, spray cooling, thermal management, thermalfluids design/experiment,thermodynamics
Dr. Jay KapatCo-Director
System design, design of turbo machinery, heat transfer and fluidic components, component and system testing
Dr. Quinn ChenAssociate Director for Educational Programs
Micro-fabrication and tribology, actuators
Dr. Linan An Polymer-derived ceramic micro-fabrication
Dr. Chan Ham Control, micro-satellites
Dr. K.B. Sundaram
Micro-fabrication, thin film, sensors, micro- and meso-scale motors and generators
Dr. Tom Wu RF MEMS, miniature electromagnetic devices
Dr. Neelkanth Dhere Tribological coatings, multilayer thin films, sensors
Dr. Joe Cho
Bio-MEMS, Magnetic MEMS, MOEMS, micro/nano fabrication, micro fluidics
Parts not fabricated yet…
Inlet Guide Vane
CFD SIMULATION OF IGV
Fully Structured 3D Grid
(Created in GAMBIT, 330K)
Reverse flow occurs at outlet of IGV.
(Solved by Fluent 6.0)
CFD simulation results show that pressure loss through IGV is about 5000 Pa. As expected, IGV creates an acceptable flow angle at the eye of impeller. However, certain amount of reverse flow still exists in spite of careful design. This may be eliminated by the interaction of IGV and rotor, which would be simulated in the next stage. If the flow reversal still persists, IGV design will be modified by adjusting angle of IGV vanes.
Stator Outer Diameter = 30mm
Stator Inner Diameter = 23mm
Rotor Diameter = 14mm
PM Width = 6mm
PM Height = 9mm
Motor Active Length = 70mm
Laminated low loss core
Simulated torque =0.11N.m and ripple =0.3%, when 25A phase current.
Very low harmonics in the air gap flux distribution and back EMF voltage.